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Journal of Coordination Chemistry Volume 64, 2011 - Issue 20
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Original Articles

Structural diversity in trinuclear nickel(II) complexes of 3,5-diamino-1,2,4-triazole

Guo-Fang Zhang Key Laboratory of Applied Surface and Colloid Chemistry, Shaanxi Normal University, Ministry of Education, Xi’an 710062, P.R. China, Xi’an 710062, P.R. ChinaCorrespondence[email protected]
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Ling Gao Key Laboratory of Applied Surface and Colloid Chemistry, Shaanxi Normal University, Ministry of Education, Xi’an 710062, P.R. China, Xi’an 710062, P.R. China; School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710062, P.R. China
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Ping Li Key Laboratory of Applied Surface and Colloid Chemistry, Shaanxi Normal University, Ministry of Education, Xi’an 710062, P.R. China, Xi’an 710062, P.R. China; School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710062, P.R. China
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Feng-Qi Zhao Xi’an Modern Chemistry Research Institute, Xi’an 710065, P.R. China
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Xue-Zhong Fan Xi’an Modern Chemistry Research Institute, Xi’an 710065, P.R. China
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Ning Chen Key Laboratory of Applied Surface and Colloid Chemistry, Shaanxi Normal University, Ministry of Education, Xi’an 710062, P.R. China, Xi’an 710062, P.R. China; School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710062, P.R. China
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Xiao-Ping Xiang Key Laboratory of Applied Surface and Colloid Chemistry, Shaanxi Normal University, Ministry of Education, Xi’an 710062, P.R. China, Xi’an 710062, P.R. China; School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710062, P.R. China
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Han-Chen Gao Key Laboratory of Applied Surface and Colloid Chemistry, Shaanxi Normal University, Ministry of Education, Xi’an 710062, P.R. China, Xi’an 710062, P.R. China; School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710062, P.R. China
&
Jie Wang Key Laboratory of Applied Surface and Colloid Chemistry, Shaanxi Normal University, Ministry of Education, Xi’an 710062, P.R. China, Xi’an 710062, P.R. China; School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710062, P.R. China
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Pages 3551-3559 | Received 18 Jun 2011, Accepted 06 Sep 2011, Published online: 13 Oct 2011
 
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Abstract

Two trinuclear 3,5-diamio-1,2,4-triazole(Hdatz)-derived nickel(II) compounds, [Ni3(Hdatz)6(H2O)6]Br6 · 4H2O (1) and [Ni3(Hdatz)6(datz)2(H2O)4]Cl4 · 6H2O (2), are reported. Structural analyses reveal that in 1 the six Hdatz ligands are bidentate N1, N2-bridging coordination. However, the X-ray diffraction analysis shows that in 2 there are eight triazole ligands, six of which are neutral and two deprotonated. Four neutral triazoles are N1, N2-bridging and two monodentate; the deprotonated triazoles (datz) are bidentate N1, N2-bridging. The coexistence of both neutral and anionic triazole ligands as well as different coordination modes in one compound is relatively rare. The difference in coordination modes is believed to be anion-controlled. Both compounds are additionally characterized by elemental analysis, IR, and UV-Vis spectroscopy.

Acknowledgments

The authors thank the National Natural Science Foundation of China (No. 21171112) as well as Program for Changjiang Scholars and Innovative Research Team in University (IRT1070) for the financial support.

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