Complexes of organometallic compounds. XLVI. Synthesis of adducts formed by organotin(IV) trichlorides with 1,2-bis(diphenylphosphino)ethane, and their characterization by mössbauer and infrared spectroscopy

✍ Scribed by A. Silvestri; E. Rivarola; R. Barbieri

• Book ID: 104137560
• Publisher: Elsevier Science
• Year: 1977
• Tongue: English
• Weight: 541 KB
• Volume: 23
• Category: Article
• ISSN: 0020-1693
• DOI: 10.1016/s0020-1693(00)94754-6

✦ Synopsis

Adducts between RSnC13 (R =Me, Bu", Ott', Ph) and 1,2-bis(diphenylphosphino)ethane, DPE, have I:1 composition. In Miissbauer spectroscopic experiences at variable absorber temperature the area under the resonant peaks, A, has been measured for RSnC&.DPE, R = Me, Ph; slopes of plots of In A vs. T suggest strong coupling between MGssbauer atoms, which has been interpreted in terms of solid state polymeric structures, due to DPE acting as a bridging bis-monodentate ligand. Infrared data indicate the covalency of Sri-Cl bonds. Three possible structural isomers of octahedral type are then proposed, one having trans-Pz and two cis-PZ atoms. A choice between these structures has been attempted by point-charge model calculations of partial quadrupole splittings, from AE of the already known SnC14*(AlkPhzP)z as well as of RSnC13*DPE estimator compounds.