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

For general background to the biochemistry of zinc(II) compounds, see: Bazzicalupi *et al.* (1997[@bb1]); Burley *et al.* (1990[@bb2]); Lipscomb & Straeter (1996[@bb5]); Roderick & Mathews (1993[@bb7]). For related structures, see: Dutta *et al.* (2005[@bb3]). For further synthetic details, see: Fan *et al.* (2009[@bb4]).

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

 {#sec2.1}

### Crystal data {#sec2.1.1}

\[Zn~2~(C~36~H~42~N~4~O~2~)(NO~3~)~2~\]*M* *~r~* = 817.20Monoclinic,*a* = 13.7149 (8) Å*b* = 18.0691 (10) Å*c* = 7.3523 (3) Åβ = 101.110 (5)°*V* = 1787.87 (16) Å^3^*Z* = 2Mo *K*α radiationμ = 1.40 mm^−1^*T* = 293 K0.45 × 0.25 × 0.20 mm

### Data collection {#sec2.1.2}

Oxford Diffraction Gemini R Ultra diffractometerAbsorption correction: multi-scan (*CrysAlis RED*; Oxford Diffraction, 2006[@bb6]) *T* ~min~ = 0.661, *T* ~max~ = 0.75215034 measured reflections4340 independent reflections1698 reflections with *I* \> 2σ(*I*)*R* ~int~ = 0.099

### Refinement {#sec2.1.3}

*R*\[*F* ^2^ \> 2σ(*F* ^2^)\] = 0.049*wR*(*F* ^2^) = 0.065*S* = 0.914340 reflections241 parameters357 restraintsH atoms treated by a mixture of independent and constrained refinementΔρ~max~ = 0.66 e Å^−3^Δρ~min~ = −0.45 e Å^−3^

 {#d5e457}

Data collection: *CrysAlis CCD* (Oxford Diffraction, 2006[@bb6]); cell refinement: *CrysAlis RED* (Oxford Diffraction, 2006[@bb6]); data reduction: *CrysAlis RED*; program(s) used to solve structure: *SHELXS97* (Sheldrick, 2008[@bb8]); program(s) used to refine structure: *SHELXL97* (Sheldrick, 2008[@bb8]); molecular graphics: *SHELXTL* (Sheldrick, 2008[@bb8]); software used to prepare material for publication: *SHELXTL*.

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

Crystal structure: contains datablocks I, global. DOI: [10.1107/S1600536809028530/hy2213sup1.cif](http://dx.doi.org/10.1107/S1600536809028530/hy2213sup1.cif)

Structure factors: contains datablocks I. DOI: [10.1107/S1600536809028530/hy2213Isup2.hkl](http://dx.doi.org/10.1107/S1600536809028530/hy2213Isup2.hkl)

Additional supplementary materials: [crystallographic information](http://scripts.iucr.org/cgi-bin/sendsupfiles?hy2213&file=hy2213sup0.html&mime=text/html); [3D view](http://scripts.iucr.org/cgi-bin/sendcif?hy2213sup1&Qmime=cif); [checkCIF report](http://scripts.iucr.org/cgi-bin/paper?hy2213&checkcif=yes)

Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: [HY2213](http://scripts.iucr.org/cgi-bin/sendsup?hy2213)).

We thank the National Natural Science Foundation of China (grant No. 20471014), the Program for New Century Excellent Talents in Chinese Universities (grant No. NCET-05--0320), the Fok Ying Tung Education Foundation and the Analysis and Testing Foundation of Northeast Normal University for support.

Comment
=======

Dinuclear zinc(II) compounds have attracted much interest as a result of their significance in biological systems (Burley *et al.*, 1990; Roderick & Mathews, 1993). In addition, some synthetic dinuclear zinc(II) compounds are found to have functions in dephosphorylation (Bazzicalupi *et al.*, 1997). As part of our studies in this area, the title compound, a new dinuclear zinc(II) compound, has been synthesized and its structure is reported here (Fig. 1).

In the title centrosymmetric dinuclear zinc(II) compound, each of the two Zn^II^ atoms has a distorted octahedral geometry, defined by two N atoms and two O atoms from the macrocyclic (C~36~H~42~N~4~O~2~) ligand and two O atoms from a chelating nitrate anion. The two Zn atoms are bridged by two phenolate O atoms, forming a four-membered Zn~2~O~2~ ring. The Zn---O and Zn---N distances are normal (Table 1) (Dutta *et al.*, 2005).

