OXY-PHOSPHORUS AND THIO-PHOSPHORUS ACID-DERIVATIVES OF TIN .2. CRYSTAL AND MOLECULAR-STRUCTURE OF (O,O'-DIETHYL DITHIOPHOSPHATO)TRIPHENYLTIN(IV) AT 138-K - UNIQUE, MONODENTATE DITHIOPHOSPHATE DERIVATIVE

(O,O‘-Diethyl dithiophosphato)triphenyltin(IV), C22H25O2S2PSn, crystallizes in the triclinic space group P$$ with a = 12.647 (7) Å,b = 9.961 (3) Å, c = 9.437 (3) Å, α = 98.59 (3)°, β = 91.51 (4)°, γ = 96.12 (4)°, V = 1173 Å3, Z = 2, and pcalcd = 1.63 g cm-3. The structure was determined by the heavy-atom technique from 4838 reflections measured at 138 ± 2 K on an automatic diffractometer using monochromated Mo Kα radiation, to a final R value of 0.039. The molecule contains a four-coordinated tin atom and a monodentate dithiophosphate ligand, an unusual example of a dithiophosphate ligand which is neither chelating nor bridging. © 1979, American Chemical Society. All rights reserved.