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metal-organic compounds
The title compound, cobalt aluminium phosphate 0.5-ethylenediamine, is a further example of the partial replacement of aluminium by cobalt during hydrothermal-templated synthesis. The four-connected framework has the zeolite gismondine topology, being similar to the MAPO-43 precursor magnesium aluminophosphate (Al6,Mg2)P8O32.2NC6H16 [Pluth et al. (1989). J. Am. Chem. Soc. 111, 1692-1698]. The structure can be described as an occupancy modulation of an I41/a parent structure; the ethylenediamine disorder is modelled successfully in monoclinic space group I2/c.