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

The title compound was prepared by a reaction between the macrocyclic ligand C~36~H~44~N~4~O~2~ (H~2~L), which was synthesized according to the published procedure (Fan *et al.*, 2009), and zinc nitrate. A mixture of H~2~L (0.135 g, 0.25 mmol) and Zn(NO~3~)~2~.6H~2~O (0.149 g, 0.5 mmol) in ethanol (20 ml) was heated with stirring to yield a clear pale yellow solution. Filtration and cooling to room temperature resulted in the formation of a crystalline precipitate. Recrystallization by slow evaporation of an ethanol solution of the compound resulted in well formed yellow blocks of the title compound (yield 52%).

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

N-bonded H atoms were located in a difference map and their coordinates were freely refined, with *U*~iso~ fixed. C-bonded H atoms were positioned geometrically and refined as riding atoms, with C---H = 0.93--0.96 Å and with *U*~iso~(H) = 1.2(or 1.5 for methyl)*U*~eq~(C).

Figures
=======

![Molecular structure of the title compound. Displaceement ellipsoids are draw at the 30% probability level. H atoms have been omitted for clarity.](e-65-0m985-fig1){#Fap1}

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

  ----------------------------------------- ---------------------------------------
  \[Zn~2~(C~36~H~42~N~4~O~2~)(NO~3~)~2~\]   *F*(000) = 848
  *M~r~* = 817.20                           *D*~x~ = 1.518 Mg m^−3^
  Monoclinic, *P*2~1~/*c*                   Mo *K*α radiation, λ = 0.71073 Å
  Hall symbol: -P 2ybc                      Cell parameters from 2682 reflections
  *a* = 13.7149 (8) Å                       θ = 1.9--29.2°
  *b* = 18.0691 (10) Å                      µ = 1.40 mm^−1^
  *c* = 7.3523 (3) Å                        *T* = 293 K
  β = 101.110 (5)°                          Block, yellow
  *V* = 1787.87 (16) Å^3^                   0.45 × 0.25 × 0.20 mm
  *Z* = 2                                   
  ----------------------------------------- ---------------------------------------

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

  ------------------------------------------------------------------------------ --------------------------------------
  Oxford Diffraction Gemini R Ultra diffractometer                               4340 independent reflections
  Radiation source: fine-focus sealed tube                                       1698 reflections with *I* \> 2σ(*I*)
  graphite                                                                       *R*~int~ = 0.099
  Detector resolution: 10.0 pixels mm^-1^                                        θ~max~ = 29.3°, θ~min~ = 1.9°
  ω scans                                                                        *h* = −16→17
  Absorption correction: multi-scan (*CrysAlis RED*; Oxford Diffraction, 2006)   *k* = −24→24
  *T*~min~ = 0.661, *T*~max~ = 0.752                                             *l* = −8→10
  15034 measured reflections                                                     
  ------------------------------------------------------------------------------ --------------------------------------

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

  ------------------------------------- -----------------------------------------------------------------------------------
  Refinement on *F*^2^                  Primary atom site location: structure-invariant direct methods
  Least-squares matrix: full            Secondary atom site location: difference Fourier map
  *R*\[*F*^2^ \> 2σ(*F*^2^)\] = 0.049   Hydrogen site location: inferred from neighbouring sites
  *wR*(*F*^2^) = 0.065                  H atoms treated by a mixture of independent and constrained refinement
  *S* = 0.91                            *w* = 1/\[σ^2^(*F*~o~^2^) + (0.01*P*)^2^\] where *P* = (*F*~o~^2^ + 2*F*~c~^2^)/3
  4340 reflections                      (Δ/σ)~max~ = 0.001
  241 parameters                        Δρ~max~ = 0.66 e Å^−3^
  357 restraints                        Δρ~min~ = −0.45 e Å^−3^
  ------------------------------------- -----------------------------------------------------------------------------------

