Related literature {#sec1}
==================

For related literature, see: Li *et al.* (2007[@bb2]); Wu *et al.* (1997[@bb5]).

Experimental {#sec2}
============

 {#sec2.1}

### Crystal data {#sec2.1.1}

\[Cd~2~(C~17~H~6~O~9~)(C~18~H~10~N~4~)~2~(H~2~O)~2~\]·H~2~O*M* *~r~* = 1197.67Monoclinic,*a* = 15.698 (3) Å*b* = 6.7028 (13) Å*c* = 21.428 (4) Åβ = 102.45 (3)°*V* = 2201.7 (8) Å^3^*Z* = 2Mo *K*α radiationμ = 1.05 mm^−1^*T* = 293 (2) K0.27 × 0.24 × 0.21 mm

### Data collection {#sec2.1.2}

Rigaku R-AXIS RAPID diffractometerAbsorption correction: multi-scan (*ABSCOR*; Higashi, 1995[@bb1]) *T* ~min~ = 0.742, *T* ~max~ = 0.80120222 measured reflections5022 independent reflections3508 reflections with *I* \> 2σ(*I*)*R* ~int~ = 0.093

### Refinement {#sec2.1.3}

*R*\[*F* ^2^ \> 2σ(*F* ^2^)\] = 0.049*wR*(*F* ^2^) = 0.125*S* = 1.045022 reflections352 parameters6 restraintsH atoms treated by a mixture of independent and constrained refinementΔρ~max~ = 0.70 e Å^−3^Δρ~min~ = −0.84 e Å^−3^

 {#d5e791}

Data collection: *PROCESS-AUTO* (Rigaku, 1998[@bb3]); cell refinement: *PROCESS-AUTO*; data reduction: *PROCESS-AUTO*; program(s) used to solve structure: *SHELXS97* (Sheldrick, 2008[@bb4]); program(s) used to refine structure: *SHELXL97* (Sheldrick, 2008[@bb4]); molecular graphics: *SHELXTL-Plus* (Sheldrick, 2008[@bb4]); software used to prepare material for publication: *SHELXL97*.

Supplementary Material
======================

Crystal structure: contains datablocks global, I. DOI: [10.1107/S1600536808013676/rz2212sup1.cif](http://dx.doi.org/10.1107/S1600536808013676/rz2212sup1.cif)

Structure factors: contains datablocks I. DOI: [10.1107/S1600536808013676/rz2212Isup2.hkl](http://dx.doi.org/10.1107/S1600536808013676/rz2212Isup2.hkl)

Additional supplementary materials: [crystallographic information](http://scripts.iucr.org/cgi-bin/sendsupfiles?rz2212&file=rz2212sup0.html&mime=text/html); [3D view](http://scripts.iucr.org/cgi-bin/sendcif?rz2212sup1&Qmime=cif); [checkCIF report](http://scripts.iucr.org/cgi-bin/paper?rz2212&checkcif=yes)

Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: [RZ2212](http://scripts.iucr.org/cgi-bin/sendsup?rz2212)).

This work was supported by the Program for Young Academic Backbone in Heilongjiang Provincial University (No. 1152 G053) and Mudanjiang Medical University.

Comment
=======

Dipyrido\[3,2-a:2\',3\'-c\]phenazine (*L*) has been widely used to recognize the secondary structure of DNA in rutenium(II) complexes (Wu *et al.*, 1997). Recently, the *L* ligand has received intense interest in the chemistry of coordination polymers (Li *et al.*, 2007). In the present paper, we selected H~4~BPTC = 3,3\',4,4\'-benzophenone tetracarboxylic acid as a bridging ligand and *L* as a chelating ligand, generating a new cadmium(II) coordination polymer, \[Cd~2~(*L*)~2~(BPTC)(H~2~O)~2~\]^.^2H~2~O.

