Palladium(II) and platinum(II) complexes containing hydrophilic pyridinylimine-based ligands
摘要:
Reaction of the unsymmetrical hydrophilic pyridinylimine ligands 1a-e with either PdCl2(C6H5CN)(2) or PtCl2(C6H5CN)(2) affords the square-planar d(8) dichloride complexes 2a-e and 3, respectively. Formation of these divalent species effectively stabilizes the reactive imine bond towards hydrolysis. All of the Pd(II) and Pt(II) complexes were characterized by H-1 and C-13 NMR spectroscopy and elemental analysis. The solid-state structure of 2a was established by X-ray crystallography and reveals relatively little delocalization of the imine C=N bond upon metallacycle formation. (C) 2003 Elsevier Science B.V. All rights reserved.