| Abstract |
Seven new camphor palladium or platinum compounds with novel metal coordination environments were obtained by convenient choice of the experimental conditions in particular the solvent. cis-[PtCl2(PhNC10 H14O)(2)]) and [Pd(MeNNC10H14O)(2)] were structurally characterized by X-ray diffraction analysis while [\PtCl2(Me2NC10H13NSO2)\(2)], [\PdCl2(YNC10H14O)\(2)] (Y = NMe2, NPh2) and [Pd(PhNNC10H14O)(2)] were formulated by elemental analysis and spectroscopic techniques. Relevant aspects of the IR and NMR spectra of complexes [Pd(YNC10H14O)(2)] (Y = MeN, PhN) are discussed with the help of DFT calculations. Evaluation of the properties of the new complexes as catalysts for activation of 4-pentyn-1-ol towards formation of cyclization products showed that [\PdCl2(Ph2NNC10H14O)\(2)] is more efficient than [PdCl2 (Me2NNC10H14O)(2)] which is one of the more efficient camphor derived catalysts reported before. In contrast the chelate complexes [Pd(YNC10H14O)(2)] (Y = MeN, PhN) display no catalytic activity. (C)2012 Elsevier B. V. All rights reserved. |
