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The title compound, (C4H12N2)2[Mn2Cl6(H2O)4]Cl2, consists of two piperazinium cations, two chloride anions and a dimanganese complex anion, which lies on a center of symmetry. Each MnII atom is located in a distorted octa­hedral environment. The cations and the anions are held together by O—H...Cl and N—H...Cl hydrogen bonds. The structure features the formation of inorganic and organic ionic layers, which interpenetrate each other and which are linked by hydrogen bonds.

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The title compound, (C15H25N2O)[FeCl4], consists of one matrinium cation {matrine is (7aS,13aR,13bR,13cS)-dodeca­hydro-1H,5H,8H-dipyrido[2,1-f:3′,2′,1′-ij][1,6]-naphthyridin-10-one} and one [FeCl4] anion. One ring of the matrinium cation has a half-chair conformation, whereas the others have chair conformations. Chiral chains of the title compound are formed by C—H...O and N—H...O hydrogen bonds.

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In the title compound, 2C18H18O2·C6H12N2, 5,5′-diallyl­biphenyl-2,2′-diol and 1,4-diaza­bicyclo­[2.2.2]octane mol­ecules are linked by O—H...O and O—H...N hydrogen bonds.
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