Please use this identifier to cite or link to this item:
Title: Cobalt(II) coordination polymers containing trans-1,2-Bis(4-pyridyl)ethene and their magnetic properties
Authors: Peedikakkal, A.M.P.
Song, Y.-M.
Xiong, R.-G.
Gao, S.
Vittal, J.J. 
Keywords: Anions
Bridging ligands
Magnetic properties
Metal-organic frameworks
Issue Date: Aug-2010
Citation: Peedikakkal, A.M.P., Song, Y.-M., Xiong, R.-G., Gao, S., Vittal, J.J. (2010-08). Cobalt(II) coordination polymers containing trans-1,2-Bis(4-pyridyl)ethene and their magnetic properties. European Journal of Inorganic Chemistry (24) : 3856-3865. ScholarBank@NUS Repository.
Abstract: Reaction of the CoII ion and the bpe [trans-1,2-bis(4-pyridyl)- ethene] ligand in the presence of the CH3CO2 -, CF3CO2 -, C6H5CO 2 - and NO3 - anions affords six coordination polymers, namely [Co2(μ-bpe)2(μ-O 2CCH3)2(O2CCH3) 2].H2O (1), [Co2(μ-bpe)2(μ- O2CCF3)2(O2CCH3) 2] (2), [Co(μ-bpe)2-(O2CCF3) 2] (3), [Co(μ-bpe)(O2CC6H5) 2(HO{O}CC6H5)2] (4), [Co(μ-bpe)(O2CC6H5)2(CH 3OH)2] (5)and[Co2(μ-bpe)3(NO 3)3- (CH3OH)](NO3) (6). All the compounds have been characterized by X-ray crystallography, IR spectroscopy and thermogravimetry. Variable-temperature magnetic measurements were also performed on 3 and 6. Compounds 1 and 2 form 1D molecular ladder coordination polymers bridged by acetate ligands. Replacing the acetate ligands completely by trifluoroacetate ligands produced interpenetrated squaregrid sheets in 3. Replacing acetate and trifluoroacetate ligands by benzoate ligands resulted in two 1D coordination polymers, 4 and 5, having zigzag and linear structures, respectively. When the nitrate anion was used, a 3D network, 6, was afforded with inclined interpenetration of a 1D molecular ladder structure with threefold polycatenation. The variation of anions, reaction conditions and the ratio of reactants profoundly affect the final topological structure of the coordination polymers synthesized. The trifluoroacetate and nitrate anions influence the topology and the degree of interpenetration in the coordination polymers 3 and 6, respectively. © 2010 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.
Source Title: European Journal of Inorganic Chemistry
ISSN: 14341948
DOI: 10.1002/ejic.201000375
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.


checked on Jan 15, 2019


checked on Jan 7, 2019

Page view(s)

checked on Dec 28, 2018

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.