The crystal structure of β-Mg2PO4OH, a synthetic hydroxyl analogue of wagnerite
Abstract
The crystal structure of β-Mg2PO4OH (P21/c, a = 9.656(3), b = 12.859(3), c = 12.069(4) Å, β = 108.49(3)°, Z = 16) has been refined isotropically to a final R-value of 0.052 for 1863 high-angle reflections. Fairly regular PO4 tetrahedra, distorted cis-MgO4(OH)2 octahedra, and distorted MgO4(OH) trigonal bipyramids are sharing either edges or vertices to build up a complex three-dimensional network. The variation in cell parameters for the solid-solution series Mg2PO4F – Mg2PO4OH with wagnerite structure is shown graphically. There are indications of preferred substitution of OH for F in the two ‘largest’ F/OH sites. Low valence sums in the bond-strength calculation are correlated with long Mg – O distances. Hydrogen bonding is relatively weak with strongly bent O – H⋯O bonds. The infra-red spectrum is briefly discussed.
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- Orientational disorder in cubic CsNO2 by neutron powder diffraction
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- Crystal structure and chirality of sodium tetrathionate dihydrate, Na2S4O6 · 2H2O
- Crystal structure of bismuth selenochloride, BiSeCl
- Crystal growth and physical properties of l-glutamic acid halides, l-c5H9NO4 · HX (X = Cl, Br, I)
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- Crystal structure of FePO4 at 294 and 20 K
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Artikel in diesem Heft
- The crystal structure of ε-Mg2PO4OH, a synthetic high-temperature polymorph
- The crystal structure of β-Mg2PO4OH, a synthetic hydroxyl analogue of wagnerite
- Structural change of orthorhombic-I tridymite with temperature: A study based on second-order thermal-vibrational parameters
- High-order thermal-motion tensor analyses of tridymite
- The crystal structure of the room-temperature phase of AgTaO3
- The crystal structure of [(CH3)2N(CH2)2(CH2)2O]2NaAg3I6 · 2H2O*
- (Z) phényl-1 diéthylaminocarbonyl-1 aminométhyl-2 cyclopropane (Midalcipran): Etude structurale comparative des variétés Cis, Trans I et Trans II
- Crystal structure and spectra of trans-dichloro-p-chlorobenzoyldi-(2-pyridyl)ketonohydrazono antimony(III)
- Orientational disorder in cubic CsNO2 by neutron powder diffraction
- π-character of C(phenyl) – N(amide) bonds in acetanilides and C(phenyl) – C(keto) bonds in acetophenones
- Crystal structure and chirality of sodium tetrathionate dihydrate, Na2S4O6 · 2H2O
- Crystal structure of bismuth selenochloride, BiSeCl
- Crystal growth and physical properties of l-glutamic acid halides, l-c5H9NO4 · HX (X = Cl, Br, I)
- Third-order elastic constants of cubic NaBrO3, Na3SbS4 · 9H2O and NaH(CH3COO)2
- Crystal structure of FePO4 at 294 and 20 K
- Crystal structure of harstigite, MnCa6Be4[SiO4]2[Si2O7]2(OH)2
- Refinement of the crystal structure of tetraphosphorus decaoxide
- Physikalische Kristallographie“,
