Synthesis, crystal structure, and magnetic properties of a new manganese(II) complex based on 5-bromoisophthalate and 1,2-Bis(4-pyridyl)-ethane Ligands

摘要

A new Mn(II) complex, [Mn(5-Br-ip)(bpa)]_n [5-Br-H_2ip = 5-bromoisophthalate; bpa = 1,2-bis(4-pyridyl)-ethane], has been prepared by hydrothermal reactions of Mn(II) salt and 5-bromoisophthalic acid with bpa and characterized by elemental analysis and single crystal X-ray analysis. The title complex belongs to the monoclinic system, P2/c space group, a = 10.2935(7) ?, b = 13.7759(10) ?, c = 17.0594(12) ?,β = 103.9340(10)°, F(000) = 964. R_1 = 0.0586, wR_2 = 0.1716. Complex 1 consists of a two-dimensional (2D) network containing noncentrosymmetric dinuclear Mn units as nodes, and further extends into a three-dimensional (3D) supramolecular architecture via weak interlayer BrBr interactions. Moreover, the magnetic property of the title complex was investigated.