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The crystalline α,ω-dicarboxylate metal complex with the longest aliphatic chain to date: uranyl
Pierre Thuéry1, Jack Harrowfield
1NIMBE, CEA, CNRS, Université Paris-Saclay, CEA Saclay, 91191 Gif-sur-Yvette, France. pierre.thuery@cea.fr.
Abstract:
Under solvo-hydrothermal conditions, 1,15-pentadecanedioic acid (H2C15) reacts with uranyl ions to form the complex [H2NMe2]2[(UO2)2(C15)3] (1), in which the uranyl ions are tris-chelated by carboxylate groups and the well-ordered aliphatic chains are either all-trans or kinked. 1 crystallizes as a two-dimensional network of the bilayer type and with the {82·10} point symbol, the packing displaying alternate sheets containing either the ionic parts or stacks of aliphatic chains, at variance with the helicates or honeycomb networks previously obtained with other long-chain HOOC-(CH2)n-2-COOH dicarboxylic acids (n = 9-13) and bulkier counterions.
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