Module-Based Assembly of Copper(II) Chloranilate Compounds: Syntheses, Crystal Structures, and Magnetic Properties of {[Cu2(CA)(terpy)2][Cu(CA)2]}n
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- 作者：Mitsuhiro Kawahara ; Md. Khayrul Kabir ; Koichi Yamada ; Keiichi Adachi ; Hitoshi Kumagai ; Yasuo Narumi ; Koichi Kindo ; Susumu Kitagawa ; and Satoshi Kawata
- 刊名：Inorganic Chemistry
- 出版年：2004
- 出版时间：January 12, 2004
- 年：2004
- 卷：43
- 期：1
- 页码：92 - 100
- 全文大小：376K
- 年卷期：v.43,no.1(January 12, 2004)
- ISSN：1520-510X
文摘
Two new copper(II) compounds of chloranilate and 2,2':6',2' '-terpyridine have been synthesized, and the structureshave been solved by the single-crystal X-ray diffraction method. The crystal structure of {[Cu2(CA)(terpy)2][Cu(CA)2]}n (1), where H2CA = chloranilic acid and terpy = 2,2':6',2' '-terpyridine, consists of two modules, the dimerunit [Cu2(CA)(terpy)2]2+ and the anionic mononuclear unit [Cu(CA)2]2-, forming an alternated chain. The chain isstabilized by semicoordinating and additional but efficient secondary bonding interactions. The crystal structure of{[Cu2(CA)(terpy)2(dmso)2][Cu(CA)2(dmso)2](EtOH)}n (2), where dmso = dimethyl sulfoxide, consists of solventmolecules and two discrete modules, the dimer unit [Cu2(CA)(terpy)2(dmso)2]2+ and the anionic mononuclear unit[Cu(CA)2(dmso)2]2-. The dimer units form a layer by secondary bonding interactions, and the monomer units andethanol molecules are introduced between the layers. The magnetic properties of 1 and 2 have been investigatedin the temperature range 2.0-300 K. A weak ferromagnetic interaction was observed in 1, Ja = 2.36 cm-1 andzJb = -0.68 cm-1 while no exchange coupling was observed in 2.