Bildung von Arsensäure aus [As2Cl8]2Ionen und Ozon. Die Kristallstruktur von PPh4Cl · H3AsO4 / Formation of Arsenic Acid from [As2Cl8]2- Ions and Ozone. Crystal Structure of PPh4Cl · H3AsO4

1992 ◽  
Vol 47 (12) ◽  
pp. 1677-1680 ◽  
Author(s):  
Karin Ruhlandt-Senge ◽  
Alfred-Dirk Bacher ◽  
Ulrich Müller
Keyword(s):  
Crystal Structure ◽  
Low Temperatures ◽  
X Ray Diffraction ◽  
Arsenic Acid ◽  
Subsequent Reaction ◽  
Triclinic Space Group ◽  
Space Group ◽  
X Ray

Reaction of ozone with (PPh4)2[As2Cl8] in CH2C12 at low temperatures yields a red compound, possibly an ozonide. Upon evaporation of the solvent at –78 °C the ozone is released again. At -40 °C or above a subsequent reaction yields PPh4[AsCl6], PPh4Cl · H3AsO4, and other products. The crystal structure of PPh4Cl · H3AsO3 was determined by X-ray diffraction (4253 observed reflexions, R = 0.031). It is triclinic, space group P1̅, and consists of H3AsO4 molecules joined to dimer units via H bridges and associated via O–H · · · Cl- bridges to strands. The packing of the PPh4+ ions is discussed. Products of the reaction of (PPh4)2[Sb2Cl8] with ozone in CH2C12 are PPh4[SbCl6] and (PPh4)2[SbOCl4]2 · 2 CH2Cl2.

Synthese und Kristallstruktur von l,13-Bis(8-chinolyl)- 1,4,7,10,13-pentaoxatridecan-diquecksilber(I)-diperchlorat

1991 ◽  
Vol 46 (1) ◽  
pp. 1-4 ◽  
Author(s):  
Klaus Brodersen ◽  
Jörg Zimmerhackl
Keyword(s):  
Crystal Structure ◽  
Aqueous Solution ◽  
X Ray Diffraction ◽  
Triclinic Space Group ◽  
Space Group ◽  
X Ray ◽  
R Value ◽  
Torsional Angles ◽  
L 13 ◽  
Oxygen Atoms

1,13-Bis(8-quinolyl)-1,4,7,10,13-pentaoxatridecane-dimercury(I)-diperchlorate is formed by the reaction of 1,13-bis(8-quinolyl)-1,4,7,10,13-pentaoxatridecane in ethanol with an aqueous solution of dimercury(I)-diperchlorate.It crystallizes in the triclinic space group P Ī with a = 1020.6(2), b = 1200.6(8), c = 1441.1(6) pm , α = 69.60(5)°, β = 83.04(13)°, y = 66.53(4)° and Z = 2. The crystal structure was determined by X -ray diffraction and refined to an R-value o f 0.079. The Hg22+ -ion is coordinated to both nitrogen atoms and four oxygen atoms of one molecule of the ligand. By changing four C - O torsional angles from trans to gauche, the ligand adopts a helical, chiral configuration around the Hg22+-ion. The CIO4--ions are not coordinated to the Hg22+-ion.

Crystal structure and thermal expansion of hexakis(phenylthio)benzene and its CBr4 clathrate

1995 ◽  
Vol 73 (4) ◽  
pp. 513-521 ◽  
Author(s):  
Darek Michalski ◽  
Mary Anne White ◽  
Pradip K. Bakshi ◽  
T. Stanley Cameron ◽  
Ian Swainson
Keyword(s):  
Crystal Structure ◽  
Thermal Expansion ◽  
Neutron Powder Diffraction ◽  
X Ray Diffraction ◽  
Triclinic Space Group ◽  
Space Group ◽  
X Ray ◽  
Temperature Range ◽  
Thermal Expansion Coefficients ◽  
Expansion Coefficients

