Mn{sub 0.95}I{sub 0.02}[PO{sub 3}(OH)] · 2H{sub 2}O phosphate–iodate, an inorganic analogue of phosphonates
Journal Article
·
· Crystallography Reports
- Moscow State University, Faculty of Geology (Russian Federation)
The new Mn{sub 0.95}I{sub 0.02}[PO{sub 3}(OH)] · 2H{sub 2}O phosphate–iodate (space group Pnam = Pnma, D{sub 2h}{sup 16}) is obtained under hydrothermal conditions. The crystal structure is determined without preliminary knowledge of the chemical formula. The structure consists of layers of MnO{sub 6} octahedra connected with PO{sub 4} tetrahedra. Water molecules are located between the layers. [IO3]{sup –} groups having a typical umbrella-like coordination are statistically implanted in layers of MnO{sub 6} octahedra at a distance of 1.2 Å from Mn atoms. Their content in the crystal is minor. The structures of the phosphate–iodate coincides with the structures of phosphonates with consideration for the replacement of one (OH) vertex of the PO{sub 4} tetrahedron by the organic methyl radical CH{sub 3}. In the structures of phosphonates and earlier studied phosphates, identical layers are distinguished and the cause of the existence of two MDO varieties is established based on the analysis within the OD theory. Possible hybrid structures derived from the prototypes under consideration are predicted.
- OSTI ID:
- 22472152
- Journal Information:
- Crystallography Reports, Journal Name: Crystallography Reports Journal Issue: 5 Vol. 60; ISSN CYSTE3; ISSN 1063-7745
- Country of Publication:
- United States
- Language:
- English
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