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A Novel Open-Framework Cerium Phosphate Fluoride: (NH4)[CeIVF2(PO4)]

โœ Scribed by Ranbo Yu; Dan Wang; Takahiro Takei; Hitoshi Koizumi; Nobuhiro Kumada; Nobukazu Kinomura

Publisher
Elsevier Science
Year
2001
Tongue
English
Weight
265 KB
Volume
157
Category
Article
ISSN
0022-4596

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โœฆ Synopsis

A novel open-framework cerium phosphate 6uoride, (NH 4 )[Ce IV F 2 (PO 4 )], has been synthesized under hydrothermal conditions and characterized by means of single-crystal X-ray di4raction, ion chromatography analysis, and thermal analysis. The compound crystallizes in the monoclinic space group P2 1 /m (No. 11), with a โ€ซุโ€ฌ 6.660(2), b โ€ซุโ€ฌ 5.875(2), c โ€ซุโ€ฌ 7.177(3) A s , โ€ซุโ€ฌ 114.31(2)3, and V โ€ซุโ€ฌ 255.9(2) A s 3 (R โ€ซุโ€ฌ 0.039 and R โ€ซุโ€ฌ 0.045). In this compound, the cerium-centered CeO 4 F 4 polyhedra link via Ce 2 F 2 rings to form corrugated chains along the b axis of the structure. These are tetrahedrally connected via PO 4 groups to create the three-dimensional network with a one-dimensional channel. NH ุ‰ 4 cations are accommodated at the intersection of the channels.

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