Crystallographic and spectroscopic investigation of the stereochemistry of [MBr(CO)(3)L-2] (M = Mn, Re) complexes: crystal and molecular structures of [MBr(CO)(3)L-2] {M = Mn, L = P(C6H4Cl-4)(3), 1/2dppe, 1/2dppf, M = Re, L = P(C6H4OMe-4)(3), 1/2dppf

摘要

A series of [MBr(CO)(3)L-2] complexes {M = Mn, L = P(C6H4Cl-4)(3) (1), P(C6H4OMe-4)(3) (2), P(CH2C6H4)(3) (3), 1/2dppe (4), 1/2dppb (5), 1/2dppf (6); M = Re, L = P(C6H4Cl-4)(3) (7), P(C6H4OMe-4)(3) (8), P(CH2C6H4)(3) (9), 1/2dppp (10), 1/2dppb (11), 1/2dppf (12)} were synthesised and characterised by elemental analysis, m.p., IR and P-31-NMR spectroscopy. With the exception of 4, all compounds are previously unreported. Five selected examples (1, 4, 6, 8, and 12) were characterised by single crystal X-ray diffraction studies. These studies confirmed fac,cis geometries for Re(I) derivatives and all complexes with bidentate ligands; the remaining Mn(I) derivatives had mer,trans geometries. (C) 2003 Elsevier B.V. All rights reserved. [References: 26]