Abstract

A new neptunium(V) complex [(NpO2)2(CH3COO)2(H2O)] ⋅ 2H2O was synthesized and its crystal structure was determined. The unit cell parameters are: a = 24.007(10) A, b = 6.779(3) A, c = 8.076(3) A, space group Pnma, Z = 4, V = 1314.2(9) A3, R = 0.049, wR(F2) = 0.105. The crystal structure of the compound is composed of neutral [(NpO2)2(CH3COO)2(H2O)] layers and molecules of the water of crystallization. Each of the crystallographically independent neptunoyl ions performs a bidentate function thus forming a composite system of cation-cation bonds.

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