Matches in SemOpenAlex for { <https://semopenalex.org/work/W2953363072> ?p ?o ?g. }
Showing items 1 to 65 of
65
with 100 items per page.
- W2953363072 abstract "The crystal structures of M10(PO4)6X2, where M = Ca or Pb and X = OH¯, F¯, Cl¯ or Br¯, have been determined by Rietveld refinement of powder synchrotron X-ray and neutron diffraction data. All the compounds are hexagonal with space group P 63/m. For the calcium compounds, the lattice parameters are a = 9.4302(5), 9.3475(3), 9.5902(6), 9.6482(6) and c = 6.8911(2), 6.8646(1), 6.7666(2), 6.7788(2) A, for X = OH¯, F¯, Cl¯, Br¯, respectively. For the lead compounds, the corresponding lattice parameters are a = 9.8612(4), 9.7547(5), 9.9767(4), 10.0618(3) and c = 7.4242(2), 7.2832(2), 7.3255(1), 7.3592(1) A. In these compounds there are two cation sites, a channel of M(I) atoms and a triangle of M(II) atoms. The anion interacts most strongly with the M(II) atoms with the interaction dictating the position of the anion relative to the M(II) triangle. In Ca10(PO4)6X2, the F¯ ion sits within the triangle planes, while the larger OH¯ and Cl¯ anions are disordered above and below the M(II) triangles. The even larger Br¯ is midway between two triangles at (0, 0, ). Despite the larger size of the isostructural lead compounds, no anions are found in the triangles. The F¯, Cl¯ and Br¯ ions are at (0, 0, ) and the OH¯ ion is disordered at (0, 0, z). This difference in behaviour is possibly related to the lead 6s electrons. In this paper, the experimental results are presented and possible reasons for the observed differences are discussed." @default.
- W2953363072 created "2019-06-27" @default.
- W2953363072 creator A5011534082 @default.
- W2953363072 creator A5017438820 @default.
- W2953363072 creator A5047618365 @default.
- W2953363072 creator A5055996736 @default.
- W2953363072 date "2001-02-27" @default.
- W2953363072 modified "2023-09-24" @default.
- W2953363072 title "ChemInform Abstract: Powder Diffraction Studies of Synthetic Calcium and Lead Apatites." @default.
- W2953363072 cites W2071339661 @default.
- W2953363072 doi "https://doi.org/10.1002/chin.200109003" @default.
- W2953363072 hasPublicationYear "2001" @default.
- W2953363072 type Work @default.
- W2953363072 sameAs 2953363072 @default.
- W2953363072 citedByCount "0" @default.
- W2953363072 crossrefType "journal-article" @default.
- W2953363072 hasAuthorship W2953363072A5011534082 @default.
- W2953363072 hasAuthorship W2953363072A5017438820 @default.
- W2953363072 hasAuthorship W2953363072A5047618365 @default.
- W2953363072 hasAuthorship W2953363072A5055996736 @default.
- W2953363072 hasConcept C115624301 @default.
- W2953363072 hasConcept C115645028 @default.
- W2953363072 hasConcept C145148216 @default.
- W2953363072 hasConcept C178790620 @default.
- W2953363072 hasConcept C185039092 @default.
- W2953363072 hasConcept C185592680 @default.
- W2953363072 hasConcept C205188671 @default.
- W2953363072 hasConcept C73585123 @default.
- W2953363072 hasConcept C8010536 @default.
- W2953363072 hasConceptScore W2953363072C115624301 @default.
- W2953363072 hasConceptScore W2953363072C115645028 @default.
- W2953363072 hasConceptScore W2953363072C145148216 @default.
- W2953363072 hasConceptScore W2953363072C178790620 @default.
- W2953363072 hasConceptScore W2953363072C185039092 @default.
- W2953363072 hasConceptScore W2953363072C185592680 @default.
- W2953363072 hasConceptScore W2953363072C205188671 @default.
- W2953363072 hasConceptScore W2953363072C73585123 @default.
- W2953363072 hasConceptScore W2953363072C8010536 @default.
- W2953363072 hasLocation W29533630721 @default.
- W2953363072 hasOpenAccess W2953363072 @default.
- W2953363072 hasPrimaryLocation W29533630721 @default.
- W2953363072 hasRelatedWork W1883998047 @default.
- W2953363072 hasRelatedWork W1973803620 @default.
- W2953363072 hasRelatedWork W2011697236 @default.
- W2953363072 hasRelatedWork W2050338623 @default.
- W2953363072 hasRelatedWork W2051644916 @default.
- W2953363072 hasRelatedWork W2065026982 @default.
- W2953363072 hasRelatedWork W2066860886 @default.
- W2953363072 hasRelatedWork W2094576996 @default.
- W2953363072 hasRelatedWork W2111928349 @default.
- W2953363072 hasRelatedWork W2324657482 @default.
- W2953363072 hasRelatedWork W2329866027 @default.
- W2953363072 hasRelatedWork W2494077791 @default.
- W2953363072 hasRelatedWork W2735439071 @default.
- W2953363072 hasRelatedWork W2762936998 @default.
- W2953363072 hasRelatedWork W2890773331 @default.
- W2953363072 hasRelatedWork W2949713201 @default.
- W2953363072 hasRelatedWork W2950842739 @default.
- W2953363072 hasRelatedWork W2952787222 @default.
- W2953363072 hasRelatedWork W2989845537 @default.
- W2953363072 hasRelatedWork W778784037 @default.
- W2953363072 isParatext "false" @default.
- W2953363072 isRetracted "false" @default.
- W2953363072 magId "2953363072" @default.
- W2953363072 workType "article" @default.