Startseite Crystal chemistry of beryllophosphates: The crystal structure of moraesite, Be2(PO4)(OH) · 4H2O
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Crystal chemistry of beryllophosphates: The crystal structure of moraesite, Be2(PO4)(OH) · 4H2O

Veröffentlicht/Copyright: 24. August 2010
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Zeitschrift für Kristallographie - Crystalline Materials
Aus der Zeitschrift Zeitschrift für Kristallographie - Crystalline Materials Band 201 Heft 3-4

Abstract

Moraesite, Be2(PO4)(OH) · 4H2O, is a hydrated beryllophosphate mineral. The crystal structure of moraesite from Humaita, Brazil has been solved and refined in the space group C2/c, a = 8.553(6), b = 12.319(6), c = 7.155(8) Å, β = 97.93(9)°, up to R = 0.062 for 262 reflections. The structure is characterized by infinite double chains, running along c, formed by [PO4] and [BeO2(OH)H2O] tetrahedra. Within such chains three- and four-membered rings of tetrahedra occur. Additional water molecules, not linked to any cation, fill the large channels of the structure. Within each channel, the hydrogen bonds assume either of two schemes. Evidences were obtained that the true unit cell of moraesite is three times larger, with a b parameter of 36.96 Å and space group symmetry Cc. It is suggested that the ordering of the hydrogen bond system, concerted with minor adjustments of the structure, could be responsible for the triplication of the b axis.

Published Online: 2010-8-24
Published in Print: 1992-2-1

© 2015 Oldenbourg Wissenschaftsverlag GmbH, Rosenheimer Str. 145, 81671 München

Artikel in diesem Heft

  1. Crystal structure of a magnesium chloride-ethylformate adduct
  2. The crystal structure of triethylenetetramine copper(II)fluorophosphate, Cu(trien)(PF6)2
  3. Crystal structure of mesogenic material – trans-4-propyl cyclohexyl-4-(trans-4-pentyl cyclohexyl) benzoate
  4. The role of OH and H2O in oxide and oxysalt minerals
  5. Redetermination of the crystal structure of diammine silver(I)-sulfate, [Ag(NH3)2]2SO4
  6. Geometrische und chemische Koordination
  7. Reppiaite, Mn5(OH)4(VO4)2, a new mineral from Val Graveglia (Northern Apennines, Italy)
  8. Crystal structures and crystal chemistry of compounds M5−pT4+pO14*
  9. Crystal chemistry of beryllophosphates: The crystal structure of moraesite, Be2(PO4)(OH) · 4H2O
  10. Beraunite: Refinement, comparative crystal chemistry, and selected bond valences
  11. Crystal structure of thallium tetrafluoroborate, TlBF4
  12. Crystal structure of (η3-syn-crotyl)-(η4-cycloocta-1,5-diene)-nickel(II) hexafluorophosphate, Ni(C8H12)(C4H7)PF6
  13. Crystal structure of (η8-cycloocta-l,3,5,7-tetraene)-(2,2′-dipyridyl)-titanium(I) chloride, Ti(C8H8)(C10H8N2)Cl
  14. Crystal structure of (η3-syn-crotyl)-(η4-cycloocta-1,5-diene)-nickel(II) trifluormethylsulfonate, Ni(C12H19)(SO2CF3)
  15. Crystal structure of μ-hydrido-μ-dicyclohexylphosphido-octacarbonyl-dirhenium, (H)(P(C6H11)2)(CO)8Re2
  16. Crystal structure of μ-dicyclohexylphosphido-dodecacarbonyl-triangulo-trirhenium, (P(C6H11)2)(Re(CO)4)3
  17. Crystal structure of di-μ3-[(pentacarbonyl-manganese)stannio(IV)]-nonacarbonyl-triangulotriiron(Fe-Fe), (SnMn(CO)5)2Fe3(CO)9
  18. Crystal structure of calcium gold aluminium (1/1/1), CaAuAl
  19. Crystal structure of calcium gold aluminium (1/0.9/3.1), CaAu0.9Al3.1
  20. Crystal structure of barium gold gallium (1/0.3/3.7), BaAu0.3Ga3.7
  21. Crystal structure of strontium gold gallium (1/1/3), SrAuGa3
  22. Crystal structure of calcium cadmium gallium (1/0.7/1.3), CaCd0.7Ga1.3
  23. Crystal structure of strontium cadmium gallium (1/1.3/0.7), SrCd1.3Ga0.7
  24. Crystal structure of strontium cadmium gallium (1/2/2), SrCd2Ga2
  25. Crystal structure of barium cadmium gallium (1/3.2/0.8), BaCd3.2Ga0.8
  26. Crystal structure of N-diphenylphosphine-l-amino-3-(2′-pyridyl)-isoquinoline-chloropalladium(II) chloride chloroform methanol solvate, (P(C6H5)2)(C9N2H6)(C5NH4)(PdCl)Cl(CHCl3)(CH3OH)
  27. Crystal structure of μ-dicyclohexylphosphido-triphenylphosphine-octacarbonyl-triangulo-copperdirhenium, (P(C6H11)2)(CO)8Re2Cu(P(C6H5)3)
  28. Crystal structure of caesium rubidium di-μ-arsenidobis(arsenidogallate), Cs5.18Rb0.82Ga2As4
  29. Crystal structure of caesium rubidium di-μ-phosphido-bis(phosphidogallate), Cs4.95Rb1.05Ga2P4
https://doi.org/10.1524/zkri.1992.201.3-4.253

