Synthesis and topology analysis of chloridotriphenyl(triphenyl phosphate-κ O )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 chloridotriphenyltin, SnPh 3 Cl. The structure refinement reveals that this molecule 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) Å. 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 interbasin 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.