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

  ------ ------------- -------------- ------------- -------------------- --
         *x*           *y*            *z*           *U*~iso~\*/*U*~eq~   
  C1     0.2727 (3)    0.6078 (2)     0.1435 (5)    0.0401 (11)          
  C2     0.1724 (3)    0.6150 (2)     0.1476 (5)    0.0486 (12)          
  H2     0.1254        0.5897         0.0621        0.058\*              
  C3     0.1424 (3)    0.6598 (2)     0.2783 (5)    0.0506 (12)          
  H3     0.0753        0.6651         0.2807        0.061\*              
  C4     0.2122 (4)    0.6965 (2)     0.4047 (5)    0.0469 (12)          
  H4     0.1920        0.7266         0.4931        0.056\*              
  C5     0.3108 (3)    0.6893 (2)     0.4022 (5)    0.0404 (11)          
  H5     0.3572        0.7141         0.4900        0.048\*              
  C6     0.3426 (3)    0.6460 (2)     0.2723 (5)    0.0332 (10)          
  C7     0.5006 (3)    0.4041 (2)     −0.4386 (4)   0.0334 (11)          
  H7A    0.4997        0.3731         −0.5467       0.040\*              
  H7B    0.5382        0.4484         −0.4537       0.040\*              
  C8     0.3954 (3)    0.4258 (2)     −0.4294 (4)   0.0296 (9)           
  C9     0.3152 (3)    0.3961 (2)     −0.5486 (5)   0.0386 (10)          
  H9     0.3268        0.3600         −0.6320       0.046\*              
  C10    0.2177 (3)    0.4175 (3)     −0.5504 (5)   0.0427 (10)          
  C11    0.2043 (3)    0.4716 (2)     −0.4249 (5)   0.0464 (11)          
  H11    0.1400        0.4879         −0.4243       0.056\*              
  C12    0.2823 (3)    0.5029 (2)     −0.2995 (5)   0.0375 (11)          
  C13    0.3800 (3)    0.4796 (2)     −0.3002 (5)   0.0322 (10)          
  C14    0.2598 (3)    0.5610 (3)     −0.1703 (5)   0.0584 (12)          
  H14A   0.2707        0.6085         −0.2244       0.070\*              
  H14B   0.1894        0.5578         −0.1684       0.070\*              
  C15    0.1319 (3)    0.3808 (3)     −0.6848 (6)   0.0525 (12)          
  C16    0.1355 (4)    0.2980 (3)     −0.6507 (6)   0.0896 (16)          
  H16A   0.1987        0.2791         −0.6668       0.134\*              
  H16B   0.0835        0.2744         −0.7372       0.134\*              
  H16C   0.1267        0.2882         −0.5266       0.134\*              
  C17    0.1414 (3)    0.3929 (2)     −0.8848 (5)   0.0749 (14)          
  H17A   0.2044        0.3745         −0.9031       0.112\*              
  H17B   0.1367        0.4448         −0.9128       0.112\*              
  H17C   0.0889        0.3670         −0.9653       0.112\*              
  C18    0.0325 (3)    0.4077 (3)     −0.6600 (6)   0.0918 (16)          
  H18A   0.0253        0.3993         −0.5344       0.138\*              
  H18B   −0.0185       0.3813         −0.7427       0.138\*              
  H18C   0.0268        0.4596         −0.6869       0.138\*              
  N1     0.3096 (3)    0.5622 (2)     0.0108 (5)    0.0479 (11)          
  N2     0.4476 (3)    0.63682 (17)   0.2695 (4)    0.0315 (9)           
  N3     0.5574 (4)    0.6847 (2)     −0.1030 (5)   0.0470 (12)          
  O1     0.6025 (2)    0.63223 (18)   −0.0177 (4)   0.0545 (8)           
  O2     0.4639 (3)    0.68288 (18)   −0.1261 (4)   0.0575 (10)          
  O3     0.5992 (3)    0.73463 (18)   −0.1672 (4)   0.0714 (11)          
  O4     0.4592 (2)    0.50597 (14)   −0.1821 (3)   0.0309 (7)           
  Zn1    0.46177 (4)   0.57671 (3)    0.03129 (6)   0.03462 (15)         
  H1N    0.296 (3)     0.5176 (13)    0.031 (5)     0.052\*              
  H2N    0.475 (3)     0.6800 (13)    0.282 (5)     0.052\*              
  ------ ------------- -------------- ------------- -------------------- --

