Copper(I) and copper(II) complexes with pyrazine-containing pyridylalkylamide ligands N-(pyridin-2-ylmethyl) pyrazine-2-carboxamide and N-(2-(pyridin-2-yl)ethyl) pyrazine-2-carboxamide

摘要

Four copper(II) complexes and one copper(I) complex with pyridine-containing pyridylalkylamide ligands N-(pyridin-2-ylmethyl)pyrazine-2-carboxamide (HL~(pz)) and N-(2-(pyridin-2-yl)ethyl)pyrazine-2-carboxamide (HL~(pz')) were synthesized and characterized. The X-ray crystal structures of [Cu_2(L~(pz)_2(4,4'-bipy)(OTf)_2] (1, OTf = trifluoromethanesulfonate, 4,4'-bipy = 4,4'-bipyridine) and [Cu(L~(pz))(py)_2]OTf-H_2O (2, py = pyridine) revealed binuclear and mononuclear molecular species, respectively, while [Cu(L~(pz))(μ_2-1,1-N_3)]_n (3), [Cu(L~(pz'))(μ_2-1,3-N_3)]_n (4), and [Cu(HL~(pz))Cl]_n (5) are coordination polymer 1-D chains in the solid state.