The first aluminum methylphosphonate with a layered structure, designated AlMepO-ζ, giving an ideal composition of Al(OH)(O3PCH3)·H2O was synthesized with a hydrothermal procedure. AlMepO-ζ is monoclinic, space group P21/c, with a = 7.8676(7), b = 7.0744(13), c = 9.4789(7), β = 106.599(6)°. The framework in a sheet containing unidimensional [–Al–(OH)–Al–] chain is topologically the same as VO(O3PC6H5)·H2O. Methyl groups protrude into the interlamellar space. TG-DTA and MAS-NMR results revealed the decomposition mechanism.
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Maeda et al. (1997) studied this question.
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