Issue 10, 2008
From the journal:

CrystEngComm

pH-triggered changes in the supramolecular self-assembly of Cu(II) malonate complexes†

Somnath Ray Choudhury,a   Atish Dipankar Jana,‡b   Chih-Yuan Chen,c   Amitava Dutta,d   Enrique Colacio,e   Hon Man Lee,c   Golam Mostafa*b  and  Subrata Mukhopadhyay*a  

* Corresponding authors

a Department of Chemistry, Jadavpur University, Kolkata, India
E-mail: smukhopadhyay@chemistry.jdvu.ac.in

b Department of Physics, Jadavpur University, Kolkata, India
E-mail: mostafa@phys.jdvu.ac.in

c Department of Chemistry, National Changhua University of Education, Changhua, Taiwan

d Department of Chemistry, Bangabasi Morning College, 19 Scott Lane, Kolkata, India

e Departamento de Química Inorgánica, Universidad de Granada, Granada, Spain

Abstract

Two different hydrate phases, namely, {[Cu(mal)2](picH)2·2H2O}n (1) and {[Cu(mal)2](picH)2·5H2O}n (2) [malH2 = malonic acid; picH = protonated 2-amino-4-picoline] could be synthesized from purely aqueous media simply by mixing the reactants in stoichiometric ratio but with a slight alteration in the acidity of the reaction media. When the solid-state structure of 1 is compared with the previously reported complex 2, interesting changes in the supramolecular self-assembly are noticed. We found that the observed pH-triggered change is exclusive in the ternary system stated and not for Ni(II), Co(II) or Mn(II). We also noticed the presence of a –CH3⋯Ow interaction between the methyl terminals of protonated picoline molecules and the oxygen atoms of lattice water molecules in 1.

Graphical abstract: pH-triggered changes in the supramolecular self-assembly of Cu(II) malonate complexes

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Article information

DOI
https://doi.org/10.1039/B802723D
Article type
Paper
Submitted
18 Feb 2008
Accepted
06 Jun 2008
First published
17 Jul 2008

CrystEngComm, 2008,10, 1358-1363

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pH-triggered changes in the supramolecular self-assembly of Cu(II) malonate complexes

S. R. Choudhury, A. D. Jana, C. Chen, A. Dutta, E. Colacio, H. M. Lee, G. Mostafa and S. Mukhopadhyay, CrystEngComm, 2008, 10, 1358 DOI: 10.1039/B802723D

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