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Structurally Different Calcium(II) Complexes with 5‐Substituted Tetrazole Ligands
Author(s) -
Liu Qiao,
Zhao Li Yang,
Lu Yi Ming,
Yue Qiu Yan,
Zhang Fei Fei,
Wei Bo,
Li Qiao Yun,
Yang Gao Wen
Publication year - 2016
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201500748
Subject(s) - tetrazole , chemistry , carboxylate , ligand (biochemistry) , hydrogen bond , acetic acid , luminescence , ring (chemistry) , crystallography , stereochemistry , crystal structure , medicinal chemistry , molecule , organic chemistry , receptor , materials science , biochemistry , optoelectronics
Abstract Three different tetrazole‐carboxylate ligands, Hpymtza, Hpytza, and H 2 dtzeda were chosen to be reacted with Ca(NO 3 ) 2 · 4H 2 O, resulting in the formation of three coordination compounds, [Ca(pymtza) 2 (H 2 O) 4 ] ( 1 ), [Ca(pytza) 2 (H 2 O) 2 ] ( 2 ), and [Ca(dtzeda)(H 2 O) 2 ] ( 3 ) [Hpymtza = 5‐(2‐pyrimidyl)tetrazole‐1‐acetic acid, Hpytza = 5‐(3‐pyridyl)tetrazole‐2‐acetic acid, and H 2 dtzeda = 1, 2‐bis(tetrazol‐5‐yl)ethane‐N1, N1′‐diacetic acid]. X‐ray diffraction analysis revealed that compound 1 displays a mononuclear structure, compound 2 is a one dimensional zigzag chain structure, whereas 3 shows a three‐dimensional structure. The structures were controlled by not only the different substituents of the tetrazolyl ring, but also the complementary hydrogen bonds. Furthermore, the luminescence properties of compounds 1 – 3 were investigated at room temperature in the solid state. These emissions can be tentatively attributed to the ligand centered emission.