Synthesis, crystal structures and characterization of four coordination polymers based on 5-amino-2,4,6-triiodoisophthalic acid
Document Type
Article
Publication Date
1-1-2011
Abstract
One homochiral 1D coordination polymer [Cu(ATIBDC)(2,2′-bipy)] ·3H2O·CH3OH (1) and three achiral 1D coordination polymers: [Cd(ATIBDC)(2,2′-bipy)(H2O)] ·3H2O (2), [Cd(ATIBDC)(phen)(H2O)]·4H 2O (3), and [Mn(ATIBDC)(phen)2]·5H2O (4) have been synthesized and characterized (H2ATIBDC=5-amino-2,4,6- triiodoisophthalic acid, 2,2′-bipy=2,2′-bipyridine, and phen=1,10-phenanthroline). Extended high dimensional network architectures are further constructed with the help of weak secondary interactions, such as hydrogen bonding, aromatic stacking, and halogen bonding (CI...π and CI...N/O). Complex 1 crystallizes in the monoclinic system with chiral space group P2(1) and exhibits a right-handed 21 helical chain structure. The homochirality of 1 was confirmed by CD spectrum. Interestingly, two new configurations of decameric water cluster are found in 3 and 4. The acyclic tetrameric cluster (H2O)3(CH3OH) in 1 and (H2O)4 in 2 array into highly ordered helical infinite chains. Thermal stabilities of all the complexes have been studied. Solid state fluorescent properties of the Cd(II) complexes have been explored. © 2011 Elsevier Inc. All rights reserved.
Keywords
Synthesis, Crystal structures, Characterization, Coordination polymers, Decameric water clusters, Fluorescence spectra
Divisions
CHEMISTRY
Funders
Key Laboratory of Environmental Material and Environmental Engineering of Jiangsu Province,Postdoctoral Foundation of Yangzhou University
Publication Title
Journal of Solid State Chemistry
Volume
184
Issue
5
Publisher
Elsevier