Douglasite structure

Dopa — see Phenylalanine, dihydroxy-Dopplerite structure, 6, 849 Douglasite structure, 6, 846 Down s syndrome Alzheimer s disease, 6,770 DPP A process, 6,911 Drugs absorption metals, 6, 774... 

Gagarinite, NaCaLnF6, apparently contains isolated LnF63- octahedra, but its crystal structure is unknown. Hexachloromanganate(II) and ferrate(II) ions are present in the minerals chlor-manganokalite and rinneite, respectively, and iron(II) or iron(III) ions with four and five chloride ions in the coordination sphere are represented by the species douglasite and erythrosiderite. The coordination spheres are completed by water molecules, and these chloro complexes correspond to well-known compounds prepared in the laboratory.2... 

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