Syntheses, weak interactions, 3D network structures and magnetic properties of two salts based on bis(maleonitriledithiolate)copper(II) anion and substituted triphenylphosphonium cation

作者：Chen Xing; Yin Wen Tao; Huang Qian; Zuo Hong Rong; Zhou Jia Rong^*; Yu Lin Liang; Ni Chun Lin; Hu Xue Lei

来源：Transition Metal Chemistry, 2010, 35(2): 143-149.

DOI：10.1007/s11243-009-9307-8

Two new salts, [BzTPP](2)[Cu(mnt)(2)] (1) and [4NO(2)BzTPP](2)[Cu(mnt)(2)] (2) (BzTPP(+) = benzyltriphenylphosphonium and mnt(2-) = maleonitriledithiolate) have been prepared and characterized by elemental analyses, UV, IR, molar conductivity and single-crystal X-ray diffraction. The single-crystal structure analysis shows that 1 crystallizes in the monoclinic space group P2(1)/n, while 2 crystallizes in the triclinic space group P-1. The effects of weak intramolecular interactions such as C-H center dot center dot center dot O, C-H center dot center dot center dot S, C-H center dot center dot center dot N, C-H center dot center dot center dot Cu hydrogen bonds and p center dot center dot center dot pi, pi center dot center dot center dot pi stacking interactions in the solids generate a 3D network structure. It is noted that the change in the molecular topology of the counteraction when the 4-substituted group in the benzyl ring is changed from H to NO2 results in differences in the crystal system, space group, weak interactions and the stacking mode of the cations and anions of 1 and 2. The magnetic susceptibilities of these salts measured in the temperature range 2.0 to 300 K show weak ferromagnetic coupling features with theta = 2.05 x 10(-2) K for 1 and 5.13 x 10(-3) K for 2.

• 单位
  中国农业大学; 武汉工程大学; 华南农业大学