| 19030628 |
Beheshti A, Clegg W, Nobakht V, Panahi Mehr M, Russo L: Complexes of copper (I) and silver (I) with bis (methimazolyl) borate and dihydrobis (2-mercaptothiazolyl) borate ligands. Dalton Trans. 2008 Dec 14;(46):6641-6. Epub 2008 Oct 16.
The complexes [Cu (BmMe)] 3 x 0.77C4H8O (1), [(BmMe) Ag (PPh3)] (2) and [M [kappa3-H (micro-H) B (tiaz) 2](PPh3)] (M= Cu (3), Ag (4); BmMe = bis (2-mercapto-1-methylimidazolyl) borate, H2B (tiaz) 2 = dihydrobis (2-mercaptothiazolyl) borate) have been prepared and characterised by X-ray crystallographic and spectroscopic methods. The presence of MH-B interactions in these species has been investigated using infrared spectroscopy and crystallography. In [Cu (BmMe)] 3, the triangular array of three trigonal-planar copper atoms is coordinated by three chelating and bridging (BmMe)- ligands, and has an unusual, highly unsymmetrical arrangement with one short Cu-Cu distance; this is the first structurally authenticated Bm (Me) complex with a nuclearity greater than two. In complexes 2-4, the metal atom is found in a distorted trigonal-planar geometry, bound by a terminal phosphine ligand and two sulfur atoms of a chelating ligand, supplemented by an MH-B interaction, which appears to be a common feature in the coordination chemistry of the (BmMe)- and [H2B (tiaz) 2]- ligands; compounds 1-4 are the first reported complexes of copper (I) and silver (I) with any bis (2-mercaptoimidazolyl) borate ligand or with H2B (tiaz) 2. |
82(1,1,1,2) |