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

  ----- ------------ ------------- ------------- -------------- ------------- --------------
        *U*^11^      *U*^22^       *U*^33^       *U*^12^        *U*^13^       *U*^23^
  C1    0.034 (3)    0.050 (3)     0.040 (2)     0.006 (2)      0.017 (2)     −0.011 (2)
  C2    0.037 (3)    0.065 (3)     0.045 (2)     0.003 (2)      0.012 (2)     −0.008 (2)
  C3    0.038 (3)    0.063 (3)     0.055 (3)     0.006 (2)      0.019 (2)     −0.010 (2)
  C4    0.046 (3)    0.052 (3)     0.045 (2)     0.011 (3)      0.014 (2)     −0.014 (2)
  C5    0.038 (3)    0.045 (3)     0.039 (2)     0.003 (2)      0.010 (2)     −0.010 (2)
  C6    0.029 (3)    0.041 (3)     0.032 (2)     0.009 (2)      0.012 (2)     0.0007 (19)
  C7    0.036 (3)    0.039 (3)     0.026 (2)     0.004 (2)      0.0078 (19)   −0.0020 (19)
  C8    0.030 (2)    0.033 (2)     0.0254 (19)   −0.003 (2)     0.0060 (18)   −0.003 (2)
  C9    0.041 (2)    0.044 (2)     0.0300 (19)   0.001 (2)      0.0052 (19)   −0.0112 (18)
  C10   0.033 (2)    0.052 (2)     0.041 (2)     −0.005 (2)     0.0022 (18)   −0.013 (2)
  C11   0.031 (2)    0.063 (3)     0.043 (2)     0.003 (2)      0.004 (2)     −0.010 (2)
  C12   0.035 (2)    0.042 (2)     0.034 (2)     0.004 (2)      0.003 (2)     −0.0104 (19)
  C13   0.031 (2)    0.038 (2)     0.028 (2)     0.001 (2)      0.007 (2)     −0.0019 (19)
  C14   0.043 (3)    0.078 (3)     0.051 (2)     0.020 (2)      0.001 (2)     −0.018 (2)
  C15   0.034 (3)    0.061 (3)     0.061 (2)     0.001 (2)      0.006 (2)     −0.019 (2)
  C16   0.083 (3)    0.087 (3)     0.088 (3)     −0.027 (3)     −0.011 (3)    −0.007 (3)
  C17   0.064 (3)    0.089 (3)     0.062 (3)     −0.011 (3)     −0.013 (2)    −0.013 (3)
  C18   0.048 (3)    0.120 (4)     0.101 (3)     −0.012 (3)     −0.002 (3)    −0.055 (3)
  N1    0.032 (2)    0.065 (3)     0.046 (2)     0.000 (3)      0.0058 (19)   −0.017 (3)
  N2    0.037 (3)    0.028 (2)     0.0292 (18)   0.004 (2)      0.0064 (18)   −0.0054 (17)
  N3    0.071 (4)    0.031 (3)     0.041 (2)     0.005 (3)      0.018 (3)     −0.005 (2)
  O1    0.058 (2)    0.046 (2)     0.062 (2)     −0.0080 (17)   0.0188 (18)   0.0047 (17)
  O2    0.055 (3)    0.063 (3)     0.0534 (19)   0.003 (2)      0.007 (2)     −0.0025 (17)
  O3    0.098 (3)    0.038 (2)     0.090 (2)     −0.012 (2)     0.046 (2)     0.0090 (19)
  O4    0.032 (2)    0.0326 (18)   0.0283 (15)   0.0044 (15)    0.0067 (14)   −0.0065 (13)
  Zn1   0.0343 (3)   0.0372 (3)    0.0319 (2)    0.0038 (4)     0.0052 (2)    −0.0047 (3)
  ----- ------------ ------------- ------------- -------------- ------------- --------------

