The crystalline alpha,omega-dicarboxylate metal complex with the longest aliphatic chain to date: uranyl 1,15-pentadecanedioate

摘要

Under solvo-hydrothermal conditions, 1,15-pentadecanedioic acid (H2C15) reacts with uranyl ions to form the complex [H2NMe2](2)[(UO2)(2)(C-15)(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 {8(2).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.