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Santu Chakraborty, Subhajit Dinda, Ramgopal Bhattacharyya, Alok Kamur Mukherjee

Syntheses, spectroscopic and X-ray structure analyses of two dioxouranium (VI) complexes: supramolecular framework built from O—H…O, C—H…O and stacking interactions

Keywords: Dioxouranium (VI) complex, Supramolecular framework, Single crystal structure analysis, X-ray diffraction

Two dioxouranium(VI) complexes, [UO₂(PBHA)₂(DMSO)] (I) and [UO₂(SALOP)(H₂O)] (II), PBHA = N-phenyl benzohydroxamate, DMSO = dimethyl sulfoxide, SALOP = N,N′-bis (salicylidene)-o-phenylene diaminate have been synthesized, and characterized by spectroscopic and X-ray studies. Both compounds (I) and (II) crystallize in orthorhombic system with space group Pbca. The molecules in (I) are linked by intermolecular C–H…O hydrogen bonds into 32-membered tetrameric clusters (U₄C₁₂O₈N₄H₄), which are further connected via uranyl oxygen atoms forming a three-dimensional supramolecular framework. In (II), intermolecular O—H…O hydrogen bonds between molecules related by inversion and translation generate infinite zigzag chains of R₂²(8) rings running along the [010] direction. The parallel chains are interlinked through C—H…O hydrogen bonds producing a complex supramolecular architecture in (II).

Zeitschrift für Kristallographie, Oldenbourg Wissenschaftsverlag

Print ISSN: 0044-2968
Volume: 221, 08/2006
Pages: 606 - 611

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