Double and Triple Interpenetrations of the Three-Dimensional Frameworks [Cd(mea)(daptn){Ni(CN)₄}] and [Cd(mea)(dahxn){Ni(CN)₄}].H₂O (mea = 2-Aminoethanol, daptn = 1,5-Diaminopentane, dahxn = 1,6-Diaminohexane)

catena-Poly[cadmium-[μ-(2-aminoethanol-N:O)-μ-[μ-cyano-1κN:2κC– [trans-bis(cyano-C)nickel(II)]-μ-cyano-1κN:2κC]-μ-(1,5-diaminopentane-N:N')]], [Cd{Ni(CN)₄}(C₂H₇NO)(C₅H₁₄N₂)], (1), has a three-dimensional structural unit comprised of a distorted Cd-cornered rectangular box edged by catena-μ-1,5-diaminopentane, catena-μ-2-aminoethanol and catena-μ-trans-NC-Ni(CN)₂-CN bridges. The void space in one of the frameworks is filled with another to give a doubly interpenetrating framework structure. catena-Poly[[(2-aminoethanol-N,O)cadmium]-[μ-[μ-cyano-1κN:2κC– [trans-bis­(cyano-C)nickel(II)]-μ-cyano-1κN:2κC]-μ-(1,6-diaminohexane-N:N')] monohydrate], [Cd{Ni(CN)₄}(C₂H₇NO)(C₆H₁₆N₂)].H₂O, (2), contains 2-aminoethanol ligands chelated to Cd, which decreases the number of catena-μ-bridges about the Cd²⁺ ion to four, two each of catena-μ-1,6-diaminohexane and catena-μ-trans-NC-Ni(CN)₂-CN, giving a distorted adamantoid unit. The void space is occupied by two other frameworks and a water molecule to give a triply interpenetrated framework.

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