Co-ordination chemistry of 2,6-diphenylthiophenol. The syntheses and X-ray crystal structures of some molybdenum and rhodium complexes with σ- or η<sup>6</sup>-phenyl–metal interactions
作者:Peter T. Bishop、Jonathan R. Dilworth、Terrence Nicholson、Jon Zubieta
DOI:10.1039/dt9910000385
日期:——
Reaction of [MoCl2(CO)4] with the 2,6-diphenylthiophenolate anion (dpt) gives the complex [Mo(eta-6-dpt)(dpt)(CO)], with one thiol phenyl substituent eta-6-bonded to the molybdenum. Crystal data: space group P2(1)/c with a = 13.939(3), b = 10.548(3), c = 20.863(5) angstrom, beta = 106.88(1)-degrees and Z = 4. The eta-6-arene ligand is labile and is reversibly replaced by CO. Replacement of this ligand also occurs with 2,2'-bipyridyl(dipy),1,10-phenanthroline (phen), and 1,2-bis(diphenylphosphino)ethane (dppe) to give the dicarbonyl complexes [Mo(dpt)2(CO)2L] (L = bipy or phen) or the monocarbonyl complex [Mo(dpt)2(CO)(dppe)]. The X-ray crystal structure of the bipy derivative and the mechanism of its formation is discussed. Crystal data: space group P2(1)/c with a = 10.567(3), b = 22.843(5), c = 18.341(3) angstrom, beta = 105.2(2)-degrees and Z = 4. Reaction of RhCl3 with dpt gave the dinuclear species [Rh2mu-SC6H3(C6H4)-2-Ph-6}2(dpt)2(NCMe)2]. An X-ray crystal structure reveals that each bridging thiolate ligand is also sigma-bonded to rhodium [Rh-C 2.016(8) angstrom] via one of the phenyl carbons of the thiolate substituents. Crystal data: space group P2(1)/n, a = 11.991(2), b = 20.426(4), c = 15.910(4) angstrom, beta = 90.42(1) and Z = 2.