Issue 13, 2012

Amine-templated polymeric Mg formates: crystalline scaffolds exhibiting extensive hydrogen bonding

Abstract

Two novel polymeric Mg formates [(Fmd)Mg(HCOO)3] (1) and [(Gua)Mg(HCOO)3] (2) containing the formamidinium [Fmd+, (NH2–CH+–NH2)] and guanidinium [Gua+, C+(NH2)3] cations have been prepared under solvothermal conditions. 1 and 2 are isostructural; they crystallize in the orthorhombic space group Pnna. Their 3D scaffolds consists of Mg ions in an octahedral coordination environment bridged by formate ligands. The overall framework charge is negative, and the cations are located in the centre of the lattice cavities, forming extensive N–H⋯O hydrogen bonding with the surrounding cage. Both compounds have been characterized through single-crystal and powder X-ray diffraction, 1D and 2D solid-state NMR (1H, 13C and 15N), IR spectroscopy and TG-MS analysis. Their chemical reactivity towards ion exchange and ability as CO2 storage materials has been finally examined.

Graphical abstract: Amine-templated polymeric Mg formates: crystalline scaffolds exhibiting extensive hydrogen bonding

Supplementary files

Article information

Article type
Paper
Submitted
10 Jan 2012
Accepted
19 Apr 2012
First published
25 Apr 2012

CrystEngComm, 2012,14, 4454-4460

Amine-templated polymeric Mg formates: crystalline scaffolds exhibiting extensive hydrogen bonding

A. Rossin, M. R. Chierotti, G. Giambastiani, R. Gobetto and M. Peruzzini, CrystEngComm, 2012, 14, 4454 DOI: 10.1039/C2CE25048A

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