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In situ synthesis of magnesium hydroxides modified with tripodal ligands in an organic medium

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Abstract

Layered magnesium hydroxides modified organically with tris(hydroxymethyl)aminomethane (Tris-NH2) were directly synthesized from magnesium chloride dissolved in a polar organic solvent, like dimethyl sulfoxide (DMSO), containing a small amount of water. Tris-NH2 acted as a base for precipitating magnesium hydroxides as well as an organic modifier. In contrast to the case of an aqueous solution, the use of organic solvents substantially increased the degree of modification of layered magnesium hydroxides with Tris-NH2 owing to the formation of bidentate Mg–O–C linkages by Tris-NH2 in addition to its tridentate bonding mode. Bidentate linkages, hydrolyzed readily in water, are stable in the organic media. Pentaerythritol (Tris-CH2OH), trimethylolethane (Tris-CH3), and trimethylolpropane (Tris-C2H5) were also successfully used for the synthesis of organically-modified layered magnesium hydroxides by the addition of tetrabutylammonium hydroxide as a base with DMSO as the solvent. The synthesis of hybrid magnesium hydroxides in organic solvents is expected to expand the chemistry of organically modified layered metal hydroxides with various metallic species and a wide variety of organic functional groups.

Graphical abstract: In situ synthesis of magnesium hydroxides modified with tripodal ligands in an organic medium

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Publication details

The article was received on 02 Oct 2017, accepted on 28 Nov 2017 and first published on 28 Nov 2017


Article type: Paper
DOI: 10.1039/C7DT03699J
Citation: Dalton Trans., 2018, Advance Article
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    In situ synthesis of magnesium hydroxides modified with tripodal ligands in an organic medium

    K. Muramatsu, Y. Kuroda, H. Wada, A. Shimojima and K. Kuroda, Dalton Trans., 2018, Advance Article , DOI: 10.1039/C7DT03699J

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