A Series of Octanuclear-Nickel(II) Complexes Supported by Thiacalix[4]arenes
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- 作者：Kecai Xiong ; Feilong Jiang ; Yanli Gai ; Youfu Zhou ; Daqiang Yuan ; Kongzhao Su ; Xinyi Wang ; Maochun Hong
- 刊名：Inorganic Chemistry
- 出版年：2012
- 出版时间：March 5, 2012
- 年：2012
- 卷：51
- 期：5
- 页码：3283-3288
- 全文大小：377K
- 年卷期：v.51,no.5(March 5, 2012)
- ISSN：1520-510X
文摘
A series of discrete complexes, [Ni8(BTC4A)2(渭6-CO3)2(渭-CH3COO)4(dma)4]路H2O (1), [Ni8(BTC4A)2(渭6-CO3)2(渭-Cl)2(渭-HCOO)2(dma)4]路2DMF路2CH3CN (2), [Ni8(PTC4A)2 (渭6-CO3)2(渭-CH3COO)4(dma)4]路DMF (3), and [Ni8(PTC4A)2(渭6-CO3)2(渭-OH)(渭-HCOO)3 (dma)4] (4) (p-tert-butylthiacalix[4]arene = H4BTC4A, p-phenylthiacalix[4]arene = H4PTC4A, dma = dimethylamine, and DMF = N,N鈥?dimethylformamide), have been prepared under solvothermal conditions and structurally characterized by single-crystal X-ray diffraction analyses, powder XRD, and IR spectroscopy. These four complexes are stacked by dumbbell-like building blocks with one chairlike octanuclear-nickel(II) core, which is capped by two thiacalix[4]arene molecules and connected by two in situ generated carbonato anions and different auxiliary anions. This work implied that not only the solvent molecules but also the upper-rim groups of thiacalix[4]arenes have significant effects on the self-assembly of the dumbbell-like building blocks. The magnetic properties of complexes 1鈥?b>4 were examined, indicating strong antiferromagnetic interactions between the nickel(II) ions in the temperature range of 50鈥?00 K.