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Structural studies of Mo(VI) coordination chemistry crystal and molecular structure of ammonium [cis-dioxo(uramil-N,N-diacetato) molybdate(VI)] monohydrate

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Abstract

The crystal structure of ammonium [cis-dioxo(uramil-N, N-diacetato) molybdate(VI] monohydrate, C8H12MoN4O10, has been determined. The crystals are monoclinic: space groupP21/c,a = 6.744(3),b = 18.07(1),c = 11.500(9) Å, β = 102.01(5) °,Z = 4. X-ray data were collected by counter methods using MoKα radiation, and least-squares refinement led toR = 0.048 for the 1601 independent reflections for which ¦F 0 ¦2 > 3σ(¦F α¦2). The anion contains acis-dioxo metal system while the ligand coordinates as a tetradentate through the nitrogen and two oxygen atoms of theN-diacetate group and a carbonyl oxygen atom of the uramil skeleton. Metal ligand bondstrans to the terminal oxygen atoms are significantly lengthened. The pyrimidine ring of the ligand having lost a proton from the C5 atom is planar and is also coplanar with the metal dioxo group.

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Butcher, R.J., Penfold, B.R. Structural studies of Mo(VI) coordination chemistry crystal and molecular structure of ammonium [cis-dioxo(uramil-N,N-diacetato) molybdate(VI)] monohydrate. Journal of Crystal and Molecular Structure 6, 1–12 (1976). https://doi.org/10.1007/BF01841228

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