Issue 22, 2011

Solvent-mediated crystal-to-crystal transformation within the CoBr2(1,4-dioxane)m(H2O)n family (m = 2, 3; n = 0, 2, 4) from 2D to 1D, and 0D

Abstract

A family of coordination compounds: CoBr2(1,4-dioxane)2 (1), CoBr2(1,4-dioxane)2(H2O)2 (2), CoBr2(1,4-dioxane)3(H2O)4 (3) and CoBr2(1,4-dioxane)2(H2O)4 (4 (C 2/c) and 5 (I 41/a)) with different dimensions have been crystallized from a solution of CH3OH/1,4-dioxane. The solvent-mediated transformation was observed from the blue kinetically favored 2D compound 1 to the red metastable 1D compound 2, 0D compound 3, and finally to the thermodynamically stable 0D compounds 4 and 5. The hydrogen bonds played a key role in the formation of the different networks of 2–5 with the increasing of the coordinated water molecules. The magnetic measurements showed that 1 was a canted antiferromagnet, and 3–5 acted as antiferromagnets.

Graphical abstract: Solvent-mediated crystal-to-crystal transformation within the CoBr2(1,4-dioxane)m(H2O)n family (m = 2, 3; n = 0, 2, 4) from 2D to 1D, and 0D

Supplementary files

Article information

Article type
Paper
Submitted
02 Jun 2011
Accepted
03 Aug 2011
First published
14 Sep 2011

CrystEngComm, 2011,13, 6801-6810

Solvent-mediated crystal-to-crystal transformation within the CoBr2(1,4-dioxane)m(H2O)n family (m = 2, 3; n = 0, 2, 4) from 2D to 1D, and 0D

Z. Duan, Y. Zhang, B. Zhang and D. Zhu, CrystEngComm, 2011, 13, 6801 DOI: 10.1039/C1CE05668A

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