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Synthesis, Structure, and Characterization of Variable Chains in a Series of Transition Metal Coordination Compounds
Author(s) -
Kim Jungjoo,
Jo Hongil,
Yoon Sung Won,
Lee Min Hyung,
Choi WooJae,
Choi KwangYong,
Ok Kang Min
Publication year - 2020
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.201901188
Subject(s) - chemistry , trimer , ligand (biochemistry) , transition metal , crystallography , linker , photoluminescence , metal organic framework , metal , coordination complex , thermal stability , stereochemistry , polymer chemistry , dimer , organic chemistry , catalysis , biochemistry , receptor , physics , adsorption , computer science , optics , operating system
Five new transition metal coordination polymers, [Zn 3 ( bipy )( TC ) 6 ] ( 1 ), [Co 3 ( bipy )( TC ) 6 ] ( 2 ), [Co( bipy )( TC ) 2 ] ( 3 ), [Cd( bipy )( TC ) 2 ] ( 4 ), and [Cu 2 ( bipy )( TC ) 4 ] ( 5 ) ( bipy = 4,4'‐bipyridine; TC = 3‐thiophenecarboxylate), with chain structures, were solvothermally synthesized in high yields under mild reaction conditions. While compounds 1 , 2 , and 3 reveal peddle wheel‐like chain structures, compounds 4 and 5 exhibit ladder‐like chain backbones. The organic bipy ligand was utilized as a linker that connects each cluster consisting of the corresponding metal cation and the TC ligand in each infinite chain. While the frameworks of compounds 1 , 2 , 3 , and 5 are thermally robust up to ca. 300 °C, that of compound 4 reveals thermal stability to ca. 250 °C. The observed band gaps of the title compounds range from 1.94 to 3.64 eV. Photoluminescence (PL) properties arising from the intraligand as well as the ligand‐to‐metal charge transfer were studied for compounds 1 and 4 . The magnetic behavior of compound 2 is described by a coupled linear trimer, while those of compounds 3 and 5 turned out to be coupled spin dimers.