Diphenylantimony(III) diphenylphosphinate and diphenylmonothiophosphinate: synthesis, spectra and crystal structure

Organoantimony(V) Phosphinates, Phosphonates, and Seleninates

“…Each phosphonate has one free OH group, which remains non‐coordinating. The average Sb–O bond lengths in 2 and 3 are 2.078(2) Å and 2.058(2) Å, respectively, which are close to the value for Sb V –O bonds21 and slightly less when compared to the reported Sb III diphenylphosphinates and phosphonates, respectively 13b…”

Synthesis and characterization of the new ambidentate O-cholesteryl-O-phenyl phosphorothioate ligand and its organoarsenic derivatives of phenoxarsin-10-yl and phenothiarsin-10-yl phosphorothioate

“…An anisobidentate behavior (chelate or bridging) of the ligand can not be proposed because that behavior implies a shift to lower wave numbers of the m(P‫ס‬O) band, owing to the delocalization of the p-electron pair. This feature was observed in Ph 2 Sb[OSPPh 2 ] [21], where the assigned m(P‫ס‬O) vibration in the IR spectrum presents an intermediate value between those expected for the single and double phosphorus-oxygen bond.…”

The Chemistry of Organo-Arsenic, Antimony and Bismuth Compounds: An Overview

“…[Ph 2 Sb(S 2 PPh 2 )] [117] is a weak dimer containing eight membered Sb 4 S4P 2 rings, in which transannular Sb...S interactions raise the antimony coordination to five leading to a distorted square pyramidal geometry. The X-ray structures of [Ph 2 Sb{0(X)PPh 2 }] (X = O, S) [120] have revealed that diphenylantimony(III) groups are linked into chains by symmetrically bonded bridging phosphinate/thiophosphinate groups. In these molecules the primary bonding is through the oxygen atom rather than the sulfur.…”