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Abstract
Treatment of triazolyl ligand 3-(3-oxyphenyl)-5-(pyrazine-2-yl)-1,2,4-triazole (opt) with Cu(NO3)2·3H2O, Co(NO3)2·3H2O or NiCl2·6H2O resulted in three new complexes, [Cu(opt)2] (1), [Co(opt)2(H2O)2] (2), [Ni(opt)2(H2O)2] (3). Single-crystal X-ray crystallographic analyses reveal that all complexes 1–3 present mononuclear structures. Interestingly, various π···π interactions and hydrogen bonds interactions are discovered and extend these mononuclear structures to 3-D supramolecular networks. Notably, complex 1 presents the cavity construction with the approximate channel diameter 11.835 Å. Furthermore, the thermal analyses results are in reasonable agreement with the crystal structure analyses of complexes 1–3.
Acknowledgments
The authors are thankful for financial support from the National Outstanding Young Scholarship (Nos. 30825043) and National Natural Science Foundation (Nos. 20971110, J0830412 and 91022013), China Postdoctoral Science Foundation (Nos. 20110491005), Program for New Century Excellent Talents of Ministry of Education of China (NCET-07-0765), and the Outstanding Talented Persons Foundation of Henan Province.