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

  ----------------------- ------------ --------------------------- --------------
  C1---C2                 1.388 (5)    C14---H14A                  0.9700
  C1---C6                 1.393 (5)    C14---H14B                  0.9700
  C1---N1                 1.441 (5)    C15---C18                   1.490 (5)
  C2---C3                 1.378 (5)    C15---C16                   1.516 (6)
  C2---H2                 0.9300       C15---C17                   1.517 (5)
  C3---C4                 1.369 (5)    C16---H16A                  0.9600
  C3---H3                 0.9300       C16---H16B                  0.9600
  C4---C5                 1.363 (5)    C16---H16C                  0.9600
  C4---H4                 0.9300       C17---H17A                  0.9600
  C5---C6                 1.368 (5)    C17---H17B                  0.9600
  C5---H5                 0.9300       C17---H17C                  0.9600
  C6---N2                 1.453 (5)    C18---H18A                  0.9600
  C7---N2^i^              1.502 (4)    C18---H18B                  0.9600
  C7---C8                 1.510 (5)    C18---H18C                  0.9600
  C7---H7A                0.9700       Zn1---N1                    2.081 (4)
  C7---H7B                0.9700       N1---H1N                    0.845 (19)
  C8---C9                 1.376 (5)    N2---C7^i^                  1.502 (4)
  C8---C13                1.404 (5)    Zn1---N2                    2.102 (3)
  C9---C10                1.390 (5)    N2---H2N                    0.863 (19)
  C9---H9                 0.9300       N3---O3                     1.212 (4)
  C10---C11               1.380 (5)    N3---O1                     1.234 (4)
  C10---C15               1.534 (5)    N3---O2                     1.262 (5)
  C11---C12               1.391 (5)    Zn1---O1                    2.264 (3)
  C11---H11               0.9300       Zn1---O2                    2.243 (3)
  C12---C13               1.405 (5)    Zn1---O4                    2.019 (2)
  C12---C14               1.487 (5)    Zn1---O4^i^                 2.043 (2)
  C13---O4                1.341 (4)    Zn1---Zn1^i^                3.0302 (10)
  C14---N1                1.375 (4)                                
                                                                   
  C2---C1---C6            119.6 (4)    C15---C16---H16C            109.5
  C2---C1---N1            123.1 (4)    H16A---C16---H16C           109.5
  C6---C1---N1            117.3 (4)    H16B---C16---H16C           109.5
  C3---C2---C1            120.0 (4)    C15---C17---H17A            109.5
  C3---C2---H2            120.0        C15---C17---H17B            109.5
  C1---C2---H2            120.0        H17A---C17---H17B           109.5
  C4---C3---C2            119.6 (4)    C15---C17---H17C            109.5
  C4---C3---H3            120.2        H17A---C17---H17C           109.5
  C2---C3---H3            120.2        H17B---C17---H17C           109.5
  C3---C4---C5            120.7 (4)    C15---C18---H18A            109.5
  C3---C4---H4            119.7        C15---C18---H18B            109.5
  C5---C4---H4            119.7        H18A---C18---H18B           109.5
  C4---C5---C6            120.9 (4)    C15---C18---H18C            109.5
  C4---C5---H5            119.5        H18A---C18---H18C           109.5
