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Synthesis, Crystal Structures, and Photoluminescence of a Series of Coordination Polymers with Two Homologous Functional Flexible Ligands
Author(s) -
Zhou HongPing,
Wang Peng,
Hu ZhangJun,
Li Lin,
Chen JingJin,
Cui Yang,
Tian YuPeng,
Wu JieYing,
Yang JiaXiang,
Tao XuTang,
Jiang MinHua
Publication year - 2007
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200600887
Subject(s) - chemistry , hydrogen bond , crystallography , ligand (biochemistry) , homologous series , crystal structure , infrared spectroscopy , coordination polymer , coordination complex , stereochemistry , molecule , metal , organic chemistry , biochemistry , receptor
Two functional, flexible ligands, namely 3,6‐dipyrazolyl‐9‐ethylcarbazole ( L 1 ) and 3,6‐diimidazolyl‐9‐ethylcarbazole ( L 2 ) have been synthesized and characterized and their coordination to various Ag I , Cd II , and Co II salts investigated. Six new complexes, 1 – 6 , have been obtained and fully characterized by IR spectroscopy, elemental analysis, and single‐crystal X‐ray diffraction. The 2D double helix framework of the complex [CdL 1 I 2 ] n ( 1 ) is formed by C–H ··· I hydrogen bonds, whereas the same 2D double helix framework of compound [{AgL 1 SO 3 PhCH 3 } 2 (CH 3 OH)(H 2 O)] n ( 2 ) is formed by S–O ··· H and C–H ··· O hydrogen bonds and weak π–π interactions. The coordination modes of Cd II and Co II in [CdL 2 2 (NCS) 2 ] n ( 3 ), [CoL 2 2 (NCS) 2 (CHCl 3 ) 2 ] n ( 4 ), [CdL 2 2 (NO 3 ) 2 (CH 3 OH) 2 ] n ( 5 ), and [CoL 2 2 (NO 3 ) 2 (CH 3 OH) 2 ] n ( 6 ) are the same, but in the packing diagram interlayers form a 3D network through C–H ··· S interactions and π–π interactions in 3 , interlayers form a 3D network through S ··· S interactions and π–π interactions in 4 , novel 3D structures are formed by interchain O ··· H–C hydrogen bonding and interlayer O ··· H–C hydrogen‐bonding and π–π interactions in 5 and 6 . The structural differences between these complexes show the influence of the orientation of the coordinating group of the ligand. These results also show that the metal ion, anion, and nonbonding and π–π interactions are significant factors in controlling the structural topology of these metal‐organic supramolecular architectures. In addition, the luminescence properties of L 1 , 1 , L 2 , and 3 are investigated in the solid state at room temperature. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)