Selected bond lengths and angles for the title compound are given in Table 1. Each Cd^II^ atom is seven-coordinated by five O atoms from two different BPTC anions and one water molecule, and two N atoms from one chelating *L* ligand in a distorted pentagonal bipyramidal coordination geometry (Fig. 1). The BPTC anions link the Cd^II^ atoms to form a one-dimensional chain structure (Fig. 2). The *L* ligands are attached on both sides of the chain. Intermolecular O---H···O H-bonds (Table 2) and the π--π interactions (between *L* ligands of neighboring chains, with the shortest atom-to-atom distance of 3.43 (2) Å) stabilize the crystal structure.

Experimental {#experimental}
============

Dipyrido\[3,2 - a:2\',3\'-c\]-phenazine (0.5 mmol) and 3,3\',4,4\'-benzophenone tetracarboxylic acid (0.25 mmol) were mixed with an aqueous solution (12 ml) of cadmium chloride dihydrate (0.5 mmol) with stirring. The solution was heated in a 25 ml Teflon-lined reaction vessel at 390 K for 120 h and then cooled to room temperature over a period of 16 h. Colourless crystals of the title compound were collected.

Refinement {#refinement}
==========

All H atoms on C atoms were positioned geometrically (C---H = 0.93 Å) and refined as riding, with *U*~iso~(H) = 1.2*U*~eq~(C). The water H atoms were located in a difference Fourier map and refined with a distance restraint of O--H = 0.85 Å, and with *U*~iso~(H) = 1.2*U*~eq~(O).

Figures
=======

![The structure of the title compound , showing the atom-numbering scheme. Displacement ellipsoids are drawn at the 30% probability level. Symmetry codes: (i) x, y - 1, z; (ii) 0.5 - x, y, 0.5 - z.](e-64-0m810-fig1){#Fap1}

![View of the chain structure of the title compound.](e-64-0m810-fig2){#Fap2}

Crystal data {#tablewrapcrystaldatalong}
============

  ---------------------------------------------------------------- ----------------------------------------
  \[Cd~2~(C~17~H~6~O~9~)(C~18~H~10~N~4~)~2~(H~2~O~1~)~2~\]·H~2~O   *F*~000~ = 1196
  *M~r~* = 1197.67                                                 *D*~x~ = 1.807 Mg m^−3^
  Monoclinic, *P*2/*n*                                             Mo *K*α radiation λ = 0.71073 Å
  Hall symbol: -P 2yac                                             Cell parameters from 13844 reflections
  *a* = 15.698 (3) Å                                               θ = 3.0--27.5º
  *b* = 6.7028 (13) Å                                              µ = 1.05 mm^−1^
  *c* = 21.428 (4) Å                                               *T* = 293 (2) K
  β = 102.45 (3)º                                                  Block, colourless
  *V* = 2201.7 (8) Å^3^                                            0.27 × 0.24 × 0.21 mm
  *Z* = 2                                                          
  ---------------------------------------------------------------- ----------------------------------------

Data collection {#tablewrapdatacollectionlong}
===============

  ---------------------------------------------------------- --------------------------------------
  Rigaku R-AXIS RAPID diffractometer                         5022 independent reflections
  Radiation source: rotating anode                           3508 reflections with *I* \> 2σ(*I*)
  Monochromator: graphite                                    *R*~int~ = 0.093
  Detector resolution: 10.0 pixels mm^-1^                    θ~max~ = 27.5º
  *T* = 293(2) K                                             θ~min~ = 3.0º
  ω scans                                                    *h* = −20→18
  Absorption correction: multi-scan(ABSCOR; Higashi, 1995)   *k* = −8→8
  *T*~min~ = 0.742, *T*~max~ = 0.801                         *l* = −27→27
  20222 measured reflections                                 
  ---------------------------------------------------------- --------------------------------------

