Synthesis, crystal structures and characterization of four coordination polymers based on 5-amino-2,4,6-triiodoisophthalic acid
Abstract
One homochiral 1D coordination polymer [Cu(ATIBDC)(2,2'-bipy)]·3H 2O·CH 3OH ( 1) and three achiral 1D coordination polymers: [Cd(ATIBDC)(2,2'-bipy)(H 2O)]·3H 2O ( 2), [Cd(ATIBDC)(phen)(H 2O)]·4H 2O ( 3), and [Mn(ATIBDC)(phen) 2]·5H 2O ( 4) have been synthesized and characterized (H 2ATIBDC=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 (C-I… π and C-I…N/O). Complex 1 crystallizes in the monoclinic system with chiral space group P2(1) and exhibits a right-handed 2 1 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 (H 2O) 3(CH 3OH) in 1 and (H 2O) 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.
- Publication:
-
Journal of Solid State Chemistry France
- Pub Date:
- May 2011
- DOI:
- 10.1016/j.jssc.2011.03.050
- Bibcode:
- 2011JSSCh.184.1263Z