| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1308438 | Inorganica Chimica Acta | 2013 | 7 Pages |
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.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.
Graphical abstractSeven new camphor derived Pd(II) and Pt(II) complexes with different geometries (cis or trans), ligand to metal ratios (2:1 or 1:1) and coordination modes (monodentate, chelate) are obtained by tuning the experimental conditions and/or substituents in the camphorimine ligand.Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Palladium and platinum complexes with camphorimine ligands. ► New types of geometry and metal to ligand ratios. ► Structural characterization of the new complexes by X-ray analysis. ► Rationalization of spectroscopic properties by DFT calculations. ► Effects of the characteristics of the complexes in their catalytic activity on cyclization of 4-pentyn-1-ol.
