Tuning structure and properties of Pd and Pt camphor derived complexes

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(PhNC10H14O)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. tion 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.