Issue 8, 2012

Control over multifarious entangled Co(ii) metal–organic frameworks: role of steric bulk and molar ratio of organic ligands

Abstract

A series of entangled metal–organic polymers, namely [Co(bcp)(bib)]n (1), {[Co(bce)(bib)0.5]·2H2O}n (2), {[Co(oba)(bib)]·H2O}n (3), {[Co(oba)(bib)0.5]·0.5H2O}n (4) and [Co(bce)(bi)0.5]n (5) (H2bcp = 1,3-bis(4-carboxy-phenoxy)propane, H2bce = 1,2-bis(4-carboxy-phenoxy)ethane, H2oba = 4,4′-oxybis(benzoic acid), bib = 1,4-bis(2-methyl-imidazol-1-yl)butane and bi = 1,1′-(1,4-butanediyl)bis(imidazole)), have been synthesized and structurally characterized by single crystal X-ray diffraction. Complexes 1–5 display various coordination motifs with different entangled forms and conformations. The result clearly indicates that the steric bulk effect of ligands is significant in the direction of these networks, which is also well regulated by the molar ratio. In addition, the magnetic behavior of polymers 1–4 are investigated.

Graphical abstract: Control over multifarious entangled Co(ii) metal–organic frameworks: role of steric bulk and molar ratio of organic ligands

Supplementary files

Article information

Article type
Paper
Submitted
09 Nov 2011
Accepted
06 Jan 2012
First published
15 Feb 2012

CrystEngComm, 2012,14, 2906-2913

Control over multifarious entangled Co(II) metal–organic frameworks: role of steric bulk and molar ratio of organic ligands

J. Liu, Y. Wang, T. Wu and J. Wu, CrystEngComm, 2012, 14, 2906 DOI: 10.1039/C2CE06509F

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