Research article - Peer-reviewed, 2014
A structural study of D-mannitolatodimolybdate(VI) complexes in aqueous solutionPettersson, Lage; Lyxell, Dan-Göran; Persson, Ingmar
AbstractThe structure of the D-mannitolatodimolybdate(VI) complex has been determined by means of large angle X-ray scattering (LAXS) in aqueous solution at two pH values, 2.0 and 5.5. The two complexes have in principle the same structure in aqueous solution, two face-sharing molybdate(VI) octahedra connected to one D-mannitol ligand, as previously observed in the solid state. In the deprotonated form of the complex, pH 5.5, the D-mannitol ligand has lost a proton and as a result the MoMo distance is 0.054 Å shorter than the protonated form, pH 2.0. This indicates that it is a proton on an oxygen shared by molybdate groups that leaves the complex at deprotonation and forces the molydate(VI) octahedra even closer to each other.
KeywordsMolybdate; D-mannitol; Structure; Aqueous solution; LAXS
2014, volume: 81, pages: 308-311
Swedish University of Agricultural Sciences, The Department of Chemistry and Biotechnology
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