4546-00-3Relevant academic research and scientific papers
Investigation of Isomer Formation of Triorganotin(IV) Complexes Involving Diorganophosphino-N-phenyl(thioformamide) Ligands: The Crystal and Molecular Structure of triphenyltin, Ph3Sn
Dakternieks, Dainis,Hoskins, Bernard F.,Rolls, Carolyn L.
, p. 195 - 202 (2007/10/02)
The isomer of Ph3Sn formed depends on the method of preparation.The crystal and molecular structure of the tin(IV) complex Ph3Sn has been established by single-crystal X-ray diffraction technique.The crystals are monoclinic, space group P21/n, a 12.620(2), b 10.541(2), c 24.294(4) Angstroem, β 96.90(1) with Z 4; R and Rw were 0.031 and 0.034 respectively for 5632 unique reflections with I 3?(I).The crystals consist of discrete Ph3Sn molecules.There is a tetrahedral environment about the tin atom formed by the three phenylic carbons and a sulfur atom of the - ligand.Comparisons are made with the structurally similar compound Ph3Sn.On the basis of these comparisons and on earlier n.m.r. data, a favoured four-centered mechanism for insertion of dipolar PhNCS into the tin-phosphorus bond of Ph3SnPPh2 is inferred.Differences in reactivity of Ph2PC(S)N(H)Ph and (c-C6H11)2PC(S)N(H)Ph appear to result from electronic rather than steric effects.
