New monodiphosphate Li9Cr3(P2O7)3(PO4)2: X-ray crystal structure and vibrational spectroscopy
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Francesco Capitelli
The new monodiphosphate Li9Cr3(P2O7)3(PO4)2 was synthesized and analyzed by single-crystal X-ray diffraction, infrared and Raman spectroscopy. It crystallizes in the trigonal space group P-3c1 with the following unit cell constants: a = b = 9.684(1) Å, c = 13.605(1) Å, V = 1104.9(2) Å3. The three-dimensional framework is made up of [(CrP2O7)3(PO4)2]9– layers, with CrO6 octahedra sharing vertices and edges with mono- and diphosphate groups. Li cations, spread over three different sites, fill up the remaining cavities, stabilizing the framework via Li—O bonds, making up tetrahedral arrangements at Li(2) and Li(3), and a complex hexacoordination at Li(1). IR and Raman spectra of Li9Cr3(P2O7)3(PO4)3 confirm the centrosymmetric structure and the bent configuration of the POP bridge of the diphosphate group.
© Oldenbourg Wissenschaftsverlag
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Articles in the same Issue
- Color groups associated with square and hexagonal lattices
- Crystal structure and twinning of HfPdGe
- New monodiphosphate Li9Cr3(P2O7)3(PO4)2: X-ray crystal structure and vibrational spectroscopy
- Spatial chemistry of the aluminium—platinum compounds: a quantum chemical approach
- Prevalance of intermolecular Bi … S interactions in bismuth dithiocarbamate compounds: Bi(S2CNR2)3
- Crystal-structure determination of the fluorescent bisazomethine pigment C36H26N4O4 from X-ray powder data
- Refinement strategies for fullerene structures: use of local, non-crystallographical point group symmetry
- Large-quantity single crystal synthesis of TPA-ZSM-5 using KOH as a mineralizer
- On hydrogen bonding in 2-amino-3-hydroxymethyl-1,3-propane diol (TRIS) – variable temperature neutron single crystal and DFT study
- What is a crystal? – follow-up
