Co(II) and Ni(II) complexes incorporating N-acetimidoylacetamidine ligand: Synthesis and structures

Abstract

Two new square planar complexes with the formula Co(L) 2 ⋅ CH 3 OH (1) and Ni(L) 2 ⋅ CH 3 OH (2) (HL = HN{C(Me)=NH} 2 = N acetimidoylacetamidine) have been synthesized by solvothermal reactions in methanol/acetonitrile. N acetimidoylacetamidine ligand was derived from the self condensation reaction of acetonitrile, and the reaction was promoted by the cooperation of M(II) (M = Co in 1 and M = Ni in 2) with diphenylcarbazide. 1 and 2 are characterized by single crystal X ray diffraction, elemental analysis and infra red spectrum. Both complexes crystallize in the monoclinic space group P2 1 /c with a = 9.329(6) Å, b = 11.494(7) Å, c = 13.040(8) Å, β = 92.945(11)°, V = 1396.3(16) Å 3 and Z = 4 for 1, and a = 9.323(4) Å, b = 11.512(5) Å, c = 13.020(6) Å, β = 92.819(7)°, V = 1395.7(10) Å 3 and Z = 4 for 2.