  C6---C5---H5            119.5        H18B---C18---H18C           109.5
  C5---C6---C1            119.2 (4)    C14---N1---C1               119.5 (4)
  C5---C6---N2            121.6 (4)    C14---N1---Zn1              112.1 (3)
  C1---C6---N2            119.1 (4)    C1---N1---Zn1               110.9 (3)
  N2^i^---C7---C8         113.3 (3)    C14---N1---H1N              94 (3)
  N2^i^---C7---H7A        108.9        C1---N1---H1N               108 (3)
  C8---C7---H7A           108.9        Zn1---N1---H1N              111 (3)
  N2^i^---C7---H7B        108.9        C6---N2---C7^i^             110.9 (3)
  C8---C7---H7B           108.9        C6---N2---Zn1               108.8 (2)
  H7A---C7---H7B          107.7        C7^i^---N2---Zn1            109.3 (2)
  C9---C8---C13           119.6 (4)    C6---N2---H2N               108 (3)
  C9---C8---C7            121.6 (4)    C7^i^---N2---H2N            103 (3)
  C13---C8---C7           118.7 (4)    Zn1---N2---H2N              116 (3)
  C8---C9---C10           123.2 (4)    O3---N3---O1                122.8 (5)
  C8---C9---H9            118.4        O3---N3---O2                120.7 (5)
  C10---C9---H9           118.4        O1---N3---O2                116.4 (5)
  C11---C10---C9          116.3 (4)    N3---O1---Zn1               93.6 (3)
  C11---C10---C15         123.5 (4)    N3---O2---Zn1               93.8 (3)
  C9---C10---C15          120.2 (4)    C13---O4---Zn1              128.2 (2)
  C10---C11---C12         123.1 (4)    C13---O4---Zn1^i^           111.8 (2)
  C10---C11---H11         118.5        Zn1---O4---Zn1^i^           96.50 (9)
  C12---C11---H11         118.5        O4---Zn1---O4^i^            83.50 (9)
  C11---C12---C13         119.2 (4)    O4---Zn1---N1               89.82 (13)
  C11---C12---C14         118.9 (4)    O4^i^---Zn1---N1            111.54 (13)
  C13---C12---C14         121.9 (4)    O4---Zn1---N2               169.86 (13)
  O4---C13---C12          123.1 (4)    O4^i^---Zn1---N2            92.88 (11)
  O4---C13---C8           118.4 (4)    N1---Zn1---N2               82.68 (14)
  C12---C13---C8          118.6 (4)    O4---Zn1---O2               98.08 (11)
  N1---C14---C12          120.3 (4)    O4^i^---Zn1---O2            147.90 (13)
  N1---C14---H14A         107.2        N1---Zn1---O2               100.54 (14)
  C12---C14---H14A        107.2        N2---Zn1---O2               90.02 (12)
  N1---C14---H14B         107.2        O4---Zn1---O1               92.56 (11)
  C12---C14---H14B        107.2        O4^i^---Zn1---O1            91.78 (11)
  H14A---C14---H14B       106.9        N1---Zn1---O1               156.68 (13)
  C18---C15---C16         107.6 (4)    N2---Zn1---O1               97.03 (12)
  C18---C15---C17         108.8 (4)    O2---Zn1---O1               56.16 (11)
  C16---C15---C17         107.2 (4)    O4---Zn1---Zn1^i^           42.06 (7)
  C18---C15---C10         112.8 (4)    O4^i^---Zn1---Zn1^i^        41.45 (6)
  C16---C15---C10         108.9 (4)    N1---Zn1---Zn1^i^           104.20 (11)
  C17---C15---C10         111.4 (4)    N2---Zn1---Zn1^i^           133.61 (9)
  C15---C16---H16A        109.5        O2---Zn1---Zn1^i^           131.67 (9)
  C15---C16---H16B        109.5        O1---Zn1---Zn1^i^           92.91 (9)
  H16A---C16---H16B       109.5                                    
                                                                   
