Synthesis and crystal structures of Cd(II), Ni(II), and Mn(II) complexes of 1H-benzotriazole-1-acetic acid

• Published in: Journal of coordination chemistry Vol. 63; no. 7; pp. 1118 - 1129
• Main Authors: Zheng, Zebao, Wu, Rentao, Li, Jikun, Han, Yinfeng, Lu, Jingrong
• Format: Journal Article
• Language: English
• Published: Abingdon Taylor & Francis Group 10.04.2010; Taylor & Francis Ltd
• Subjects: 1H-benzotriazole-1-acetic acid; Acids; Coordination compounds; Fluorescent property; Hydrogen bonds
• ISSN: 0095-8972; 1029-0389
• DOI: 10.1080/00958971003749706

Three new complexes: [Cd(btaa)(bipy)(CH 3 COO) · H 2 O] n (1), [Ni(btaa) 2 (H 2 O) 4 · 6H 2 O] n (2), and [Mn(btaa) 2 (H 2 O) 2 ] n (3) (bipy = 2,2′-bipyridine, Hbtaa = 1H-benzotriazole-1-acetic acid) were prepared and characterized by IR, elemental analyses, thermogravimetric analyses, and single-crystal X-ray analyses. In 1, cadmium ions are linked by btaa ligands into 1-D linear chains; the chains are extended into layers through C-H ··· O hydrogen bonds and π-π stacking interactions. Complex 2 is a mononuclear structure, extended to a 3-D network through multiple intermolecular hydrogen bonds. In 3, manganese is bridged by carboxylate groups of btaa in the syn-skew bidentate mode in two directions to form a 2-D grid-like framework with a (4, 4) topology. The solid-state fluorescence spectrum of 1 shows that the excitation peak is at 355 nm while the maximum emission peak is at 424 nm.