A new tetranuclear copper(II) complex containing decameric water clusters bridged by-OH-and pyridine-2,4, 6-tricarboxylate: synthesis and magnetic characterization

作者：Wang Liya^*; Wang Jiange; Xie Chengzhi

来源：Journal of Coordination Chemistry, 2008, 61(21): 3401-3409.

DOI：10.1080/00958970802051058

• Pyridine-2,4,6-tricarboxylic acid
• Tetranuclear copper(II)
• Magnetic
• Decameric water clusters

Using pyridine-2,4,6-tricarboxylic acid (H(3)ptc) and 2,2-bipyridine (2,2-bipy), a tetranuclear copper(II) compound [Cu-4(2,2-bipy)(4)(ptc)(2)(H2O)(2)(OH)(2)] center dot 12H(2)O (1) has been isolated under hydrothermal conditions. Variable temperature magnetic susceptibility of 1 from 2-300 K indicates anti-ferromagnetic interactions. The magnetic exchange coupling constants of J = -159.4 and J' = -18.66 cm(-1) for 1 can be obtained through fit of the magnetic data, corresponding to two kinds of bridges, hydroxyl anions (OH-) and pyridine carboxylate oxygen of ptc3-. Moreover, decameric water clusters can also be observed, which are located between these tetranuclear copper(II) entities, forming a series of intricate O-H center dot center dot center dot O hydrogen bonds and stabilizing the resulting three-dimensional (3-D) hydrogen-bonded framework structure.

• 出版日期2008
• 单位洛阳师范学院