93604-31-0Relevant academic research and scientific papers
A REMARKABLE DEPENDENCE OF CARBON MONOXIDE INSERTION INTO A PLATINUM(II)-CARBON ?-BOND ON THE NATURE OF THE COORDINATED DITERTIARY PHOSPHINE
Bennett, Martin A.,Rokicki, Andrzej
, p. C31 - C34 (1983)
The 1-cyclohexenylmethoxycarbonyl complex Pt(CO2Me)(C6H9)(dppp) (dppp = 1,3-bis(diphenylphosphino)propane, Ph2PCH2CH2CH2PPh2) undergoes irreversible insertion of CO into the Pt-C6H9 bond under ambient conditions to give Pt(CO2Me)(COC6H9)(dppp), which may contain a dihapto-acyl group; the analogous 1-cyclohexenyl complexes containing 1,2-bis(diphenylphosphino)ethane and cis-1,2-bis(diphenylphosphino)ethylene are unreactive under the same conditions.
Preparation and Spectroscopic Properties of Cyclohexyneplatinum(0) Complexes Containing Ditertiary Arylphosphines and of Their Protonation Products
Bennett, Martin A.,Rokicki, Andrzej
, p. 1307 - 1318 (2007/10/02)
Cyclohexyneplatinum(0) complexes Pt(C6H8)(P-P) and Pt(C6H8)(PMePh2)2 have been prepared by displacement of triphenylphosphine from Pt(C6H8)(PPh3)2.Like the known compound containing Ph2PCH2CH2PPh2, these complexes are readily protonated by both strong and weak acids (HY) to give η1-cyclohexen-1-yl-platinum(II) complexes PtY(C6H9)(P-P) (Y=Cl, SPh, O2CMe, CH2CN, OMe, OH).An excess of HCl rapidly cleaves the Pt-C6H9 bond giving PtCl2(P-P) complexes identical with those made from PtCl2(cycloocta-1,5-diene) and P-P.The methoxo complexes react rapidly with water to give the hydroxo complexes and with CO to give methoxycarbonyl complexes Pt(CO2Me)(C6H9)(P-P).The i.r., 1H and 31P n.m.r. spectra of the new complexes are reported and trends in the 31P chemical shifts (δP) and in the 195Pt-31P coupling constants (1JPt,P) are compared with those reported in the literature for related systems.
