scholarly journals (AsPh4)4[CrCl4(μ-N2S2)]4 · 8 CH2Cl2; Synthese, IR-Spektrum und Kristallstruktur / (AsPh4)4[CrCl4(μ-N2S2)]4 · 8 CH2Cl2; Synthesis, IR Spectrum and Crystal Structure

1985 ◽  
Vol 40 (10) ◽  
pp. 1314-1319 ◽  
Author(s):  
Heribert Wadle ◽  
Kurt Dehnicke ◽  
Dieter Fenske
Keyword(s):  
Crystal Structure ◽  
Major Product ◽  
X Ray ◽  
Lattice Constants ◽  
Chromium Hexacarbonyl ◽  
Distorted Octahedral Coordination ◽  
Chromium Vi ◽  
Distorted Octahedral ◽  
Tetraphenylarsonium Chloride ◽  
Crystal Structural

Trithiazylchloride, (NSCl)3, reacts with metallic chromium, with chromium hexacarbonyl, with CrCl3·3 thf, as well as with chromium(VI) oxide to form mixtures, in which S4N3⊕ [CrCl4(N2S2)]⊖ can be identified as the major product. This compound reacts with tetraphenylarsonium chloride in dichloromethane to form the title compound, which we have characterized by IR spectroscopy and an X-ray crystal structural analysis. (AsPh4)4[CrCl4(N2S2)]4·8 CH2Cl2 crystallizes monoclinically in the space group C2/c with four formula units per unit cell and with the following lattice constants at -100 °C: a = 2146, b = 2033, c = 3137 pm; β = 96.0° (9918 independent observed reflexions, R = 0.064). The compound consists of AsPh4⊕ ions, tetrameric anions [CrCl4(N2S2)]44⊖ and included CH2Cl2 molecules. The chromium atoms of the anions occupy the corners of a nearly ideal square; they are connected via the N-atoms of planar N2S2-rings, which are oriented perpendicularly to the Cr4-plane. The chromium atoms complete their distorted octahedral coordination with four terminal chlorine atoms, the axial ones of which form short Cl···S-contacts of average 310 pm to the S-atoms of the N2S2-rings.

S5N5[SnCl5(CH3CN)]; Synthese, IR-Spektrum, 119Sn-Mößbauer-Spektrum und Kristallstruktur / S5N5[SnCl5(CH3CN)]; Synthesis, IR Spectrum , Mössbauer Spectrum and Crystal Structure

1986 ◽  
Vol 41 (10) ◽  
pp. 1191-1195 ◽  
Author(s):  
Ute Patt-Siebel ◽  
Somluck Ruangsuttinarupap ◽  
Ulrich Müller ◽  
Jürgen Pebler ◽  
Kurt Dehnicke
Keyword(s):  
Crystal Structure ◽  
Structure Determination ◽  
Ir Spectrum ◽  
Bond Angle ◽  
Mossbauer Spectrum ◽  
Monoclinic Space Group ◽  
Mössbauer Spectrum ◽  
X Ray ◽  
Distorted Octahedral Coordination ◽  
Distorted Octahedral

S5N5[SnCl5(CH3CN)] is prepared by the reaction of SnCl2 with trithiazyl chloride in acetonitrile suspension. The compound is characterized by its IR spectrum, the 119Sn Mössbauer spectrum and by an X-ray crystal structure determination (1851 observed, independent reflexions, R = 0.024). S5N5[SnCl5(CH3CN)] crystallizes in the monoclinic space group P21/n with Z = 4 and the lattice dimensions a = 758.8; b = 1574.6; c = 1429.1 pm; β = 97.65°. The compound consists of planar S5N5® cations with the azulene-like structure, and anions [SnCl5(CH3CN)]e in which the tin atom has a distorted octahedral coordination. The bond angle Sn-N ≡ C (168°) is surprisingly small.

scholarly journals Crystal structure of cis-(1,4,8,11-tetraazacyclotetradecane-κ4 N)bis(thiocyanato-κN)chromium(III) bromide from synchrotron X-ray diffraction data

2021 ◽  
Vol 77 (3) ◽  
pp. 222-225
Author(s):  
Dohyun Moon ◽  
Jong-Ha Choi
Keyword(s):  
Crystal Structure ◽  
Complex Cation ◽  
Title Complex ◽  
Asymmetric Unit ◽  
X Ray Diffraction ◽  
Intermolecular Hydrogen Bonds ◽  
X Ray ◽  
Bromide Anion ◽  
Distorted Octahedral Coordination ◽  
Distorted Octahedral

The crystal structure of the title complex, cis-[Cr(NCS)2(cyclam)]Br (cyclam = 1,4,8,11-tetraazacyclotetradecane, C10H24N4), has been determined from synchrotron X-ray data. The asymmetric unit contains one [Cr(NCS)2(cyclam)]+ cation and one bromide anion. The CrIII ion of the complex cation is coordinated by the four N atoms of the cyclam ligand and by two N-coordinating NCS groups in a cis arrangement, displaying a distorted octahedral coordination sphere. The Cr—N(cyclam) bond lengths are in the range 2.075 (3) to 2.081 (3) Å while the average Cr—N(NCS) bond length is 1.996 (16) Å. The macrocyclic cyclam moiety adopts the most stable cis-V conformation. The crystal structure is stabilized by intermolecular hydrogen bonds involving the cyclam N—H groups as donor groups, and the bromide anion and the S atom of one of the NCS ligands as acceptor groups.

