Abstract:
Three metal-organic frameworks Co(NCS)
2(BBI)
2n(1), Ni(NCS)
2(BBI)
2n(2), Mn(NCS)
2(BBI)
2n(3) have been hydrothermally synthesized. The structures were characterized by techniques of single-crystal X-ray diffraction analysis, powder X-ray diffraction, elemental analysis, infrared spectra, revealing that the three complexes in this article are hexacoordinated octahedral molecular geometry. The transition metal forms a coordination bond with the N atoms of all ligands, and the BBI organic ligand connects Co
2+ in the front, back, left and upper directions, forming a three-dimensional network structure. In addition, magnetic studies show that the three complexes obey Curie-Weiss law in a specific temperature range, in which the complex
1 shows weak antiferromagnetism and the complexes
2,
3 show weak cis Ferromagnetic.