Five coordination compounds of 2-methylquinoxaline with Cu(ClO4)2 or Cu(BF4)2 have been synthesized and characterized by elemental anal., elec. conductivity, IR, ESR and electronic spectra, TGA and temperature dependent (1.5-300 K) magnetic susceptibility measurements. The composition and configuration of these complexes have been proposed. A linear Cu(II)-O-Cu(II) bridged structure existed in 3 of the antiferromagnetic dimeric complexes.

Key words: INFRARED SPECTROPHOTOMETRY, ELEMENTAL ANALYSIS, COPPER COMPLEX, THERMOGRAVIMETRY, ELECTRON SPIN RESONANCE, DINUCLEAR COMPLEX, CHLORATE, MAGNETIZATION, FLUOROBORATE, QUINOXALINE P