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Three Polyoxometalate‐Based Coordination Polymers Constructed from the Same Dimetallic Cyclic Building Block
Author(s) -
Gu Min,
Ren Yuanhang,
Hu Yichen,
Tang Min,
Kong Zuping,
Yue Bin,
He Heyong
Publication year - 2015
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.201402938
Subject(s) - chemistry , polyoxometalate , moiety , cyclic voltammetry , supramolecular chemistry , electrochemistry , crystallography , hydrothermal synthesis , nickel , hydrothermal circulation , cobalt , yield (engineering) , medicinal chemistry , stereochemistry , polymer chemistry , inorganic chemistry , crystal structure , organic chemistry , electrode , catalysis , seismology , geology , materials science , metallurgy
The reactions of silicotungstate, 2,5‐bis(3‐pyridyl)‐1,3,4‐oxadiazole (3‐bpo), and copper, cobalt, or nickel acetate under hydrothermal condition yield the three compounds [(SiW 12 O 40 )Cu 2 (3‐bpo) 2 (C 5 H 4 NCOOH) 2 ] · H 2 O ( 1 ), [(SiW 12 O 40 )Co 2 (3‐bpo) 2 (C 5 H 4 NCOOH) 2 (H 2 O) 2 ] · 2H 2 O ( 2 ), and [(SiW 12 O 40 )Ni 2 (3‐bpo) 2 (C 5 H 4 NCOOH) 2 (H 2 O) 2 ] · 3H 2 O ( 3 ), respectively, in which the nicotinic acid ligands are generated from the in situ decomposition of 3‐bpo during the hydrothermal process. In the three structures, the polyoxometalate (POM) serves as the center and is imbedded within the dimetallic cyclic [M 2 (3‐bpo) 2 (C 5 H 4 NCOOH) 2 ] 4+ moiety through coordination bonds to form infinite one‐dimensional (1D) supramolecular snadwich‐like structures. Owing to the difference in the metal ions, the packing style of [Cu 2 (3‐bpo) 2 (C 5 H 4 NCOOH) 2 ] 4+ is different from that of [M 2 (3‐bpo) 2 (C 5 H 4 NCOOH) 2 ] 4+ (M = Co, Ni). The electrochemical behaviors of compounds 1 – 3 were studied by cyclic voltammetry.