Abstract
Three new complexes: [Cd(btaa)(bipy)(CH3COO) · H2O] n (1), [Ni(btaa)2(H2O)4 · 6H2O] n (2), and [Mn(btaa)2(H2O)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.
Acknowledgments
The authors gratefully acknowledge the Postgraduate Foundation of Taishan University (No. Y05–2–02).