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Journal of Coordination Chemistry Volume 61, 2008 - Issue 20
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Original Articles

Syntheses, characterizations and crystal structures of two new complexes, [Co2(CH2=C(CH3)CO2)4(phen)2(H2O)2] and [Pb2(CH2=C(CH3)CO2)4(phen)2]

Tie-Jun Cai College of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, Hunan, 411201, P.R. ChinaCorrespondence[email protected]
,
Wen-Jun Jiang College of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, Hunan, 411201, P.R. China
,
Qian Deng College of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, Hunan, 411201, P.R. China
,
Zhen-Shan Peng College of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, Hunan, 411201, P.R. China
,
Yun-Fei Long College of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, Hunan, 411201, P.R. China
,
Hong Liu College of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, Hunan, 411201, P.R. China
&
Mei-Ling Liu College of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, Hunan, 411201, P.R. China
 show all
Pages 3245-3252 | Received 06 Jun 2007, Accepted 05 Sep 2007, Published online: 13 Oct 2008
 
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Abstract

Two new complexes, [Co2(CH2=C(CH3)CO2)4(phen)2(H2O)2] (1) and [Pb2(CH2=C(CH3)CO2)4(phen)2] (phen = 1,10-phenanthroline) (2), have been synthesized and structurally characterized by single crystal X-ray diffraction methods. There are two cocrystallized conformers of [Co(CH2=C(CH3)CO2)2(phen)(H2O)] in the asymmetric unit of 1 with the Co atoms displaying similar coordination modes. In the asymmetric unit of 2, there exist two crystallographically independent [Pb(CH2=C(CH3)CO2)2(phen)] molecules with the Pb atoms showing completely different coordination geometries. Weak intermolecular interactions such as hydrogen bonding and π–π stacking are responsible for the supramolecular assembly and stabilization of the crystal structures of 1 and 2. The complexes are characterized by elemental analysis, IR spectra, and UV–Vis spectra. The fluorescent properties of 2 are also discussed.

Acknowledgement

This project was supported by the Scientific Research Fund of Hunan Provincial Education Department.

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