The preparation and characterisation of Sb3Cl11F4

1977 ◽  
Vol 55 (5) ◽  
pp. 743-748 ◽  
Author(s):  
Jack G. Ballard ◽  
Thomas Birchall ◽  
David R. Slim
Keyword(s):  
Crystal Structure ◽  
Title Compound ◽  
Mössbauer Spectra ◽  
Three Dimensional ◽  
Chlorine Atoms ◽  
Space Group ◽  
X Ray ◽  
Mossbauer Spectra ◽  
Final Agreement

The title compound has been prepared by the reaction of SbF5 and SbCl5 in liquid SO2. Raman and Mössbauer spectra have been recorded and its crystal structure determined by three-dimensional X-ray counter measurements. Crystals are monoclinic with a = 12.359(6) Å, b = 16.480(10) Å, c = 9.387(3) Å, β = 103.96(5)°. The structure has been refined in the space group P21/n to a final agreement index R2 of 0.113 for 2415 independent reflections. The structure consists of a cis fluorine-bridged trimer with one of the chlorine atoms 25% substituted by fluorine.

Crystal structure and spectra of the mixed-ligands complex 1-(2-thenoyl)-2-(2,2′-dipyridyl methylene)hydrazino-acetato lead (II)

1994 ◽  
Vol 209 (12) ◽  
Author(s):  
P. C. Christidis ◽  
I. A. Tossidis ◽  
C. A. Hondroudis
Keyword(s):  
Crystal Structure ◽  
Diffraction Data ◽  
Title Compound ◽  
Three Dimensional ◽  
X Ray Diffraction ◽  
Triclinic Space Group ◽  
Space Group ◽  
X Ray ◽  
Mixed Ligands

AbstractThe crystal structure of the title compound has been determined from three-dimensional X-ray diffraction data. The crystals are triclinic, space group

Notizen: Kristallstruktur von [Cu4OCl6(CH3CN)4] · 2 CH3CN / Crystal Structure of [Cu4OCl6(CH3CN)4] · 2 CH3CN

1990 ◽  
Vol 45 (11) ◽  
pp. 1593-1596 ◽  
Author(s):  
Wolfgang Hiller ◽  
Alfred Zinn ◽  
Kurt Dehnicke
Keyword(s):  
Crystal Structure ◽  
Oxygen Atom ◽  
Structure Determination ◽  
Ir Spectrum ◽  
Copper Atom ◽  
Title Compound ◽  
Chlorine Atoms ◽  
Space Group ◽  
X Ray ◽  
Distorted Trigonal Bipyramid

The title compound has been prepared by the reaction of CuCl, with hexakis(trimethylsilyl)-benzdiamidine, in boiling acetonitrile in the presence of traces of water, as brown crystals, which were characterized by their IR spectrum as well as by an X-ray structure determination. Space group C 2/c, Z = 4, 2668 observed unique reflexions, R = 0.036. Lattice dimensions at –65 C: a = 879.5(2), b = 2441.1(3), c = 1241.4(3) pm, β = 95.24(3)°. In the structure four copper atoms surround an oxygen atom in a slightly distorted tetrahedral fashion; the chlorine atoms bridge adjacent copper atoms, and each copper atom is thus bound to three chlorine atoms. The nitrogen atoms of the acetonitrile complete the slightly distorted trigonal bipyramid around the copper atoms.

Crystal structure of biphenylenyliodonium[bis(phenylsulphonyl)] methylsulphonylmethylide, C28H21IO6S3

1994 ◽  
Vol 209 (6) ◽  
Author(s):  
A. P. Bozopoulos ◽  
C. A. Kavounis ◽  
G. A. Stergioudis ◽  
P. J. Rentzeperis ◽  
A. Varvoglis
Keyword(s):  
Molecular Structure ◽  
Crystal Structure ◽  
Least Squares ◽  
Title Compound ◽  
Crystal And Molecular Structure ◽  
Three Dimensional ◽  
Triclinic Space Group ◽  
Space Group ◽  
X Ray ◽  
Computer Controlled

