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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/4153

Title: Vapor-Diffusion-Mediated Single Crystal-to-Single Crystal Transformation of a Discrete Dimeric Copper(II) Complex to a Discrete Tetrameric Copper(II) Complex
Authors: MOBIN, SM
SRIVASTAVA, AK
MATHUR, P
LAHIRI, GK
Keywords: photochemical 2+2 cycloaddition
2-dimensional coordination polymer
metal-organic framework
solid-state
structural transformation
guest removal
network
dehydration
immobilization
rehydration
Issue Date: 2009
Publisher: AMER CHEMICAL SOC
Citation: INORGANIC CHEMISTRY, 48(11), 4652-4654
Abstract: The symmetric dimeric complex [Cu(mu(2)-hep)(TFA)(H(2)O)](2) (1) has been synthesized from 2-(2-hydroxyethyl)pyridine (hep-H), trifluoroacetic acid (TFA-H), and copper acetate in a 95:5 (v/v) MeOH-H(2)O mixture at 298 K. Each Cu(II) ion in 1 is linked with two mu(2)-alcoholic oxygen atoms and one pyridine nitrogen atom of hep, and the other two coordination sites are occupied by the oxygen donors of TFA and H(2)O. At room temperature, the blue single crystals of 1 transform to the green single crystals of a tetrameric complex, [Cu(4)(mu(3)-hep)(2)(mu(2)-hep)(2)(mu(2)-TFA)(2)(TFA)(2)] (2), in presence of alcoholic vapor. The facile single crystal-to-single crystal (SCSC) transformation of 1 to 2 is accompanied by the removal of coordinated H(2)O molecules in 1 and concomitant formation of four new covalent bonds, two Cu-O(mu(3)-hep) and two Cu-O(u(2)-TFA). The SCSC transformation of 1 to 2 is selective to the alcoholic vapor; the exposure of single crystals of 1 to heat or light or in vacuum has resulted in an immediate loss in crystallinity.
URI: http://dx.doi.org/10.1021/ic900510v
http://dspace.library.iitb.ac.in/xmlui/handle/10054/4153
http://hdl.handle.net/10054/4153
ISSN: 0020-1669
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