scholarly journals Die Kristallstruktur des Silbertetrachloroaurats(III) AgAuCl4 und seine kristallchemische Verwandtschaft zum Rubidiumtetrachloroaurat(III) RbAuCl4 / The Crystal Structure of Silver Tetrachloroaurate(III) AgAuCl4 and its Crystal Chemical Relationship to the Rubidium Tetrachloroaurate(III) RbAuCl4

1977 ◽  
Vol 32 (7) ◽  
pp. 741-744 ◽  
Author(s):  
Walther Werner ◽  
Joachim Strähle
Keyword(s):  
Crystal Structure ◽  
Bond Length ◽  
Octahedral Coordination ◽  
Monoclinic Space Group ◽  
Crystal Chemical ◽  
Space Group ◽  
Square Planar ◽  
Cl Atoms

AgAuCl4 crystallizes in the monoclinic space group I2/c with Zi = 4. The crystal structure is built up by Ag+ cations and square planar AuCl4⁻ anions with Au-Cl bond length of 228 pm. The Ag+ ions have an octahedral coordination of Cl atoms. AgAuCl4 is topologically related to RbAuCl4.

Caesium Tetrachlorido Aurate(III), CsAuCl4

2011 ◽  
Vol 66 (8) ◽  
pp. 871-872
Author(s):  
Florian Kraus
Keyword(s):  
Crystal Structure ◽  
Single Crystals ◽  
Monoclinic Space Group ◽  
Space Group ◽  
Square Planar

The crystal structure of caesium tetrachlorido aurate(III), CsAuCl4, is presented. The compound crystallizes in the form of orange, needle-shaped single crystals in the monoclinic space group C2/c with a = 12.923(2), b = 6.1715(9), c = 96512(13) Å , β = 105.049(13)°, V = 743.34(19) Å3, and Z = 4. As expected, the compound consists of isolated Cs+ cations and square planar AuCl4- anions

Notizen: Darstellung und Kristallstruktur von [H3N(CH2)3NH3]SbCl5 / Preparation and Crystal Structure of [H3N(CH2)3NH3]SbCl5

1989 ◽  
Vol 44 (9) ◽  
pp. 1151-1154 ◽  
Author(s):  
André du Bois ◽  
Walter Abriel
Keyword(s):  
Crystal Structure ◽  
Single Crystal ◽  
Monoclinic Space Group ◽  
Intensity Data ◽  
Space Group ◽  
X Ray ◽  
Cl Atoms

Using 293 K diffractometer intensity data, the structure of [H3N(CH2)3NH3]SbCl5 has been determined by single crystal X-ray technique and refined to a final Rw of 0.026. The colorless crystals are monoclinic (space group P21/c) with a = 10.1338(5), b = 11.4623(7), c = 11.3668(6) Å, β = 113.52(5)° and Ζ = 4. The structure contains ψ-octahedral SbCl52- anions. A center of symmetry connects two anions forming a (Sb2Cl10)4- unit with rather long Sb—Cl distances for the bridging Cl-atoms (2.92 and 3.68 A, respectively).

Preparation and Crystal Structure of Na4TiSe4. A Selenotitanate with Discrete Tetrahedral Anions

2000 ◽  
Vol 55 (1) ◽  
pp. 39-44 ◽  
Author(s):  
Kurt O. Klepp
Keyword(s):  
Crystal Structure ◽  
Bond Length ◽  
Monoclinic Space Group ◽  
Tetrahedral Complex ◽  
Space Group ◽  
Distorted Octahedral ◽  
Intimate Mixture ◽  
New Type ◽  
Complex Anions

Red crystals of Na4TiSe4 were obtained by reacting an intimate mixture of Na2Se, Ti and Se at 750°C. Na4TiSe4 is monoclinic, space group I2/a with a = 24.027(6), b = 7.346(4), c = 21.572(6) Å, (β = 104.52(2)°, Z = 16. Its crystal structure was determined from diffractometer data (AgK α-radiation) and refined to a conventional R of 0.036 for 2673 F0′s and 158 variables. The crystal structure is of a new type, characterized by the presence of discrete tetrahedral complex anions, [TiSe4]4- , which are arranged in slabs parallel to (100). The average Ti-Se bond length is 2.385(1) Å. The Na+ cations are in different chalcogen environments with distorted octahedral, square pyramidal or planar configurations, respectively

Darstellung und Kristallstruktur von Na4Ga2S5. Ein Thiogallat mit -Zweier-Doppelketten / Preparation and Crystal Structure of Na4Ga2S5. A Thiogallate with --zweier-Double Chains

