Mixed-ligand complexes of copper(I) with diimines and phosphines: Effective catalysts for the coupling of phenylacetylene with halobenzene

作者：Fazal Atif; Al Fayez Sahar; Abdel Rahman Laila H; Seddigi Zaki S; Al Arfaj Abdul Rahman; El Ali Bassam; Dastageer Mohammad A; Gondal Mohammad A; Fettouhi Mohammed^*

来源：Polyhedron, 2009, 28(18): 4072-4076.

DOI：10.1016/j.poly.2009.09.021

• Copper(I) complexes
• Crystal structures
• Catalysis
• Fluorescence

New copper(I) mixed-ligand complexes 1-4 of the formula Cu(N-N)PR(3)X, where N-N = 1,10-phenanthroline (phen), 2,2'-bipyridine (bpy), 5,5'-dimethyl-2,2'-bipyridine (5,5'dimbpy) and PR(3) = tricyclohexylphosphine, tris(2-cyanoethyl)phosphine and isopropyldiphenylphosphine, have been synthesized. The complexes were characterized by EA. IR, NMR and single crystal X-ray diffraction. The solution fluorescence emission spectra were measured. The single crystal X-ray analysis showed that the copper(I) ion is four-coordinate with a distorted tetrahedral geometry. The complexes catalyze the formation of diphenylacetylene from the coupling of halobenzene with phenyl acetylene. The complex Cu(5,5'-dimethylbpy)P(cyhexyl)(3)I showed the highest catalytic activity. At room temperature all four complexes exhibit, in dichloromethane, emission maxima in the 329-344 nm range, corresponding to intra-ligand excited states.

• 出版日期2009-12-8
• 单位中国石油大学（北京）