2-amino-4-picoline N-Oxide complexes formed from various copper(II) salts

Abstract

Copper(II) complexes have been prepared with 2-amino-4-picoline N-oxide (2am4PicO) employing the perchlorate, tetrafluoroborate, chloride and bromide salts. Preparative molar nations of 4:1 and 2:1 ligand to Cu(II) salt yielded solids having the following empirical formulas: Cu(2am4PicO) 4X 2 (X = ClO 4, BF 4 Cu(2am4PicO) 2X 2 (X = ClO 4, Cl and Br) and Cu(2am4PicO)X 2 (X = Cl, Br). The green solids of the first group appear to be tetrahedrally distorted four-coordinate species while the latter two groups are likely dimeric solids containing some monomeric centers. 2am4PicO functions as a monodentate ligand coordinating via the N-oxide oxygen or apparently using this function to bridge two Cu(II) centers.