[Cu(H4C3N2S)Cl2]n, an Unprecedented Diazole-Bridged One-Dimensional Copper Halide: Synthesis, Structure, and Magnetic Propertie

详细信息    查看全文

• 作者：Jun-Ling Song ; Zhen-Chao Dong ; Hui-Yi Zeng ; Wen-Bo Zhou ; Takashi Naka ; Qiang Wei ; Jiang-Gao Mao ; Guo-Cong Guo ; and Jin-Shun Huang
• 刊名：Inorganic Chemistry
• 出版年：2003
• 出版时间：March 24, 2003
• 年：2003
• 卷：42
• 期：6
• 页码：2136 - 2140
• 全文大小：147K
• 年卷期：v.42,no.6(March 24, 2003)
• ISSN：1520-510X

文摘

The simultaneous desulfurization of 2-mercapto-5-methyl-1,3,4-thiadiazole with CuCl₂·2H₂O via mutual diffusion insolvents results in the isolation of air-stable dark-green crystals of [Cu(H₄C₃N₂S)Cl₂]_n (~65% yield). The structureis characterized by a unique one-dimensional copper chain bridged by diazine N-N single bonds rather thanhalogens, in sharp contrast with the halide bridging mode in conventional copper halide coordination polymers.Each Cu(II) ion shows a square planar coordination geometry featuring a strong Jahn-Teller distortion, as alsosupported by EPR data. The phase follows a Curie-Weiss paramagnetic behavior over 6-300 K. However, theintrachain antiferromagnetic interaction is evident (-2J = 21.1 cm^-1). Such magnetic coupling is related to theinterplay between the Cu(II)-d_x²-y² and diazine N-N p-orbitals.