SYNTHESIS AND CHARACTERIZATION OF 5 , 5 , 7 , 12 , 12 , 14-HEXAMETHYL-1 , 4 , 8 , 11-TETRAAZACYCLOTETRADECA-7 , 14-DIENIUM DIPERCHLORATE COPPER ( II )

In this study, 5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradeca-7,14-dienium diperchlorate copper(II) complex was successfully synthesized by reacting macrocyclic tetraaza perchlorate with copper(II) acetate monohydrate in 1:1 ratio. The metal complex was characterized by variety of physicochemical techniques such as melting point, CHN elemental analysis, metal content, ultraviolet-visible spectroscopy, infrared spectroscopy, single crystal X-ray diffraction, thermogravimetric analysis, mass spectrometry and magnetic susceptibility. The infrared spectrum of complex showed four main peaks for v(N-H), ν(C-H), v(C=N) and ν(C-N) bands that appeared in the region of 3432, 2975, 1670 and 1088 cm respectively. X-ray single crystal structure showed a four-coordination geometry around the copper atom adopting a monoclinic system with a space group P/2c, unit cell dimension with a = 26.8271(17) Å, b = 7.8778(5) Å and c = 17.9908(12) Å; α = 90o, β = 99.05o and γ = 90o. The value of μeff (B.M) for copper (II) complex in the range of 1.23-2.21 B revealed that the complex was square planar geometry.

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