Synthesis and characterization of low-OH fluor-chlorapatite: A single-crystal XRD and NMR spectroscopic study
作者： F. M. McCubbin , H. E. Mason , H. Park , B. L. Phillips , J. B. Parise
DOI: 10.2138/AM.2008.2557
关键词:
摘要: Low-OH apatite of the compositional range Ca4.99-5.06(PO4)2.98-3.00F0.51-0.48Cl0.38-0.36OH0.14-0.12 was syn- thesized and characterized structurally by synchrotron-based single-crystal X-ray diffraction (XRD), multiple nuclear magnetic resonance (NMR) spectroscopic techniques. The average structure is hexagonal with space group P63/m. presence scattering in data set, which incommensurate within structure, suggests localized short-range monoclinic domains. Complex lineshapes 31 P 19 F MAS NMR spectra are also consistent an phase. No evidence detected for splitting Ca2 site into two distinct sites (as had been previously reported ternary apatites). Structure refinement F{ 35
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