Synthesis, spectral, thermal, X-ray single crystal of new RuCl 2(dppb)diamine complexes and their application in hydrogenation of Cinnamic aldehyde

Abstract

The preparation of new three trans-[RuCl 2(dppb)(N-N)] with mixed diamine (N-N) and 1,4-bis-(diphenylphosphino)butane (dppb) ligands, starting from RuCl 2(PPh 3) 3 as precursor is presented. The complexes are characterized on the basis of elemental analysis, IR, 1H, 13C and 31P{ 1H}NMR, FAB-MS, TG/DTA and single crystal X-ray diffraction studies. Complex (2L 1) crystallizes in the monoclinic unit cells with the space group P2 1. The catalysts are evaluated for their Cinnamic aldehyde hydrogenation. The catalysts show excellent activity and selectivity for the unsaturated carbonyl compound under mild conditions. © 2012 Elsevier B.V. All rights reserved.