Issue 12, 1982

New platinum hydrido acetylides. Crystal and molecular structure of [PtH{C[triple bond, length half m-dash]C–C(OH)MeEt}(PPh3)2]

Abstract

The complex trans-[PtClH(PPh3)2] reacts with monosubstituted acetylenes HC[triple bond, length half m-dash]CR (R = CH2OH, CH(OH)Me, C(OH)Me2, C(OH)MeEt, CH(OH)Ph, C6H10OH, Ph, or CMe[double bond, length half m-dash]CH2) in the presence of NEt2H to give trans-[PtH(C[triple bond, length half m-dash]CR)(PPh3)2], which have been characterized by i.r., u.v., and n.m.r. spectroscopy. An X-ray diffraction analysis was carried out on [PtH{C[triple bond, length half m-dash]C–C(OH) MeEt}(PPh3)2]. Crystals are monoclinic, space group P21/n, with unit cell dimensions a= 15.560(3), b= 26.696(5), c= 9.038(2) A, β= 98.51(2)°, Z = 4. A total of 3 855 observed reflections have been measured by single-crystal diffractometry and refined by blocked full-matrix least squares to R= 0.067. Co-ordination around platinum is distorted square planar and involves the acetylide ligand trans to hydrogen which was directly located. In some reaction conditions cationic intermediates have been demonstrated by conductivity measurements.

Article information

Article type
Paper

J. Chem. Soc., Dalton Trans., 1982, 2449-2453

New platinum hydrido acetylides. Crystal and molecular structure of [PtH{C[triple bond, length half m-dash]C–C(OH)MeEt}(PPh3)2]

A. Furlani, S. Licoccia, M. V. Russo, A. C. Villa and C. Guastini, J. Chem. Soc., Dalton Trans., 1982, 2449 DOI: 10.1039/DT9820002449

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