Refinement {#tablewraprefinementdatalong}
==========

  ---------------------------------------------------------------- ---------------------------------------------------------------------------------------
  Refinement on *F*^2^                                             Secondary atom site location: difference Fourier map
  Least-squares matrix: full                                       Hydrogen site location: inferred from neighbouring sites
  *R*\[*F*^2^ \> 2σ(*F*^2^)\] = 0.049                              H atoms treated by a mixture of independent and constrained refinement
  *wR*(*F*^2^) = 0.125                                               *w* = 1/\[σ^2^(*F*~o~^2^) + (0.0614*P*)^2^\] where *P* = (*F*~o~^2^ + 2*F*~c~^2^)/3
  *S* = 1.04                                                       (Δ/σ)~max~ \< 0.001
  5022 reflections                                                 Δρ~max~ = 0.70 e Å^−3^
  352 parameters                                                   Δρ~min~ = −0.84 e Å^−3^
  6 restraints                                                     Extinction correction: none
  Primary atom site location: structure-invariant direct methods   
  ---------------------------------------------------------------- ---------------------------------------------------------------------------------------

Special details {#specialdetails}
===============

  -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
  Geometry. All e.s.d.\'s (except the e.s.d. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell e.s.d.\'s are taken into account individually in the estimation of e.s.d.\'s in distances, angles and torsion angles; correlations between e.s.d.\'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell e.s.d.\'s is used for estimating e.s.d.\'s involving l.s. planes.
  Refinement. Refinement of *F*^2^ against ALL reflections. The weighted *R*-factor *wR* and goodness of fit *S* are based on *F*^2^, conventional *R*-factors *R* are based on *F*, with *F* set to zero for negative *F*^2^. The threshold expression of *F*^2^ \> σ(*F*^2^) is used only for calculating *R*-factors(gt) *etc*. and is not relevant to the choice of reflections for refinement. *R*-factors based on *F*^2^ are statistically about twice as large as those based on *F*, and *R*- factors based on ALL data will be even larger.
  -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å^2^) {#tablewrapcoords}
==================================================================================================