Artikel in diesem Heft

  1. Crystal structure of a magnesium chloride-ethylformate adduct
  2. The crystal structure of triethylenetetramine copper(II)fluorophosphate, Cu(trien)(PF6)2
  3. Crystal structure of mesogenic material – trans-4-propyl cyclohexyl-4-(trans-4-pentyl cyclohexyl) benzoate
  4. The role of OH and H2O in oxide and oxysalt minerals
  5. Redetermination of the crystal structure of diammine silver(I)-sulfate, [Ag(NH3)2]2SO4
  6. Geometrische und chemische Koordination
  7. Reppiaite, Mn5(OH)4(VO4)2, a new mineral from Val Graveglia (Northern Apennines, Italy)
  8. Crystal structures and crystal chemistry of compounds M5−pT4+pO14*
  9. Crystal chemistry of beryllophosphates: The crystal structure of moraesite, Be2(PO4)(OH) · 4H2O
  10. Beraunite: Refinement, comparative crystal chemistry, and selected bond valences
  11. Crystal structure of thallium tetrafluoroborate, TlBF4
  12. Crystal structure of (η3-syn-crotyl)-(η4-cycloocta-1,5-diene)-nickel(II) hexafluorophosphate, Ni(C8H12)(C4H7)PF6
  13. Crystal structure of (η8-cycloocta-l,3,5,7-tetraene)-(2,2′-dipyridyl)-titanium(I) chloride, Ti(C8H8)(C10H8N2)Cl
  14. Crystal structure of (η3-syn-crotyl)-(η4-cycloocta-1,5-diene)-nickel(II) trifluormethylsulfonate, Ni(C12H19)(SO2CF3)
  15. Crystal structure of μ-hydrido-μ-dicyclohexylphosphido-octacarbonyl-dirhenium, (H)(P(C6H11)2)(CO)8Re2
  16. Crystal structure of μ-dicyclohexylphosphido-dodecacarbonyl-triangulo-trirhenium, (P(C6H11)2)(Re(CO)4)3
  17. Crystal structure of di-μ3-[(pentacarbonyl-manganese)stannio(IV)]-nonacarbonyl-triangulotriiron(Fe-Fe), (SnMn(CO)5)2Fe3(CO)9
  18. Crystal structure of calcium gold aluminium (1/1/1), CaAuAl
  19. Crystal structure of calcium gold aluminium (1/0.9/3.1), CaAu0.9Al3.1
  20. Crystal structure of barium gold gallium (1/0.3/3.7), BaAu0.3Ga3.7
  21. Crystal structure of strontium gold gallium (1/1/3), SrAuGa3
  22. Crystal structure of calcium cadmium gallium (1/0.7/1.3), CaCd0.7Ga1.3
  23. Crystal structure of strontium cadmium gallium (1/1.3/0.7), SrCd1.3Ga0.7
  24. Crystal structure of strontium cadmium gallium (1/2/2), SrCd2Ga2
  25. Crystal structure of barium cadmium gallium (1/3.2/0.8), BaCd3.2Ga0.8
  26. Crystal structure of N-diphenylphosphine-l-amino-3-(2′-pyridyl)-isoquinoline-chloropalladium(II) chloride chloroform methanol solvate, (P(C6H5)2)(C9N2H6)(C5NH4)(PdCl)Cl(CHCl3)(CH3OH)
  27. Crystal structure of μ-dicyclohexylphosphido-triphenylphosphine-octacarbonyl-triangulo-copperdirhenium, (P(C6H11)2)(CO)8Re2Cu(P(C6H5)3)
  28. Crystal structure of caesium rubidium di-μ-arsenidobis(arsenidogallate), Cs5.18Rb0.82Ga2As4
  29. Crystal structure of caesium rubidium di-μ-phosphido-bis(phosphidogallate), Cs4.95Rb1.05Ga2P4
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