AbstractThe crystal and molecular structure of the title compound (BPIS hereafter) has been determined from three-dimensional X-ray data, measured on a computer-controlled STOE AED 2 diffractometer. The structure is triclinic Space groupThe structure was solved by Patterson and Fourier syntheses and refined by least-squares calculations to a finalTwo I-C

Crystal structure determination of the conformation of two bicyclo[3.3.1]nonan-ones

1985 ◽  
Vol 63 (6) ◽  
pp. 1166-1169 ◽  
Author(s):  
John F. Richardson ◽  
Ted S. Sorensen
Keyword(s):  
Crystal Structure ◽  
Direct Methods ◽  
Chair Conformation ◽  
Molecular Structures ◽  
Boat Conformation ◽  
X Ray Diffraction ◽  
Space Group ◽  
X Ray ◽  
Final Agreement

The molecular structures of exo-7-methylbicyclo[3.3.1]nonan-3-one, 3, and the endo-7-methyl isomer, 4, have been determined using X-ray-diffraction techniques. Compound 3 crystallizes in the space group [Formula: see text] with a = 15.115(1), c = 7.677(2) Å, and Z = 8 while 4 crystallizes in the space group P21 with a = 6.446(1), b = 7.831(1), c = 8.414(2) Å, β = 94.42(2)°, and Z = 2. The structures were solved by direct methods and refined to final agreement factors of R = 0.041 and R = 0.034 for 3 and 4 respectively. Compound 3 exists in a chair–chair conformation and there is no significant flattening of the chair rings. However, in 4, the non-ketone ring is forced into a boat conformation. These results are significant in interpreting what conformations may be present in the related sp2-hybridized carbocations.

Structure of 3α,4α:5β,6β-Diepoxyandrostan-17-one

1983 ◽  
Vol 36 (11) ◽  
pp. 2333 ◽  
Author(s):  
B Kamenar ◽  
RA Pauptit ◽  
JM Waters
Keyword(s):  
Crystal Structure ◽  
Title Compound ◽  
Direct Methods ◽  
Monoclinic Space Group ◽  
Space Group ◽  
X Ray

The X-ray crystal structure of 3α,4α:5β,6β-diepoxyandrostan-17-one has been determined. Crystals of the title compound (C19H26O3)are monoclinic, space group P21, with a 9.208(2), b 9.620(4), c 9.312(3) �, β 99.14(2)�, V 814.5 Ǻ3 and Z 2. The structure was solved by direct methods and refined to R 0.039 for 887 observed reflexions. The 3α,4α:5β,6β configuration of the epoxide rings confirms the assignment based on proton n.m.r. studies.

The crystal structure of gersdorffite (III), a distorted and disordered pyrite structure

1968 ◽  
Vol 36 (283) ◽  
pp. 940-947 ◽  
Author(s):  
P. Bayliss ◽  
N. C. Stephenson
Keyword(s):  
Crystal Structure ◽  
Metal Atom ◽  
Diffraction Data ◽  
Three Dimensional ◽  
Unit Cell ◽  
X Ray Diffraction ◽  
Space Group ◽  
X Ray ◽  
Partially Ordered ◽  
The Ideal

SummaryThe crystal structure of gersdorffite (III) has been examined with three-dimensional Weissenberg X-ray diffraction data. The unit cell is isometric with a 5·6849 ± 0·0003 Å, space group PI, and four formula units per cell. This structure has the sulphur and arsenic atoms equally distributed over the non-metal atom sites of pyrite. All atoms show significant random displacements from the ideal pyrite positions to produce triclinic symmetry, which serves to distinguish this mineral from a disordered cubic gersdorffite (II) and a partially ordered cubic gersdorffite (I). Factors responsible for the atomic distortions are discussed.