  ------ ------------- -------------- --------------- -------------------- ------------
         *x*           *y*            *z*             *U*~iso~\*/*U*~eq~   Occ. (\<1)
  C1     0.7768 (4)    0.0149 (8)     0.1740 (2)      0.0342 (12)          
  H1     0.7343        −0.0638        0.1861          0.041\*              
  C2     0.8642 (3)    −0.0462 (8)    0.1917 (3)      0.0377 (13)          
  H2     0.8794        −0.1597        0.2166          0.045\*              
  C3     0.9266 (4)    0.0645 (8)     0.1717 (3)      0.0367 (12)          
  H3     0.9848        0.0255         0.1819          0.044\*              
  C4     0.9015 (3)    0.2375 (7)     0.1356 (2)      0.0286 (11)          
  C5     0.8145 (3)    0.2937 (7)     0.1223 (2)      0.0261 (10)          
  C6     0.9661 (3)    0.3643 (8)     0.1135 (2)      0.0319 (11)          
  C7     0.9401 (4)    0.5492 (8)     0.0840 (2)      0.0339 (12)          
  C8     0.8467 (4)    0.6054 (7)     0.0703 (2)      0.0316 (12)          
  C9     0.7859 (3)    0.4772 (7)     0.0878 (2)      0.0281 (11)          
  C10    0.6728 (4)    0.6892 (8)     0.0431 (3)      0.0423 (14)          
  H10    0.6134        0.7174         0.0328          0.051\*              
  C11    0.8165 (4)    0.7825 (8)     0.0393 (3)      0.0398 (13)          
  H11    0.8559        0.8716         0.0279          0.048\*              
  C12    0.7312 (4)    0.8258 (8)     0.0259 (3)      0.0502 (17)          
  H12    0.7112        0.9446         0.0055          0.060\*              
  C13    1.0803 (4)    0.6155 (10)    0.0777 (3)      0.0455 (15)          
  C14    1.1439 (5)    0.7468 (10)    0.0625 (3)      0.0604 (19)          
  H14    1.1280        0.8737         0.0466          0.072\*              
  C15    1.2290 (5)    0.6847 (13)    0.0715 (3)      0.068 (2)            
  H15    1.2708        0.7707         0.0618          0.082\*              
  C16    1.2537 (4)    0.4954 (12)    0.0950 (3)      0.0566 (19)          
  H16    1.3116        0.4562         0.0998          0.068\*              
  C17    1.1943 (4)    0.3640 (12)    0.1113 (3)      0.0550 (17)          
  H17    1.2119        0.2383         0.1275          0.066\*              
  C18    1.1052 (4)    0.4256 (9)     0.1028 (3)      0.0395 (13)          
  C19    0.5216 (3)    0.5601 (7)     0.1603 (3)      0.0300 (11)          
  C20    0.4599 (3)    0.6828 (7)     0.1904 (2)      0.0250 (10)          
  C21    0.4935 (3)    1.0024 (7)     0.1355 (2)      0.0298 (11)          
  C22    0.4394 (3)    0.8792 (7)     0.1726 (2)      0.0228 (10)          
  C23    0.3716 (3)    0.9765 (7)     0.1933 (2)      0.0264 (10)          
  H23    0.3585        1.1084         0.1817          0.032\*              
  C24    0.3230 (3)    0.8755 (7)     0.2318 (2)      0.0270 (11)          
  C25    0.3484 (3)    0.6844 (7)     0.2525 (2)      0.0320 (12)          
  H25    0.3201        0.6192         0.2805          0.038\*              
  C26    0.4164 (3)    0.5886 (7)     0.2315 (2)      0.0311 (11)          
  H26    0.4324        0.4598         0.2454          0.037\*              
  C27    0.2500        0.9870 (11)    0.2500          0.0338 (17)          
  N1     0.7518 (3)    0.1804 (6)     0.1405 (2)      0.0292 (9)           
  N2     0.6995 (3)    0.5206 (6)     0.0737 (2)      0.0333 (10)          
  N3     0.9946 (3)    0.6766 (7)     0.0669 (2)      0.0419 (11)          
  N4     1.0483 (3)    0.2994 (7)     0.1226 (2)      0.0385 (11)          
  O1     0.5763 (2)    0.4504 (5)     0.19432 (18)    0.0386 (9)           
  O2     0.5089 (2)    0.5605 (5)     0.09996 (17)    0.0338 (8)           
  O1W    0.5801 (3)    0.2021 (6)     −0.00419 (19)   0.0457 (10)          
  HW11   0.563 (4)     0.287 (6)      −0.033 (2)      0.055\*              
  HW12   0.553 (3)     0.096 (5)      −0.016 (3)      0.055\*              
  O3     0.5736 (2)    0.9818 (6)     0.1491 (2)      0.0443 (10)          
  O4     0.2500        1.1681 (8)     0.2500          0.0448 (15)          
  O2W    0.7500        −0.3982 (12)   0.2500          0.082 (2)            
  HW22   0.708 (7)     −0.479 (19)    0.240 (8)       0.099\*              0.50
  HW21   0.764 (14)    −0.40 (2)      0.2906 (11)     0.099\*              0.50
  O5     0.4540 (3)    1.1233 (6)     0.0948 (2)      0.0506 (11)          
  Cd1    0.60585 (2)   0.27952 (5)    0.103914 (18)   0.02753 (13)         
  ------ ------------- -------------- --------------- -------------------- ------------

Atomic displacement parameters (Å^2^) {#tablewrapadps}
=====================================

