Polymeric Cadmium(II) Nitrate Adduct of a Flexible Double Betaine: [Cd₂(L)₂(NO₃)₂(H₂O)₃]_n(NO₃)_2n [L = meso-2,5-Bis(trimethylammonio)adipate]

The title complex, catena-poly[(diaquacadmium)-μ-[meso-2,5-bis(trimethylammonio)adipato-O,O′:O′′, O′′′]aquadinitratocadmium)-μ-[meso-2,5-bis(trimethylammonio)adipato-O,O′:O′′, O′′′] dinitrate], [Cd₂(L)₂(NO₃)₂(H₂O)₃]_n(NO₃)_2n [L = ⁻O₂CCH(Me₃N⁺)CH₂CH₂CH(Me₃N⁺)CO₂⁻], consists of an infinite zigzag chain in which the two independent Cd^II atoms, lying on separate crystallographic C₂ axes, have approximately pentagonal bipyramidal and very distorted octahedral coordination geometries, respectively. The formation of hydrogen bonds between the aqua ligands and other O atoms leads to a layer network.

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