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Vanadium complexes of N-salicylidene-L-histidine immobilized on Al-MCM-41 designated as VO(Sal-His)/Al-MCM-41, were prepared and characterized by X-ray powder diffraction (XRD), FT-IR, nitrogen adsorption-desorption and chemical analysis techniques. VO(Sal-His)/Al-MCM-41 was found to catalyze the epoxidation of trans-2-hexen-1-ol, cinnamyl alcohol and geraniol with tert-butyl hydroperoxide (TBHP). The successful catalytic behavior of VO(Sal-His)/Al-MCM-41 with 99% conversion and excellent selectivity toward the corresponding epoxides is described herein.

Synthesis and characterization of [Cu(mb 2 en) 2 ]ClO 4 and [Cu(mb 2 en)(PPh 3 ) 2 ]BPh 4 : crystal structure of [Cu(mb 2 en) 2 ]ClO 4 , Journal of Coordination Chemistry, 61:3, 455-463 To link to this article: http://dx.Synthesis and characterization of [Cu(mb 2 en) 2 ]ClO 4 and [Cu(mb 2 en)(PPh 3 ) 2 ]BPh 4 : crystal structure of [Cu(mb 2 en) 2 ]ClO 4The ligand, N,N 0 -bis-(4-methoxy-benzylidene)-ethane-1,2-diamine (mb 2 en), and its corresponding copper(I) complexes, [Cu(mb 2 en) 2 ]ClO 4 (1), and [Cu(mb 2 en)(PPh 3 ) 2 ]BPh 4 (2), have been synthesized and characterized by CHN analyses, 1 H and 13 C-NMR, IR, and UV-Vis spectroscopies. The crystal and molecular structure of [Cu(mb 2 en) 2 ]ClO 4 (1), were determined by X-ray crystallography from a single-crystal. The coordination polyhedron about copper(I) is best described as a distorted tetrahedron. Quasi-irreversible redox behavior was observed for 1 and 2 (E 1/2 ¼ 0.55 and 0.95 V, respectively).

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