Atoms in molecules analysis of ((Dipp)P)Ge suggests that there is a double bond between P1-Ge. Bond order can be assessed by measuring the ellipticity,  a measure of anisotropic electron density, at the bond critical point.  For example, butane, ethylene, and ethyne have a bond ellipticity of 0.01, 0.30, and 0.00 respectively, which correspond to a single, double, and a triple bond. A bond critical point between P1-Ge with ρ=0.091 and ellipticity 0.297 was observed in ((Dipp)P)Ge, consistent with a double bond. . This contrasts ρ=0.083 and ellipticity 0.064 at the bond critical point of P2-Ge in ((Dipp)P)Ge. Delocalization index (DI) was also used to predict the bond order of ((Dipp)P)Ge. DI values for P1-Ge and P2-Ge were determined to be 1.275 and 0.843, consistent with a P1-Ge double bond and Wiberg bond indices calculated.