Notizen: Die Kristallstruktur von MgCl2(1,2-Dimethoxyethan)2 / Crystal Structure of MgCl2(1,2-Dimethoxyethane)2

1993 ◽  
Vol 48 (8) ◽  
pp. 1151-1154 ◽  
Author(s):  
Bernhard Neumüller ◽  
Gudrun Stieglitz ◽  
Kurt Dehnicke
Keyword(s):  
Crystal Structure ◽  
Organic Solvents ◽  
Magnesium Atom ◽  
Chlorine Atoms ◽  
Space Group ◽  
X Ray ◽  
Distorted Octahedral Coordination ◽  
Distorted Octahedral ◽  
In Cis ◽  
Ray Methods

MgCl2(DME)2 has been prepared by reaction of MgCl2 with excess dimethoxyethane (DME) in n-pentane solution as white crystals, which are soluble in organic solvents. The crystal structure was determined by X-ray methods. Space group P21/c, Z=4,2512 observed unique reflections, R=0.050. Lattice dimensions at –70°C: a = 1338.9(1), b = 845.1(1), c = 1315.3(2) pm, β = 112.69(1)°. The magnesium atom is in a distorted octahedral coordination by the two chlorine atoms in cis-positions and by the four oxygen atoms of two chelating 1,2-dimethoxyethane molecules.

Über Oxocuprate, XXII Zur Kristallchemie von Kupferoxichlorid: Cu2OCl2 / On Oxocuprates, XXII The Crystal Structure of Cu2OCl2

1977 ◽  
Vol 32 (4) ◽  
pp. 380-382 ◽  
Author(s):  
R. Arpe ◽  
Ηk Müller-Buschbaum
Keyword(s):  
Crystal Structure ◽  
Single Crystals ◽  
Orthorhombic Space Group ◽  
X Ray ◽  
Distorted Octahedral Coordination ◽  
Distorted Octahedral ◽  
Jahn Teller ◽  
Jahn Teller Effect ◽  
Group D ◽  
Ray Methods

Single crystals of Cu2OCl2 were prepared and investigated by X-ray methods. Cu2OCl2 crystallizes orthorhombic, space group D2h24-Fddd (α = 969.9, b = 960.3, c = 746.2 pm). Cu2+ has a distorted octahedral coordination. The JAHN-TELLER-Effect and effective coordination number are discussed.

scholarly journals Crystal Structure of [Bis(L-Alaninato)Diaqua]Nickel(II) Dihydrate

2009 ◽  
Vol 2009 ◽  
pp. 1-5 ◽  
Author(s):  
Awni Khatib ◽  
Fathi Aqra ◽  
David Deamer ◽  
Allen Oliver
Keyword(s):  
Crystal Structure ◽  
Aqueous Solution ◽  
Potassium Hydroxide ◽  
Water Molecules ◽  
Coordination Geometry ◽  
Gauche Conformation ◽  
X Ray ◽  
Distorted Octahedral Coordination ◽  
Distorted Octahedral Coordination Geometry ◽  
Distorted Octahedral

The title complex, [Ni, has been prepared from nickel(II) chloride in aqueous solution by adding L-alanine and potassium hydroxide. It has been crystallized from aqueous solution, and its structure was determined by X-ray structure analysis. The nickel(II) ion adopts distorted octahedral coordination geometry with two bidentate L-alanine molecules and two water molecules. The complex is neutral and dihydrated. The crystal structure shows the hydrogen bonding between water and amide hydrogens within the lattice, and each fragment of the complex contains two water molecules as hydrated water. The L-alaninato ligand skeleton of the compound adopts the most stable trans-III configuration in the solid state. The alternating two five-membered chelate rings are in the stable gauche conformation.

scholarly journals [BIS(D-ALANINATO)DIAQUA)NICKEL(II) DIHYDRATE: PREPARATION AND CRYSTAL STRUCTURE

2008 ◽  
Vol 16 (16) ◽  
pp. 23-39
Author(s):  
Khatib Awni ◽  
Fatbi Aqrn ◽  
David Deamer ◽  
Allen Oliver
Keyword(s):  
Crystal Structure ◽  
Aqueous Solution ◽  
Potassium Hydroxide ◽  
Title Complex ◽  
Water Molecules ◽  
Coordination Geometry ◽  
X Ray ◽  
Distorted Octahedral Coordination ◽  
Distorted Octahedral Coordination Geometry ◽  
Distorted Octahedral

The title complex of formula [Ni(NH2CH3CHCOO)2(H20)2].2H2O has been prepared from nickel(II) chloride in an aqueous solution by adding D-alanine and potassium hydroxide. It has beett crystallized from an aqueous solution and its structure was determined by X-ray structure analysis. The nickel(II) atom adopts distorted octahedral coordination geometry with two bidentate alanine molecules and two water molecules. The complex is neutral and dihydrated. The network crystal structure shows hydrogen bonding between water and amide hydrogens within the lattice, and each fragment of the complex contains two water molecules as hydrated water.

