In:
European Journal of Inorganic Chemistry, Wiley, Vol. 2016, No. 7 ( 2016-03), p. 1121-1128
Abstract:
Single crystals of Sr(PO 3 F) · H 2 O { P 2 1 / c , Z = 4, a = 7.4844(2) Å, b = 7.0793(2) Å, c = 8.4265(2) Å, β = 108.696(1)°, V = 422.91(2) Å 3 , 2391 F o 2 , 70 parameters, R 1 [ F 2 〉 2σ( F 2 )] = 0.036; wR 2 ( F 2 all) = 0.049, S = 1.054} were grown from an aqueous solution by a metathesis reaction. The structure comprises [SrO 8 ] polyhedra and PO 3 F tetrahedra that form a layered arrangement parallel to (100). The topotactic dehydration of this phase proceeds between 80 and 140 °C to afford Sr(PO 3 F). The monazite‐type crystal structure of Sr(PO 3 F) was elucidated from the X‐ray powder data by simulated annealing [ P 2 1 / c , Z = 4, a = 6.71689(9) Å, b = 7.11774(11) Å, c = 8.66997(13) Å, β = 128.0063(7)°, V = 326.605(8) Å 3 , R p = 0.010, R wp = 0.015, R F = 0.030]. During dehydration, the structure of Sr(PO 3 F) · H 2 O collapses along [100] from a layered arrangement into a framework structure, accompanied by a change of the coordination number of the Sr 2+ ions from eight to nine. The magic‐angle spinning (MAS) NMR and vibrational spectroscopy data of both phases are discussed.
Type of Medium:
Online Resource
ISSN:
1434-1948
,
1099-0682
DOI:
10.1002/ejic.v2016.7
DOI:
10.1002/ejic.201501143
Language:
English
Publisher:
Wiley
Publication Date:
2016
detail.hit.zdb_id:
1475009-0
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