A linear trinuclear cobalt(II) complex with 4-(2-pyridine)-1,2,4-triazole: synthesis, structure and characterization

作者：Ding Bin^*; Yang En Cui; Zhao Xiao Jun; Wang Xiu Guang

来源：Journal of Coordination Chemistry, 2008, 61(23): 3793-3799.

DOI：10.1080/00958970802120184

• 4-(2-Pyridine)-1,2,4-triazole
• Cobalt(II)
• Electronic spectra
• Anti-ferromagnetic

The linear trinuclear cobalt(II) complex [Co(3)(pytrz)(6)(H(2)O)(6)](NO(3))(6) (1) with pytrz = 4-(2-pyridine)-1,2,4-triazole has been prepared and characterized. It crystallizes in the rhombohedral R-3 space group with Z = 3, a = 13.955(2), b = 13.955(2), c = 28.942(9)angstrom, gamma = 120 degrees, V = 4881.2(18)angstrom(3). The structure of 1 comprises the cation [Co(3)(pytrz)(6)(H(2)O)(6)](6+), in which linear trinuclear Co(II) units are bridged by six L ligands and have six aqua molecules as terminal ligands. The six free nitrates link the terminal aqua ligands through N-H center dot center dot center dot O hydrogen bonds with C(3) symmetry. 1 was characterized by FT-IR, electronic spectra and magnetic measurements. The variable-temperature magnetic measurements reveal weak anti-ferromagnetic interactions in 1.

• 出版日期2008
• 单位天津师范大学