  C6---C1---C2---C3       0.1 (6)      C12---C13---O4---Zn1        4.7 (5)
  N1---C1---C2---C3       −179.9 (4)   C8---C13---O4---Zn1         −174.7 (2)
  C1---C2---C3---C4       −0.6 (6)     C12---C13---O4---Zn1^i^     122.7 (4)
  C2---C3---C4---C5       0.2 (7)      C8---C13---O4---Zn1^i^      −56.6 (4)
  C3---C4---C5---C6       0.8 (7)      C13---O4---Zn1---O4^i^      124.4 (3)
  C4---C5---C6---C1       −1.2 (6)     Zn1^i^---O4---Zn1---O4^i^   0.0
  C4---C5---C6---N2       −179.0 (4)   C13---O4---Zn1---N1         12.7 (3)
  C2---C1---C6---C5       0.8 (6)      Zn1^i^---O4---Zn1---N1      −111.71 (13)
  N1---C1---C6---C5       −179.2 (4)   C13---O4---Zn1---N2         54.8 (8)
  C2---C1---C6---N2       178.7 (4)    Zn1^i^---O4---Zn1---N2      −69.6 (7)
  N1---C1---C6---N2       −1.4 (6)     C13---O4---Zn1---O2         −87.9 (3)
  N2^i^---C7---C8---C9    −114.2 (4)   Zn1^i^---O4---Zn1---O2      147.67 (13)
  N2^i^---C7---C8---C13   68.2 (5)     C13---O4---Zn1---O1         −144.1 (3)
  C13---C8---C9---C10     0.9 (6)      Zn1^i^---O4---Zn1---O1      91.50 (12)
  C7---C8---C9---C10      −176.7 (4)   C13---O4---Zn1---Zn1^i^     124.4 (3)
  C8---C9---C10---C11     0.4 (6)      C14---N1---Zn1---O4         −41.6 (3)
  C8---C9---C10---C15     −178.8 (4)   C1---N1---Zn1---O4          −177.9 (3)
  C9---C10---C11---C12    −1.3 (6)     C14---N1---Zn1---O4^i^      −124.5 (3)
  C15---C10---C11---C12   177.8 (4)    C1---N1---Zn1---O4^i^       99.2 (3)
  C10---C11---C12---C13   0.9 (6)      C14---N1---Zn1---N2         145.2 (3)
  C10---C11---C12---C14   179.8 (4)    C1---N1---Zn1---N2          8.9 (3)
  C11---C12---C13---O4    −178.9 (3)   C14---N1---Zn1---O2         56.6 (3)
  C14---C12---C13---O4    2.2 (6)      C1---N1---Zn1---O2          −79.7 (3)
  C11---C12---C13---C8    0.5 (6)      C14---N1---Zn1---O1         54.5 (5)
  C14---C12---C13---C8    −178.4 (4)   C1---N1---Zn1---O1          −81.8 (4)
  C9---C8---C13---O4      178.1 (3)    C14---N1---Zn1---Zn1^i^     −81.5 (3)
  C7---C8---C13---O4      −4.3 (5)     C1---N1---Zn1---Zn1^i^      142.2 (2)
  C9---C8---C13---C12     −1.3 (6)     C6---N2---Zn1---O4          −51.9 (8)
  C7---C8---C13---C12     176.3 (3)    C7^i^---N2---Zn1---O4       69.3 (8)
  C11---C12---C14---N1    140.1 (4)    C6---N2---Zn1---O4^i^       −120.7 (2)
  C13---C12---C14---N1    −40.9 (7)    C7^i^---N2---Zn1---O4^i^    0.5 (2)
  C11---C10---C15---C18   −2.3 (6)     C6---N2---Zn1---N1          −9.4 (2)
  C9---C10---C15---C18    176.8 (4)    C7^i^---N2---Zn1---N1       111.8 (3)
  C11---C10---C15---C16   −121.6 (5)   C6---N2---Zn1---O2          91.3 (3)
  C9---C10---C15---C16    57.5 (5)     C7^i^---N2---Zn1---O2       −147.6 (2)
  C11---C10---C15---C17   120.4 (4)    C6---N2---Zn1---O1          147.1 (2)
  C9---C10---C15---C17    −60.5 (6)    C7^i^---N2---Zn1---O1       −91.7 (2)
  C12---C14---N1---C1     −166.4 (4)   C6---N2---Zn1---Zn1^i^      −112.0 (2)
  C12---C14---N1---Zn1    61.4 (5)     C7^i^---N2---Zn1---Zn1^i^   9.2 (3)
  C2---C1---N1---C14      40.4 (6)     N3---O2---Zn1---O4          −88.6 (2)
  C6---C1---N1---C14      −139.5 (4)   N3---O2---Zn1---O4^i^       2.0 (3)
  C2---C1---N1---Zn1      173.0 (3)    N3---O2---Zn1---N1          −180.0 (2)
  C6---C1---N1---Zn1      −6.9 (5)     N3---O2---Zn1---N2          97.5 (2)
  C5---C6---N2---C7^i^    66.3 (5)     N3---O2---Zn1---O1          −1.0 (2)
  C1---C6---N2---C7^i^    −111.5 (4)   N3---O2---Zn1---Zn1^i^      −60.0 (3)
  C5---C6---N2---Zn1      −173.5 (3)   N3---O1---Zn1---O4          99.0 (2)
  C1---C6---N2---Zn1      8.7 (4)      N3---O1---Zn1---O4^i^       −177.4 (2)
  O3---N3---O1---Zn1      −179.5 (4)   N3---O1---Zn1---N1          3.5 (5)
  O2---N3---O1---Zn1      −1.7 (4)     N3---O1---Zn1---N2          −84.3 (2)
  O3---N3---O2---Zn1      179.5 (3)    N3---O1---Zn1---O2          1.0 (2)
  O1---N3---O2---Zn1      1.7 (4)      N3---O1---Zn1---Zn1^i^      141.1 (2)
  ----------------------- ------------ --------------------------- --------------

Symmetry codes: (i) −*x*+1, −*y*+1, −*z*.

###### Selected bond lengths (Å)

  ------------- -----------
  Zn1---N1      2.081 (4)
  Zn1---N2      2.102 (3)
  Zn1---O1      2.264 (3)
  Zn1---O2      2.243 (3)
  Zn1---O4      2.019 (2)
  Zn1---O4^i^   2.043 (2)
  ------------- -----------

Symmetry code: (i) .
