ChemInform Abstract: Synthesis and Crystal Structure of δ-GeS2, the First Germanium Sulfide with an Expanded Framework Structure.

ChemInform ◽  
2010 ◽  
Vol 29 (44) ◽  
pp. no-no
Author(s):  
M. J. MACLACHLAN ◽  
S. PETROV ◽  
R. L. BEDARD ◽  
I. MANNERS ◽  
G. A. OZIN
Keyword(s):  
Crystal Structure ◽  
Framework Structure ◽  
Synthesis And Crystal Structure ◽  
Germanium Sulfide

The Stuffed Framework Structure of SrP2N4: Challenges to Synthesis and Crystal Structure Determination

2007 ◽  
Vol 13 (24) ◽  
pp. 6841-6852 ◽  
Author(s):  
Friedrich W. Karau ◽  
Lena Seyfarth ◽  
Oliver Oeckler ◽  
Jürgen Senker ◽  
Kai Landskron ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Structure Determination ◽  
Crystal Structure Determination ◽  
Framework Structure ◽  
Synthesis And Crystal Structure

Synthesis and crystal structure of a new microporous silicate with a mixed octahedral-tetrahedral framework: Cs3ScSi8O19

2004 ◽  
Vol 68 (4) ◽  
pp. 677-686 ◽  
Author(s):  
U. Kolitsch ◽  
E. Tillmanns
Keyword(s):  
Crystal Structure ◽  
Structure Type ◽  
Framework Structure ◽  
X Ray Diffraction ◽  
Orthorhombic Space Group ◽  
Tetrahedral Framework ◽  
Synthesis And Crystal Structure ◽  
X Ray ◽  
Open Framework ◽  
Area Detector

AbstractDuring investigations of the system Sc2O3-Al2O3-TiO2-SiO2, a new, unusual microporous compound, Cs3ScSi8O19, was synthesized as colourless plates from a CsF-MoO3 flux. The crystal structure was determined from single-crystal X-ray diffraction data (Mo-Kα radiation, CCD area detector). The compound is orthorhombic, space group Pnma, with a = 11.286(2), b = 7.033(1), c = 26.714(5) Å, and Z = 4 (R1(F) = 2.6% and wR2all(F2) = 7.3%, using 3066 ‘observed’ reflections with Fo > 4σ(Fo)). The crystal structure of Cs3ScSi8O19 represents a new microporous framework structure type (‘MCV-1’), and the compound is exceptional in being the first representative of a mixed octahedral-tetrahedral framework structure, in which the [TO4]:[MO6] ratio is >6:1. The structure is based on isolated, nearly regular ScO6 octahedra [dav(Sc—O) = 2.112 Å] sharing corners with SiO4 tetrahedra to form an open framework with four-, six- and eight-membered rings; the latter are formed by SiO4 tetrahedra only. Two fully occupied Cs positions are located in large framework voids close to the six-membered rings, whereas four partly occupied and disordered Cs positions are close to very large framework voids bordered by the puckered eight-membered rings. The cavities are linked into channels parallel to [100] and [010]. The structure is compared with that of Cs2TiSi6O15 and related microporous scandium-, REE-, titano- and zirconosilicate minerals and compounds. Cs3ScSi8O19 or derivatives may be important in the context of immobilization of radioactive 137Cs waste, cationic conductivity or catalysis.

The Stuffed Framework Structure of SrP2N4: Challenges to Synthesis and Crystal Structure Determination.

ChemInform ◽  
2007 ◽  
Vol 38 (44) ◽  
Author(s):  
Friedrich W. Karau ◽  
Lena Seyfarth ◽  
Oliver Oeckler ◽  
Juergen Senker ◽  
Kai Landskron ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Structure Determination ◽  
Crystal Structure Determination ◽  
Framework Structure ◽  
Synthesis And Crystal Structure

Synthesis and crystal structure of [MnL(μ-Cl)MnCl3]·H2O L=N, N'-bis(2'-pyridine)methyl-1,10-phenanthroline-2,9-dimethanamine

2002 ◽  
Vol 2002 (3) ◽  
pp. 120-121
Author(s):  
Tian Fu Liu ◽  
Hua Kuan Lin ◽  
Shou Rong Zhu ◽  
Zhong Ming Wang ◽  
Hong Gen Wang ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Synthesis And Crystal Structure

Synthesis and crystal structure of an 18-Mo girdle-like polyoxomolybdate

2002 ◽  
Vol 2002 (3) ◽  
pp. 107-109 ◽  
Author(s):  
Guang Liu ◽  
Jian Liu ◽  
Shi-Wei Zhang
Keyword(s):  
Crystal Structure ◽  
Synthesis And Crystal Structure
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