Syntheses,structures and magnetic properties of two new heterometallic complexes constructed from a tripodal ligand N-(carbamoylmethyl)iminodiacetato(2-) (ADA)

摘要

Two new three-dimensional complexes formulated as [Na2M(ADA)2(H2O)4]_n (M = Ni(l),Co(2);ADA = N-(carbamoylmethyl)imino-diacetato dianion) have been synthesized under hydrothermal conditions and characterized by elemental analysis,IR,TG analysis and X-ray diffraction.Compounds 1 and 2 are isostructural and crystallize in the triclinic system,space group Pi.ADA ligand acts as chelating and bridging functions featuring a novel hexadentate binding mode.Magnetic measurements show that there is weak ferromagnetic interactions between the adjacent Ni(II) ions in 1.