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Synthesis, Crystal Structures and Fluorescent Properties of Two 2,2′‐Biquinoline‐4,4′‐dicarboxylate‐based Cadmium(II) and Cobalt(II) Complexes
Author(s) -
Dai PeiXia,
Yang EnCui,
Wang XiuGuang,
Zhao XiaoJun
Publication year - 2008
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.200800008
Subject(s) - fluorescence , denticity , thermal stability , crystallography , metal , cobalt , chemistry , metal ions in aqueous solution , zigzag , chelation , crystal structure , luminescence , cadmium , photoluminescence , inorganic chemistry , materials science , organic chemistry , physics , geometry , mathematics , optoelectronics , quantum mechanics
Two metal‐organic coordination polymers with one‐dimensional infinite chain motif, [Cd(bqdc)(phen) 2 ] n ( 1 ) and [Co(bqdc)(phen)(H 2 O) 2 ] n ( 2 ) (H 2 bqdc = 2,2′‐biquinoline‐4,4′‐dicarboxylic acid, phen = 1,10‐phenanthroline), have been synthesized under similar solv/hydrothermal conditions and fully structural characterized by elemental analysis, IR, and single‐crystal X‐ray crystallography. Their thermal stability and photoluminescence properties were further investigated by TG‐DTA and fluorescence spectra. In both complexes, the adjacent metal ions (Cd II for 1 and Co II for 2 ) are linked together by dicarboxylate groups of bqdc dianions in chelating bidentate and monodentate modes, respectively, generating a zigzag chain for 1 and linear chain for 2 . The relatively higher thermal stability up to 324 °C for 1 and strong fluorescence emissions jointly suggest that they are good candidates for luminescent materials.