The crystal structures of hexakis(phenylthio)benzene (HPTB) and its CBr4 clathrate have been determined by single crystal X-ray diffraction data collected at T = 18 °C and refined to final Rw of 0.036 and 0.047, respectively. Pure HPTB is triclinic, space group [Formula: see text] (No. 2), with a = 9.589(2) Å, b = 10.256(1) Å, c = 10.645(2) Å, α = 68.42(1)°, β = 76.92(2)°, γ = 65.52(1)°, and Z = 1. The CBr4 clathrate of HPTB is rhombohedral, space group [Formula: see text] (No. 148), with a = 14.327(4) Å, b = 20.666(8) Å, and Z = 3. The host–guest mole ratio of HPTB–CBr4 is 1:2. Neutron powder diffraction was carried out on powders of both compounds in the temperature range 25 K < T < 295 K. Thermal expansion coefficients were determined for HPTB and HPTB–CBr4 over this temperature range. Keywords: thermal expansion, crystal structure, clathrate.

The Structure of the Tetranuclear Cubane-Like Nickel(II) Xanthate Alkoxide [Ni(C2H5OCS2)-(C5H4NCH2O)]4 as Its Acetone Solvate, an Example of a Non-Reversible Inclusion Compound

1986 ◽  
Vol 39 (7) ◽  
pp. 1035 ◽  
Author(s):  
K Bizilj ◽  
SG Hardin ◽  
BF Hoskins ◽  
PJ Oliver ◽  
ERT Tiekink ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Inclusion Compound ◽  
Mixed Ligand ◽  
X Ray Diffraction ◽  
Triclinic Space Group ◽  
Space Group ◽  
X Ray ◽  
Oxygen Atoms

The crystal structure of the acetone solvate of a mixed ligand tetranuclear nickel(II) complex involving the pyridine-2-methoxide ( pym ) and 0-ethylxanthate (exa) anions has been determined by X-ray diffraction methods. Crystals of [Ni (exa)( pym )]4.Me2CO are triclinic, space group Pī , a 13.825(2), b 15.606(3), c 12.288(2)Ǻ, α 101.16(2), β 101.38(1), γ 85.80(1)°, with Z 2; R and Rw were 0.056 and 0.057 respectively for 4,771 unique reflections for which I ≥ 3σ(I). The structure consists of tetranuclear cubane -like clusters with four nickel and four oxygen atoms arranged at alternate corners of a distorted cube. The discrete molecules of occluded acetone are located in cavities defined by the [Ni( exa )( pym )]4 units.

Reactions between Co(II), 1,2-bis(diphenylphosphino)ethane, and NaBH3CN in the presence and absence of CO. The crystal structure of bis(cyanotrihydroborato)tetrakis(N,N-dimethylformamide)cobalt(II)

1988 ◽  
Vol 66 (7) ◽  
pp. 1770-1775 ◽  
Author(s):  
David J. Elliot ◽  
Sanna Haukilahti ◽  
David G. Holah ◽  
Alan N. Hughes ◽  
Stanislaw Maciaszek ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Single Crystal ◽  
Unit Cell ◽  
X Ray Diffraction ◽  
Unit Cell Parameters ◽  
Triclinic Space Group ◽  
Space Group ◽  
X Ray ◽  
Cell Parameters ◽  
R Factor

