Pyridine-type complexes of transition-metal halides XIII - Solid state studies of copper(II) chloride and bromide complexes with methylpyridines - Part II: complexes with 2-and 4-methylpyridine and 2,4,6-collidine

This study is concerned with the reactions between copper(II) chloride and bromide with 2- and 4-methylpyridine and 2,4,6-collidine. The effects of th e methyl groups(s)' position in a series of methylpyridines on the host-gue st phenomenon in the formed copper(II) halide compounds were studied using thermogravimetry, far-infrared and electronic spectroscopy and X-ray diffra ction. Copper(LI) halide complexes with 4-methylpyridine and the copper(II) chloride complex with 2,4,6-collidine exhibit zeolite properties. The reac tion of copper(II) halides with 2-methylpyridine resulted in complex format ion but no host-guest phenomenon was detected in these complexes. No comple x formation was observed between 2,4,6-collidine and copper(II) bromide. (C ) 1999 Elsevier Science B.V. All rights reserved.