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.

Rietveld Refinement of the Crystal Structure of CuF2

1991 ◽  
Vol 6 (3) ◽  
pp. 156-158 ◽  
Author(s):  
Peter C. Burns ◽  
Frank C. Hawthorne
Keyword(s):  
Crystal Structure ◽  
Powder Diffraction ◽  
Diffraction Data ◽  
Rietveld Method ◽  
Monoclinic Space Group ◽  
Powder Diffraction Data ◽  
X Ray ◽  
Distorted Octahedral Coordination ◽  
Distorted Octahedral ◽  
Monoclinic Distortion

AbstractThe crystal structure of monoclinic CuF2 has been refined by the Rietveld method from X-ray powder diffraction data. The structure is monoclinic, space group P21/n, a = 3.2973(2), b = 4.5624(3), c = 4.6157(3) Å, β = 83.293(3)°, V = 68.96(2) Å3, with Cu+2 at (0,0,0) and F−1 at (−0.04176(68), 0.29410(35), 0.29410(35)). Final RB = 0.97%, RP = 1.99%, Rwp = 2.32%, RWP(expected) = 1.46%. The structure has a rutile-type arrangement, but with a monoclinic distortion that produces a highly distorted octahedral coordination around the Cu2+ ion with equatorial and apical Cu-F distances of 1.92 and 2.32 Å respectively.

Synthese und Kristallstruktur von VBr2(N3S2)(Pyridin)2/ Synthesis and Crystal Structure of VBr2(N3S2)(pyridine)2

1986 ◽  
Vol 41 (7) ◽  
pp. 831-833 ◽  
Author(s):  
Wolfgang Willing ◽  
Ruth Christophersen ◽  
Ulrich Müller ◽  
Kurt Dehnicke
Keyword(s):  
Molecular Structure ◽  
Crystal Structure ◽  
Chloro Complex ◽  
Monoclinic Space Group ◽  
Crystal Data ◽  
Synthesis And Crystal Structure ◽  
X Ray ◽  
Distorted Octahedral Coordination ◽  
Distorted Octahedral ◽  
Moisture Sensitive

AbstractVBr2(N3S2)(pyridine)2 is obtained in form of brown-black, moisture sensitive crystals by the reaction of the corresponding chloro complex with trim ethylbrom osilane. The com pound is characterized by its IR spectrum and an X-ray crystal structure determination (1322 observed reflexions, R = 0.077). Crystal data: monoclinic, space group Aba2, Z = 4, a = 1100.3, b = 1480.0, c = 983.3 pm. A molecular structure with a distorted octahedral coordination for the vanadium atoms was found: there are two short VN bonds o f 178 pm with two N atoms o f the planar N3S2 chelate, two long (228 pm) VN(pyridine) bonds trans to the former VN bonds and two bromo ligands.

Cystamindi-ium tetrachlorocuprate [NH3(CH2)2SS(CH2)2NH3][CuCl4]: synthesis, crystal structure, and thermal decomposition

2015 ◽  
Vol 30 (2) ◽  
pp. 163-169 ◽  
Author(s):  
D. Y. Leshok ◽  
N. N. Golovnev ◽  
S. D. Kirik
Keyword(s):  
Crystal Structure ◽  
Thermal Decomposition ◽  
Infrared Spectroscopy ◽  
Ionic Structure ◽  
Powder Diffraction Data ◽  
X Ray ◽  
Organic Layers ◽  
Distorted Octahedral Coordination ◽  
Distorted Octahedral ◽  
Inorganic Layers

The salt [NH3(CH2)2SS(CH2)2NH3][CuCl4] was obtained by crystallization after adding CuCl2 to cystamine (Cysta), solved in hydrochloric acid. The assumption of conserved disulfide connection (S–S) in the compound, made on the basis of infrared spectroscopy, is further supported by the crystal structure determined from X-ray powder diffraction data. The compound has an ionic structure. [CuCl4]2− and CystaH22+ ions package in the form of inorganic and organic layers in the cell, interconnected through the formation of hydrogen bonds via NH3-groups and chlorine atoms of the complex [CuCl4]2−. Inorganic layers are additionally stabilized in the parquet package of [CuCl4]2− ions which provides a Cu-distorted octahedral coordination. CystaH2[CuCl4] is stable in air up to 200 °C. Thermal decomposition occurs in several stages, accompanied by breaking of S–S bonds, releasing of the organic component and yielding CuO.

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