Reactions between Co(II), Diphos, and NaBH3CN lead to Co(BH3CN)2(Diphos)2, 1, or [Co(BH3CN)(Diphos)2]X, 2 (X = ClO4 or BPh4), and, in certain solvents, 2 reacts to produce [Co(CN)(Diphos)2](ClO4). Compound 1 can be reversibly converted to Co(BH3CN)2(DMF)4, 4, via Co(BH3CN)2(Diphos)(DMF). In addition, 1 reacts with CO to form the Co(I) and Co(III) compounds [Co(Diphos)2](CO)]X and [Co(Diphos)2(CN)2]X (X = BH3CN or BPh4). Single crystal X-ray diffraction studies of 4 show that the compound crystallizes in the triclinic space group [Formula: see text], with unit cell parameters a = 7.572(6), b = 9.695(6), c = 9.395(6) Å, α = 81.06(4), β = 68.46(5), γ = 68.19(5)°, V = 595.5 Å3, Z = 1, and dcalcd = 1.202 g cm−3. The structure converged to a conventional R factor of 0.040 for 2841 observations and showed an octahedral arrangement of four O atoms from DMF molecules and two trans N-bound BH3CN groups around the Co(II) center.

scholarly journals Synthesis, Crystal Structure, and Fungicidal Activity of 5-(4-cyclopropyl-5-((3-fluorobenzyl)thio)-4H-1,2,4-triazol-3-yl)-4-methyl-1,2,3-thiadiazole

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Xing-Hai Liu ◽  
Jian-Quan Weng ◽  
Cheng-Xia Tan
Keyword(s):  
Crystal Structure ◽  
Single Crystal ◽  
Title Compound ◽  
Fungicidal Activity ◽  
Herbicidal Activity ◽  
X Ray Diffraction ◽  
Triclinic Space Group ◽  
Space Group ◽  
X Ray ◽  
Compound C

A new 1,2,3-thiadiazole compound was synthesized and characterized. The crystal structure of the title compound (C15H14FN5S2, Mr = 347.43) has been determined by single-crystal X-ray diffraction. The crystal is of triclinic, space group P-1 witha=7.0490(14),b=9.0212(18),c=12.799(3) Å,α= 89.97(3)°,β= 82.27(3)°,γ= 73.17(3)°,V= 771.3(3)  Å3, Z = 2, F(000) = 360, Dc = 1.496 g/cm3,μ= 0.036 mm−1, the finalR1= 0.0358, andwR2= 0.0986 for 2204 observed reflections withI>2σ(I). A total of 5697 reflections were collected, of which 2719 were independent (Rint=0.0028). The herbicidal activity of title compound was determined; the results showed that the title compound displayed excellent fungicidal activity.

Die Kristallstruktur des Tetraphenylphosphonium-Monoiodohexahydroc/ oso-Hexaborats [P(C6H5)4][B6H6I] / The Crystal Structure of Tetraphenylphosphonium Monoiodohexahydro-closo-hexaborate [P(C6H5)4][B6H6I]

1994 ◽  
Vol 49 (12) ◽  
pp. 1809-1812 ◽  
Author(s):  
W. Preetz ◽  
D. Sonnak
Keyword(s):  
Crystal Structure ◽  
Single Crystal ◽  
Diffraction Analysis ◽  
X Ray Diffraction ◽  
Triclinic Space Group ◽  
Space Group ◽  
X Ray

The crystal structure of [P(C6H5)4][B6H6I] has been determined by single crystal X-ray diffraction analysis; triclinic, space group P1 with a = 7.5137(9), b = 12.623(2), c = 13.6363(13) Å, α = 87.787(13)°, β = 83.836(13)°, γ = 88.156(10)°. The additional H atom could be refined with B-H distances of 1.13 to 1.31 A above one of the facettes of the B6 octahedron opposite to the I substituent.

Cyclothiazeno-Vanadiumdibromid, VBr2(N3S2) / Cyclo-Thiazeno Vanadium Dibromide, VBr2(N3S2)

1985 ◽  
Vol 40 (11) ◽  
pp. 1457-1462 ◽  
Author(s):  
Jürgen Hanich ◽  
Wolfgang Willing ◽  
Ulrich Müller ◽  
Kurt Dehnicke
Keyword(s):  
Crystal Structure ◽  
Nmr Spectra ◽  
Crystal Data ◽  
X Ray Diffraction ◽  
Triclinic Space Group ◽  
Space Group ◽  
X Ray

