Syntheses and crystal structures of trigonal rare-earth dioxymonocyanamides, Ln2O2CN2 (Ln=Dy,Ho,Er,Tm,Yb)
Trigonal rare-earth dioxymonocyanamides Ln2O2CN2 (Ln=Dy,Ho,Er,Tm,Yb) were synthesized by the modified solid-state metathesis (SSM) method, in which Ln2O3 and melamine C3N6H6 were mixed and heated at 8...
Trigonal rare-earth dioxymonocyanamides Ln2O2CN2 (Ln=Dy,Ho,Er,Tm,Yb) were synthesized by the modified solid-state metathesis (SSM) method, in which Ln2O3 and melamine C3N6H6 were mixed and heated at 8...
X-ray powder diffraction analysis of a silver(I) cyclamate complex
X-ray powder diffraction data collected for the complex silver(I) cyclamate [Ag(C6H12NO3S)] are reported. This material was obtained from a stoichiometric mixture of sodium cyclamate and AgNO3. The an...
X-ray powder diffraction data collected for the complex silver(I) cyclamate [Ag(C6H12NO3S)] are reported. This material was obtained from a stoichiometric mixture of sodium cyclamate and AgNO3. The an...
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Crystal structure of dehydrated chlorartinite by X-ray powder diffraction
Powder Diffr. Volume 22, Issue 1, pp. 64-67 (March 2007)
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In the course of an investigation of cracks in certain magnesia floors containing the mineral chlorartinite [Mg2(CO3)(H2O)(OH)]Cl·H2O, the dehydration process of chlorartinite was carried out in high vacuum. The crystal structure of dehydrated chlorartinite [Mg2(CO3)(H2O)(OH)]Cl was refined from laboratory X-ray powder diffraction data using the Rietveld method [R3c, a=22.6791(5) Å, c=7.22336(14) Å, V=3217.52(11) Å3, Z=18, Rp=4.13%, Rwp=5.82%]. Dehydrated chlorartinite exhibits the same type of 3D honeycomb zeolite-like crystal structure with large channels as the hydrated form. Compared to the hydrated form, the channels of dehydrated chlorartinite are empty because of the removal of all non-coordinating water molecules with the cell volume shrinking by 4.0%, leading to a more distorted environment of the magnesium atoms.
©2007 International Centre for Diffraction Data
| History: | Received 23 October 2006; accepted 4 January 2007 |
| Permalink: | http://dx.doi.org/10.1154/1.2436546 |
