Abstract
Abstract Copper(II) complexes have been prepared with 2-isopropylaminopyridine N-oxide (IP) employing the perchlorate, tetrafluoroborate, nitrate, chloride and bromide salts. Preparative molar ratios of 4:1 and 2:1 ligand to copper(II) salt yielded the following unique salts: Cu(IP) 4 X 2 (X=ClO 4 − , BF 4 − ), Cu(IP) 3 (NO 3 ) 2 and Cu(IP) 2 X 2 (X=NO 3 − , Cl − and Br − ). Characterization and has been accomplished by infrared, electronic and electron spin resonance measurements primarily of the solid state. IP bonds as a monodentate ligand via its N-oxide oxygen in the first three complexes, but apparently as a bidentate ligand in the latter three. Cu(IP) 2 (NO 3 ) 2 is binuclear and anion coordination occurs in both of the nitrate complexes as well as both halogen solids.
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