Abstract
Abstract Copper(II) complexes of 2-butyl-, 2-isobutyl-, 2-sec-butyl- and 2-tert-butylaminopyridine N-oxide (BH, IBH, SBH and TBH, respectively) have been prepared from the following salts: tetrafluoroborate, nitrate, chloride, bromide and acetate. Solids of the general formula [Cu(LH)4](X2) (where LH[dbnd]all four ligands when X[dbnd]BF4 − and LH[dbnd]BH and SBH when X[dbnd]NO3 −) and [Cu(LH)2X2] (where LH[dbnd]IBH and TBH when X[dbnd]NO3 −). The complexes prepared with the two halide salts are polymeric and have empirical formulas of either Cu(LH)2X2 or Cu(LH)X2 or a combination of the two. With copper(II) acetate complexes of stoichiometry [CuL2] (where is L[dbnd]conjugate base of BH, IBH and SBH) were isolated and all of the complexes were characterized using spectral methods (i.e., IR, UV-Vis and ESR). All four ligands coordinate solely via the N-oxide oxygen except for their conjugate bases which also coordinate via the amine nitrogen to act as bidentate ligands. Substantial stereochemical and stoich...
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