185913-85-3Relevant academic research and scientific papers
Metal-oxygen versus metal-sulfur bonding of the ambident monothiophosphinato ligand in some triphenylmetal(IV) derivatives, Ph3M[OSPR2] (M = Ge, Sn, Pb). Crystal structures of Ph3Ge[O(S)PPh2] and [Ph2Sn{O(S)PPh2} (μ-OH)]2
Silvestru, Anca,Silvestru, Cristian,Haiduc, Ionel,Drake, John E.,Yang, Jincai,Caruso, Francesco
, p. 949 - 961 (1997)
Diorganomonothiophosphinato-triphenylmetal(IV) derivatives, Ph3M(OSPR2) (M = Ge, Sn, Pb; R = Me, Et, Ph), were prepared and investigated. The IR and multinuclear (1H, 13C, 31P) NMR spectra are discussed in relation to the M - O and/or M - S bonding of the ambident OSPR-2 ligand. The crystal and molecular structures of Ph3Ge[O(S)PPh2] (1) and [Ph2Sn{O(S)PPh2} (μ-OH)]2 (2) were determined by X-ray diffractometry. The asymmetric unit for Ph3Ge[O(S)PPh2] contains two independent molecules. The monothiophosphinato group is bonded to germanium only through oxygen (av. Ge - O 1.826, Ge ? S 3.892 A?), leading to a tetrahedral coordination around the germanium atom. The crystal of [Ph2Sn{O(S)PPh2}(μ-OH)]2 consists of dimeric units built up through Sn - O - Sn bridges involving the oxygen atom of the hydroxy groups. The monothiophosphinato group is again monodentate [Sn(1) - O(1) 2.089(3), Sn(1) ? S(1) (non-bonding) 4.164 A?] and the coordination geometry around tin is trigonal bipyramidal, with the O(1) atom of the phosphorous ligand and the O(2′) atom of a bridging hydroxy group in axial positions. Copyright