  ----- -------------- -------------- ------------ -------------- -------------- --------------
        *U*^11^        *U*^22^        *U*^33^      *U*^12^        *U*^13^        *U*^23^
  C1    0.034 (3)      0.038 (3)      0.032 (3)    −0.002 (2)     0.010 (3)      0.007 (2)
  C2    0.033 (3)      0.039 (3)      0.040 (3)    0.003 (2)      0.006 (3)      0.013 (2)
  C3    0.029 (3)      0.043 (3)      0.035 (3)    0.001 (2)      0.001 (3)      0.005 (2)
  C4    0.028 (3)      0.031 (3)      0.028 (2)    −0.001 (2)     0.008 (2)      −0.004 (2)
  C5    0.025 (2)      0.030 (2)      0.026 (2)    0.000 (2)      0.011 (2)      0.002 (2)
  C6    0.024 (3)      0.043 (3)      0.030 (3)    −0.009 (2)     0.009 (2)      0.000 (2)
  C7    0.035 (3)      0.037 (3)      0.032 (3)    −0.012 (2)     0.013 (3)      −0.005 (2)
  C8    0.036 (3)      0.031 (3)      0.031 (3)    −0.009 (2)     0.014 (3)      0.000 (2)
  C9    0.030 (3)      0.025 (2)      0.031 (3)    −0.003 (2)     0.010 (2)      0.000 (2)
  C10   0.036 (3)      0.038 (3)      0.058 (4)    0.010 (2)      0.020 (3)      0.011 (3)
  C11   0.046 (3)      0.030 (3)      0.046 (3)    −0.003 (2)     0.016 (3)      0.005 (2)
  C12   0.063 (4)      0.028 (3)      0.065 (4)    0.008 (3)      0.026 (4)      0.018 (3)
  C13   0.034 (3)      0.066 (4)      0.036 (3)    −0.023 (3)     0.008 (3)      −0.008 (3)
  C14   0.051 (4)      0.073 (5)      0.061 (4)    −0.024 (4)     0.021 (4)      0.009 (3)
  C15   0.041 (4)      0.110 (6)      0.056 (4)    −0.039 (4)     0.018 (4)      −0.002 (4)
  C16   0.023 (3)      0.108 (6)      0.042 (4)    −0.019 (3)     0.013 (3)      −0.011 (4)
  C17   0.033 (3)      0.095 (5)      0.038 (3)    −0.007 (3)     0.008 (3)      −0.001 (3)
  C18   0.024 (3)      0.065 (4)      0.030 (3)    −0.010 (3)     0.008 (2)      −0.003 (3)
  C19   0.027 (3)      0.027 (2)      0.040 (3)    0.002 (2)      0.015 (3)      0.002 (2)
  C20   0.015 (2)      0.032 (3)      0.029 (2)    −0.0024 (18)   0.005 (2)      0.001 (2)
  C21   0.033 (3)      0.028 (3)      0.031 (3)    −0.005 (2)     0.013 (2)      −0.004 (2)
  C22   0.014 (2)      0.029 (2)      0.025 (2)    −0.0026 (18)   0.004 (2)      0.0002 (19)
  C23   0.023 (3)      0.028 (2)      0.030 (3)    −0.0025 (19)   0.009 (2)      0.002 (2)
  C24   0.020 (2)      0.033 (3)      0.031 (3)    −0.004 (2)     0.013 (2)      −0.002 (2)
  C25   0.032 (3)      0.033 (3)      0.035 (3)    −0.005 (2)     0.015 (2)      0.004 (2)
  C26   0.027 (3)      0.030 (2)      0.036 (3)    0.002 (2)      0.007 (2)      0.005 (2)
  C27   0.036 (4)      0.038 (4)      0.030 (4)    0.000          0.015 (4)      0.000
  N1    0.023 (2)      0.031 (2)      0.035 (2)    −0.0024 (17)   0.0090 (19)    0.0029 (18)
  N2    0.029 (2)      0.032 (2)      0.043 (3)    0.0060 (18)    0.016 (2)      0.0032 (19)
  N3    0.034 (3)      0.048 (3)      0.044 (3)    −0.016 (2)     0.010 (2)      0.000 (2)
  N4    0.029 (2)      0.052 (3)      0.034 (2)    −0.007 (2)     0.007 (2)      0.000 (2)
  O1    0.029 (2)      0.043 (2)      0.044 (2)    0.0123 (17)    0.0088 (19)    0.0045 (18)
  O2    0.038 (2)      0.0322 (18)    0.035 (2)    0.0063 (16)    0.0155 (18)    0.0007 (15)
  O1W   0.058 (3)      0.042 (2)      0.033 (2)    0.011 (2)      0.002 (2)      0.0042 (18)
  O3    0.022 (2)      0.049 (2)      0.066 (3)    −0.0033 (17)   0.020 (2)      0.006 (2)
  O4    0.051 (4)      0.032 (3)      0.062 (4)    0.000          0.035 (3)      0.000
  O2W   0.057 (6)      0.059 (5)      0.119 (7)    0.000          −0.007 (5)     0.000
  O5    0.049 (3)      0.048 (2)      0.058 (3)    −0.003 (2)     0.018 (2)      0.023 (2)
  Cd1   0.02447 (19)   0.02697 (19)   0.0338 (2)   0.00214 (15)   0.01220 (15)   0.00352 (16)
  ----- -------------- -------------- ------------ -------------- -------------- --------------

