Synthesis and crystal structure of Cu(II) complex with 4-(pyridyl-2)-1,2,4-triazole

摘要

The synthesis and X-ray structure of new Cu(II) complex with 4-(pyridyl-2)-1,2,4-triazole (pytrz) are reported. The crystal structure of [Cu_3(pytrz)_8(H_2O)_4](NO_3)_6 has been determined by X-ray diffraction. Crystals are triclinic, space group P-1, and cell parameters are: a = 11.971(2), b = 13.079(3), c = 14.439(2)A, alpha = 114.03(1), beta = 97.79(1), gamma = 111.02(1), V = 1819.2(6)A, Z = 1, R_f = 0.0706. The structure consists of linear trinuclear cations with a +6 charge and six noncoordinated NO_3~- anions. The central copper(II) atom is located on an inversion centre and is coordinated by six nitrogen atoms of pyrtrz molecules bridging via the nitrogen atoms in the N_1, N_2 positions. Each external copper(II) atom completes its coordination sphere with one monodentrate pytrz via the nitrogen atom in the N_1 position and two coordinated water molecules.