Über das Erdalkalimetall-Lanthanoid-Kupfer-Oxomolybdat (Cu0,22Mg0 ,78)BaNd2Mo4O16/The Alkaline Earth Rare Earth Copper-Oxomolybdate (Cu0.22Mg0.78)BaNd2Mo4O16

1995 ◽  
Vol 50 (4) ◽  
pp. 577-580 ◽  
Author(s):  
H. Szillat ◽  
Hk. Müller-Buschbaum
Keyword(s):  
Crystal Structure ◽  
Rare Earth ◽  
Single Crystals ◽  
Alkaline Earth ◽  
Three Dimensional ◽  
Space Group ◽  
X Ray ◽  
Ray Methods

Single crystals of (Cu0.22Mg0.78)BaNd2Mo4O16 have been prepared by crystallization from melts and investigated by X-ray methods. The compound crystallizes monoclinically, space group C62h - C12/c1, Z = 4, a = 5.351(1), b = 12.891(2), c = 19.391(4) Å,β = 90.899(14)° and is isotypic to CuKHo2Mo4O16. The crystal structure is dominated by BaO10 and NdO8 polyhedra forming a three-dimensional polyhedra network, which is filled by axially distorted (Cu,Mg)O6 octahedra and MoO4 tetrahedra.

The X-Ray Crystal Structure of 1,2-3,4-Di-O-isopropylidene-4-C-methylthiomethoxy-β-L-arabino-hexoseptanos-5-ulose

1990 ◽  
Vol 43 (12) ◽  
pp. 2083 ◽  
Author(s):  
DC Craig ◽  
VJ James ◽  
JD Stevens
Keyword(s):  
Crystal Structure ◽  
Title Compound ◽  
Membered Ring ◽  
Boat Conformation ◽  
X Ray Diffraction ◽  
Orthorhombic Space Group ◽  
Space Group ◽  
X Ray

The crystal structure of the title compound (1) has been determined by X-ray diffraction. Crystals of (1) are orthorhombic, space group P21212 with a 11.425(1), b 24.916(1), c 5.8952(3)Ǻ, Z 4. Refinement on 1675 observed reflections measured with Cu Kα radiation converged at R 0.034. The seven- membered ring adopts a boat conformation in which the pseudo plane of symmetry passes through the ring oxygen.

Crystal and Molecular Structure of 3-Iodo-2-propynyl-N-butylcarbamate

1997 ◽  
Vol 52 (2) ◽  
pp. 256-258 ◽  
Author(s):  
Evgeni V. Avtomonov ◽  
Rainer Grüning ◽  
Jörg Lorberth
Keyword(s):  
Molecular Structure ◽  
Crystal Structure ◽  
Title Compound ◽  
Crystal And Molecular Structure ◽  
Three Dimensional ◽  
X Ray Diffraction ◽  
X Ray ◽  
Dimensional Network ◽  
Carbamate Group ◽  
Oxygen Atoms

Abstract The crystal structure of the title compound has been determined by X-ray diffraction methods. Due to the Lewis acidic character of the iodine substituent a “zig-zag” chain is formed via intermolecular interactions (2.933(4) A) between iodine and oxygen atoms of theocarbamate moiety. A three-dimensional network is formed through hydrogen-bridging (2.04 A) between NH-groups and the oxygen atoms of the neighbouring carbamate group of the next molecule.

Preparation and X-Ray Crystal-Structure of 4,4'-Triselenobis(pent-3-en-2-one)

1988 ◽  
Vol 41 (10) ◽  
pp. 1601 ◽  
Author(s):  
AP Arnold ◽  
KJ Cavell ◽  
AJ Edwards ◽  
BF Hoskins ◽  
EJ Peacock
Keyword(s):  
Crystal Structure ◽  
Title Compound ◽  
Selenium Atom ◽  
Hydrogen Selenide ◽  
Unusual Structure ◽  
Coordination Environment ◽  
Space Group ◽  
X Ray ◽  
X Ray Crystallography ◽  
Sodium Hydrogen

The title compound was prepared by the reaction of sodium hydrogen selenide with 4-chloropent-3-en-2-one. The compound appears unstable with respect to higher oligomers of the SeC (CH3)CHC(CH3)O ( seacac ) unit. X-ray crystallography reveals the unusual structure in which a central 'complexed' selenium atom is coordinated to the two selenium atoms of the seacac ligands which are in their normal cis conformations. The oxygen atoms are uncoordinated and as far removed from the coordination environment of the central selenium atom as possible. Crystals of Se( seacac )2 are orthorhombic with space group P21212, and cell dimension a 9.761(2), b 14.828(3) and c 4.6447(5)Ǻ.

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