Abstract
AbstractA novel metallo‐organically templated pentaborate with layered framework, [Cd(TETA)(C2H3O2)][B5O6(OH)4] (1) (TETA = triethylenetramine), was synthesized under mild solvothermal conditions. The structure was determined by single‐crystal X‐ray diffraction and further characterized by FT‐IR spectroscopy, elemental analysis, thermogravimetric analysis, and photoluminescence spectroscopy. The structure consists of an isolated polyborate anion [B5O6(OH)4]– and the cadmium complex cation of [Cd(TETA)(C2H3O2)]+, which contains both organic amine and organic acid ligands. The [B5O6(OH)4]– units are connected together by hydrogen bonds, and a 2D sheet‐like framework with rectangle‐like 12‐membered boron rings are formed. The [Cd(TETA)(C2H3O2)]+ complex cations are located in the free space between the layers and connect the adjacent borate layers through hydrogen bonds to form a three‐dimensional supramolecular network. The luminescent properties of the compound were studied for the first time in the series of metallo‐organically‐templated pentaborates, and a blue luminescence occurs with an emission maximum at 468 nm upon excitation at 397 nm.
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