Journal
JOURNAL OF MOLECULAR STRUCTURE
Volume 1061, Issue -, Pages 14-18Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.molstruc.2013.12.053
Keywords
Tetrazole-1-acetic acid; Zn complex; Cd complex; Crystal structure; Solid state fluorescence; Helical chain
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Funding
- NSF of China [21161001]
- NSF of Jiangxi Province [2009ZDG02800]
- Graduate Innovative Special Fund Project of Gannan Normal University [YCX118006]
- Key Laboratory of Jiangxi University for Function of Materials Chemistry
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Two new d(10) metal complexes with tetrazolate-l-acetic acid, [Zn(1-tza)(Cl)(H2O)] (1) and [Cd(1-tza)(phen)(NO3)] (2) (1-Htza = tetrazole-1-acetic acid, phen = 1,10-phenanthroline), have been prepared, and their structures have been characterized by single-crystal X-ray diffraction. The flexibilities of 1-tza ligands result in 1-D helical chained structures of the two obtained complexes, in which the 1-tza ligands adopt different coordination mode: 1 with mu(2)-kO1: kN4 and 2 with mu(2)-kO1, O2: kN3. Compounds 1 exhibits a nonracemic enantiopure topology while compound 2 reveals to be mesomeric structures. The crystal packing in 1 and 2 is controlled mainly by hydrogen bonds and face-to-face pi-pi stacking interactions, respectively. Photoluminescence studies show that 1 and 2 exhibit strong luminescence. Moreover, compound 1 exhibits a second-order nonlinear optical coefficient equal to that of potassium dihydrogen phosphate (KDP). The thermal stability of the two complexes has also been investigated. (C) 2013 Elsevier B.V. All rights reserved.
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