VBr2(N3S2) was synthesized by reaction of VCl2(N3S2) with Me3SiBr. It reacts with PPh4Br in dibromomethane solution to form (PPh4)2[VBr3(N3S2)]2. The compounds were characterized by their IR and 51V NMR spectra. The crystal structure of VBr2(N3S2) was determined by X-ray diffraction (2060 reflexions. R = 0.114). Crystal data: triclinic, space group P1̄, a = 586.4, b = 794.2, c = 744.6 pm. α - 89.25, β - 108.58, γ = 99.67°. Z = 2. The vanadium atoms form planar, six-membered rings wjith the N3S2 groups, with short VN distances (172 and 185 pm). Bromine- bridged dimers are associated via V−N links to form chains in a similar way as in some tetrahalides. The structure is similar to that of VCl2(N3S2), but the chains are rotated by 17° along their axes.

Synthese und Kristallstruktur von Bis(m-aminobenzonitril)- diquecksilber(I)-dinitrat/Synthesis and Crystal Structure of Bis(m-aminobenzonitrile)dimercury(I)-dinitrate

1992 ◽  
Vol 47 (4) ◽  
pp. 460-464 ◽  
Author(s):  
Klaus Brodersen ◽  
Jürgen Hofmann
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Single Crystal ◽  
Amino Nitrogen ◽  
X Ray Diffraction ◽  
Triclinic Space Group ◽  
Synthesis And Crystal Structure ◽  
Space Group ◽  
X Ray

The structure of bis(m-aminobenzonitrile)dimercury(I) dinitrate, [Hg2(m -NH2C6H4CN)2](NO3)2 has been determined by single crystal X-ray diffraction techniques and refined to an Rw-value of 0.022. The crystals are triclinic, space group P1 with a = 5.4878(1) Å, b = 8.4085(1) Å, c = 9.6062(1) Å, α = 92.599(3)°, β = 94.763(3)°, γ = 89.614(3)° and Z = 1.The Hg22+-ion [Hg-Hg 2.524(1) Å] is approximately axially coordinated to amino nitrogen atoms [Hg - N 2.209(4) Å, Hg - Hg - N 169.5(3)°]. Additional amino hydrogen bonds to oxygen are building chains along the b-axis containing units of L - Hg - Hg - L groups.

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

Tetraphenylphosphonium-ikosioctabromooctaantimonat(III), (PPh4)4Sb8Br28 / Tetraphenylphosphonium Ikosioctabromooctaantimonate(III), (PPh4)4Sb8Br28

1996 ◽  
Vol 51 (9) ◽  
pp. 1245-1247 ◽  
Author(s):  
Wolfgang Fachbereich Biologie-Chemie, Univer ◽  
Ulrich Fachbereich Biologie-Chemie, Univer
Keyword(s):  
Crystal Structure ◽  
Title Compound ◽  
Crystal Data ◽  
X Ray Diffraction ◽  
Triclinic Space Group ◽  
Space Group ◽  
X Ray ◽  
Distorted Octahedral Coordination ◽  
Closest Packing ◽  
Distorted Octahedral

The title compound was obtained by the reaction of PPh4Br, Sb2Se3, and bromine in dichloromethane. Its crystal structure was determined by X-ray diffraction. Crystal data: a = 1249.1(2), b = 1307.8(2), c = 2152.3(4) pm, α = 102.93(2), β = 100.83(2), γ = 100.42(2)°, Z = 2, triclinic, space group P1̄. (PPh4)4Sb8Br28 is isotypic with (PPh4)4Sb8I28. The Sb8Br284- ion can be taken as the association product of eight SbBr3 molecules with four Br− ions. Each Sb atom has a distorted octahedral coordination with three shorter (252 to 274 pm) and three longer (300 to 353 pm) Sb-Br bonds. The octahedra share common edges in two parallel rows of four octahedra each. The arrangement of the 28 bromine atoms corresponds to a section of a closest packing of spheres.

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