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metal-organic compounds
[NH3(CH2)2NH3][Mn(SO4)2(H2O)4] shows an alternate stacking of inorganic layers of tetraaquabis(sulfato-O)manganese anions, [Mn(SO4)2(H2O)4]2-, and organic layers of [NH3(CH2)2NH3]2+ cations. Anions and cations are linked together through N-HO hydrogen bonds to form a three-dimensional network.