Geometric parameters (Å, °) {#tablewrapgeomlong}
===========================

  ----------------- ------------ ------------------------- -------------
  C1---N1           1.333 (6)    C17---H17                 0.9300
  C1---C2           1.403 (7)    C18---N4                  1.363 (7)
  C1---H1           0.9300       C19---O1                  1.240 (6)
  C2---C3           1.370 (7)    C19---O2                  1.265 (6)
  C2---H2           0.9300       C19---C20                 1.517 (6)
  C3---C4           1.401 (7)    C19---Cd1                 2.727 (5)
  C3---H3           0.9300       C20---C26                 1.378 (6)
  C4---C5           1.386 (7)    C20---C22                 1.389 (6)
  C4---C6           1.478 (6)    C21---O3                  1.236 (6)
  C5---N1           1.365 (6)    C21---O5                  1.252 (6)
  C5---C9           1.455 (7)    C21---C22                 1.526 (6)
  C6---N4           1.335 (7)    C21---Cd1^i^              2.744 (5)
  C6---C7           1.411 (7)    C22---C23                 1.399 (6)
  C7---N3           1.316 (6)    C23---C24                 1.411 (6)
  C7---C8           1.480 (7)    C23---H23                 0.9300
  C8---C11          1.392 (7)    C24---C25                 1.385 (7)
  C8---C9           1.395 (6)    C24---C27                 1.489 (6)
  C9---N2           1.356 (6)    C25---C26                 1.400 (6)
  C10---N2          1.328 (6)    C25---H25                 0.9300
  C10---C12         1.402 (8)    C26---H26                 0.9300
  C10---H10         0.9300       C27---O4                  1.214 (9)
  C11---C12         1.339 (9)    C27---C24^ii^             1.489 (6)
  C11---H11         0.9300       Cd1---N1                  2.352 (4)
  C12---H12         0.9300       Cd1---N2                  2.367 (4)
  C13---N3          1.376 (8)    Cd1---O1                  2.381 (4)
  C13---C18         1.405 (9)    Cd1---O2                  2.411 (3)
  C13---C14         1.420 (8)    Cd1---O1W                 2.323 (4)
  C14---C15         1.374 (10)   O1W---HW11                0.84 (4)
  C14---H14         0.9300       O1W---HW12                0.84 (4)
  C15---C16         1.389 (10)   O2W---HW22                0.85 (2)
  C15---H15         0.9300       O2W---HW21                0.85 (2)
  C16---C17         1.381 (8)    Cd1---O3^iii^             2.321 (4)
  C16---H16         0.9300       Cd1---O5^iii^             2.572 (4)
  C17---C18         1.432 (8)                              
                                                           
