Synthesis and topology analysis of chlorido-triphen-yl(triphenyl phosphate-κO)tin(IV).

The title Sn(IV) complex, [Sn(C(6)H(5))(3)Cl(C(18)H(15)O(4)P)], is a formal adduct between triphenyl phosphate (PhO)(3)P=O and the stannane derivative chlorido-tri-phenyl-tin, SnPh(3)Cl. The structure refinement reveals that this mol-ecule displays the largest Sn-O bond length for compounds including the X=O→SnPh(3)Cl fragment (X = P, S, C, or V), 2.6644†(17)†à . However, an AIM topology analysis based on the wavefunction calculated from the refined X-ray structure shows the presence of a bond critical point (3,-1), lying on the inter-basin surface separating the coordinated phosphate O atom and the Sn atom. This study thus shows that an actual polar covalent bond is formed between (PhO)(3)P=O and SnPh(3)Cl moieties.