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1D Ladder‐like Chain and 1D Channeled 3D Supramolecular Architectures Based on Benzophenone‐2,4′‐dicarboxylic Acid
Author(s) -
YANG XiaoGang,
LI DongSheng,
FU Feng,
WU YaPan,
WANG JiJiang,
WANG YaoYu
Publication year - 2008
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.200890124
Subject(s) - chemistry , supramolecular chemistry , hydrogen bond , benzophenone , ligand (biochemistry) , molecule , crystallography , dicarboxylic acid , stereochemistry , photochemistry , polymer chemistry , crystal structure , organic chemistry , biochemistry , receptor
The hydrothermal reactions of AgNO 3 , 2,2′‐bipyridyl, and benzophenone‐2,4′‐dicarboxylic acid gave rise to two 3D supramolecular architectures, namely H 2 L·H 2 O ( 1 ), [Ag(bpy) 2 ]·HL·H 2 O ( 2 ) (bpy2,2′‐bipyridyl, H 2 Lbenzophenone‐2,4′‐dicarboxylic acid). The two compounds are extended by hydrogen bonds in two different approaches. In the case of 1 , one‐dimensional ladder‐like structure is firstly formed through O–H···O hydrogen bonding between H 2 L ligands and water molecules, then extended to a 3D supramolecular architecture. Compound 2 possesses 3D supramolecular architecture containing 1D open channels, which are driven due to the strong H‐bonding interactions occurring between the HL anions and water molecules; interestingly, [Ag(bpy) 2 ] + cations are linked together through π‐π interactions between bpy ligands and weak Ag···Ag interactions, and then reside in these channels by C–H···O hydrogen‐bond. The photoluminescence properties of these compounds were also investigated, the emission maxima for 2 exhibits red‐shift compared with that of free ligand and 1 due to chelating effect of the 2,2′‐bipyridine ligand to the silver ion and the presence of aromatic π‐packing.