  N1---C1---C2      123.1 (5)    C22---C20---C19           121.9 (4)
  N1---C1---H1      118.5        O3---C21---O5             124.2 (5)
  C2---C1---H1      118.5        O3---C21---C22            117.9 (5)
  C3---C2---C1      118.7 (5)    O5---C21---C22            117.8 (5)
  C3---C2---H2      120.6        O3---C21---Cd1^i^         57.2 (3)
  C1---C2---H2      120.6        O5---C21---Cd1^i^         68.8 (3)
  C2---C3---C4      119.0 (5)    C22---C21---Cd1^i^        162.6 (3)
  C2---C3---H3      120.5        C20---C22---C23           120.1 (4)
  C4---C3---H3      120.5        C20---C22---C21           122.3 (4)
  C5---C4---C3      119.1 (4)    C23---C22---C21           117.4 (4)
  C5---C4---C6      119.4 (4)    C22---C23---C24           120.4 (4)
  C3---C4---C6      121.5 (5)    C22---C23---H23           119.8
  N1---C5---C4      121.9 (4)    C24---C23---H23           119.8
  N1---C5---C9      117.0 (4)    C25---C24---C23           118.4 (4)
  C4---C5---C9      121.1 (4)    C25---C24---C27           124.4 (4)
  N4---C6---C7      122.0 (4)    C23---C24---C27           117.1 (4)
  N4---C6---C4      118.2 (5)    C24---C25---C26           120.5 (4)
  C7---C6---C4      119.8 (4)    C24---C25---H25           119.7
  N3---C7---C6      123.5 (5)    C26---C25---H25           119.7
  N3---C7---C8      117.1 (5)    C20---C26---C25           120.8 (5)
  C6---C7---C8      119.4 (4)    C20---C26---H26           119.6
  C11---C8---C9     118.1 (5)    C25---C26---H26           119.6
  C11---C8---C7     122.2 (4)    O4---C27---C24^ii^        120.1 (3)
  C9---C8---C7      119.7 (5)    O4---C27---C24            120.1 (3)
  N2---C9---C8      121.2 (5)    C24^ii^---C27---C24       119.7 (6)
  N2---C9---C5      118.5 (4)    C1---N1---C5              118.1 (4)
  C8---C9---C5      120.2 (5)    C1---N1---Cd1             124.5 (3)
  N2---C10---C12    122.1 (5)    C5---N1---Cd1             117.2 (3)
  N2---C10---H10    119.0        C10---N2---C9             119.1 (4)
  C12---C10---H10   119.0        C10---N2---Cd1            124.5 (4)
  C12---C11---C8    120.6 (5)    C9---N2---Cd1             116.3 (3)
  C12---C11---H11   119.7        C7---N3---C13             115.5 (5)
  C8---C11---H11    119.7        C6---N4---C18             115.4 (5)
  C11---C12---C10   118.9 (5)    C19---O1---Cd1            92.2 (3)
  C11---C12---H12   120.6        C19---O2---Cd1            90.2 (3)
  C10---C12---H12   120.6        Cd1---O1W---HW11          123 (4)
  N3---C13---C18    121.0 (5)    Cd1---O1W---HW12          117 (4)
  N3---C13---C14    119.1 (6)    HW11---O1W---HW12         107 (3)
  C18---C13---C14   119.9 (6)    C21---O3---Cd1^i^         96.2 (3)
  C15---C14---C13   119.4 (7)    HW22---O2W---HW21         105 (3)
  C15---C14---H14   120.3        C21---O5---Cd1^i^         84.2 (3)
  C13---C14---H14   120.3        O3^iii^---Cd1---O1W       102.56 (15)
  C14---C15---C16   121.0 (6)    O3^iii^---Cd1---N1        84.39 (13)
  C14---C15---H15   119.5        O1W---Cd1---N1            102.54 (15)
  C16---C15---H15   119.5        O3^iii^---Cd1---N2        154.84 (14)
  C17---C16---C15   121.6 (6)    O1W---Cd1---N2            82.23 (16)
  C17---C16---H16   119.2        N1---Cd1---N2             70.49 (14)
  C15---C16---H16   119.2        O3^iii^---Cd1---O1        88.62 (13)
  C16---C17---C18   118.6 (7)    O1W---Cd1---O1            153.69 (14)
  C16---C17---H17   120.7        N1---Cd1---O1             102.20 (14)
  C18---C17---H17   120.7        N2---Cd1---O1             97.78 (14)
  N4---C18---C13    122.3 (5)    O3^iii^---Cd1---O2        119.58 (12)
  N4---C18---C17    118.0 (6)    O1W---Cd1---O2            99.59 (13)
  C13---C18---C17   119.6 (5)    N1---Cd1---O2             142.59 (13)
  O1---C19---O2     122.6 (4)    N2---Cd1---O2             83.19 (13)
  O1---C19---C20    119.8 (5)    O1---Cd1---O2             54.58 (12)
  O2---C19---C20    117.3 (4)    O3^iii^---Cd1---O5^iii^   53.13 (13)
  O1---C19---Cd1    60.7 (3)     O1W---Cd1---O5^iii^       82.76 (15)
  O2---C19---Cd1    62.2 (2)     N1---Cd1---O5^iii^        136.94 (13)
  C20---C19---Cd1   167.9 (3)    N2---Cd1---O5^iii^        151.32 (14)
  C26---C20---C22   119.5 (4)    O1---Cd1---O5^iii^        85.29 (13)
  C26---C20---C19   118.2 (4)    O2---Cd1---O5^iii^        75.40 (12)
  ----------------- ------------ ------------------------- -------------

Symmetry codes: (i) *x*, *y*+1, *z*; (ii) −*x*+1/2, *y*, −*z*+1/2; (iii) *x*, *y*−1, *z*.

Hydrogen-bond geometry (Å, °) {#tablewraphbondslong}
=============================

  ---------------------- ---------- ---------- ----------- ---------------
  *D*---H···*A*          *D*---H    H···*A*    *D*···*A*   *D*---H···*A*
  O1W---HW11···O2^iv^    0.84 (4)   1.92 (3)   2.731 (5)   163 (6)
  O1W---HW12···O5^iv^    0.84 (4)   2.23 (4)   2.892 (6)   136 (5)
  O2W---HW22···O1^iii^   0.85 (2)   2.14 (8)   2.913 (5)   152 (15)
  ---------------------- ---------- ---------- ----------- ---------------

Symmetry codes: (iv) −*x*+1, −*y*+1, −*z*; (iii) *x*, *y*−1, *z*.

###### Selected geometric parameters (Å, °)

  ------------- -----------
  Cd1---N1      2.352 (4)
  Cd1---N2      2.367 (4)
  Cd1---O1      2.381 (4)
  Cd1---O2      2.411 (3)
  Cd1---O1*W*   2.323 (4)
  Cd1---O3^i^   2.321 (4)
  Cd1---O5^i^   2.572 (4)
  ------------- -----------

  --------------------- -------------
  O3^i^---Cd1---O1*W*   102.56 (15)
  O3^i^---Cd1---N1      84.39 (13)
  O1*W*---Cd1---N1      102.54 (15)
  O3^i^---Cd1---N2      154.84 (14)
  O1*W*---Cd1---N2      82.23 (16)
  N1---Cd1---N2         70.49 (14)
  O3^i^---Cd1---O1      88.62 (13)
  O1*W*---Cd1---O1      153.69 (14)
  N1---Cd1---O1         102.20 (14)
  N2---Cd1---O1         97.78 (14)
  O3^i^---Cd1---O2      119.58 (12)
  O1*W*---Cd1---O2      99.59 (13)
  N1---Cd1---O2         142.59 (13)
  N2---Cd1---O2         83.19 (13)
  O1---Cd1---O2         54.58 (12)
  O3^i^---Cd1---O5^i^   53.13 (13)
  O1*W*---Cd1---O5^i^   82.76 (15)
  N1---Cd1---O5^i^      136.94 (13)
  N2---Cd1---O5^i^      151.32 (14)
  O1---Cd1---O5^i^      85.29 (13)
  O2---Cd1---O5^i^      75.40 (12)
  --------------------- -------------

Symmetry code: (i) .

###### Hydrogen-bond geometry (Å, °)

  *D*---H⋯*A*             *D*---H    H⋯*A*      *D*⋯*A*     *D*---H⋯*A*
  ----------------------- ---------- ---------- ----------- -------------
  O1*W*---H*W*11⋯O2^ii^   0.84 (4)   1.92 (3)   2.731 (5)   163 (6)
  O1*W*---H*W*12⋯O5^ii^   0.84 (4)   2.23 (4)   2.892 (6)   136 (5)
  O2*W*---H*W*22⋯O1^i^    0.85 (2)   2.14 (8)   2.913 (5)   152 (15)

Symmetry codes: (i) ; (ii) .