1992 ◽  
Vol 47 (7) ◽  
pp. 937-941 ◽  
Author(s):  
Kurt O. Klepp
Keyword(s):  
Crystal Structure ◽  
Bond Length ◽  
Single Crystals ◽  
Monoclinic Space Group ◽  
Alkali Cations ◽  
Space Group ◽  
Distorted Octahedral ◽  
New Type

Transparent single crystals of Na4Ga2S5 were obtained from a melt of Na2S, Ga and S. Na4Ga2S5 is monoclinic, space group P21/c with a = 7.967(1), b = 6.133(2), c = 19.852(9) Å, β = 91.61(2)°, Ζ = 4. Its crystal structure was refined to a conventional R of 0.033 for 1150 observed reflections.The structure of Na4Ga2S5 is of a new type. It is characterized by infinite ribbon like thiogallate anions, -, which are built up by GaS4-tetrahedra (mean Ga-S bond length 2.28 A) sharing apices and edges. The four crystallographically independent alkali cations are coordinated to six sulphur atoms in distorted octahedral configurations.

Kristallstruktur von Triphenylmethyliodsulfan (C6H5)3CSI [1] / Crystal Structure of Triphenylmethyliodosulfane (C6H5)3 CSI [1]

1988 ◽  
Vol 43 (4) ◽  
pp. 399-402 ◽  
Author(s):  
Rolf Minkwitz ◽  
Hans Preut ◽  
Jürgen Sawatzki
Keyword(s):  
Crystal Structure ◽  
Bond Length ◽  
Structure Determination ◽  
Monoclinic Space Group ◽  
Space Group

Abstract The crystal structure of (C6H5)3CSI is reported. It is the first structure determination of an iodine sulfane. (C6H5)3CSI crystallizes in the monoclinic space group P21/c with a - 1226.4(7) pm, b = 1398.8(18) pm, c = 941.6(8) pm, β = 96.38(8)° and Z = 4. The sulfur-iodine bond length is 240.6(4) pm corresponding to the sum of the covalent radii with 237 pm. The molecules are linked via short I···S contacts of 321.0(4) pm such that a zig-zag chain is formed.

Synthese, Eigenschaften und Kristallstruktur von (NH4)NbOBr4/ Synthesis, Properties and Crystal Structure of (NH4)NbOBr4

1988 ◽  
Vol 43 (8) ◽  
pp. 981-984 ◽  
Author(s):  
Manfredo Hörner ◽  
Wolfgang Hiller ◽  
Joachim Strähle ◽  
George M. Sheldrick
Keyword(s):  
Crystal Structure ◽  
Raman Spectrum ◽  
Glass Surface ◽  
Vibrational Frequencies ◽  
Monoclinic Space Group ◽  
Glass Ampoule ◽  
Space Group ◽  
Square Planar ◽  
Synthesis Properties ◽  
Ir And Raman

Abstract (NH4)NbOBr4 is obtained as air sensitive, light red crystals from NH4Br and NbBr 5 in a sealed glass ampoule at 420 °C, whereby the oxygen presumably originates from the glass surface. The compound crystallizes in the monoclinic space group C2/m with a = 1269.9(1), b = 1384.7(2). c = 773.0(2) pm, β = 114.44(2)° and Z = 6. The structure is built up by NH4+ cations and polymeric NbOBr4 anions. Symmetrical linear oxo bridges with Nb-O = 199 pm connect square planar NbBr4 units to form endless chains arranged in planes parallel (010). Neighbouring NbBr4 units are in eclipsed as well as staggered orientations. The NH4+ cations are located between the planes of parallel NbOBr4 - chains. The vibrational frequencies of the IR and Raman spectrum are assigned.

Darstellung und Kristallstruktur des Niob-(triphenylphosphinimino)tetrachlorids, Nb [NP (C6 H5 )3] Cl4, einer Verbindung mit einer Niob-Stickstoff-Mehrfachbindung /Preparation and Crystal Structure of Niobium(triphenyl-phosphineimino)tetrachloride, Nb[NP(C6H5)3]Cl4, a Compound with a Niobium Nitrogen Multiple Bond

1979 ◽  
Vol 34 (9) ◽  
pp. 1199-1202 ◽  
Author(s):  
Hans Bezier ◽  
Joachim Strahle
Keyword(s):  
Crystal Structure ◽  
Multiple Bond ◽  
Monoclinic Space Group ◽  
Double Bonds ◽  
Triphenyl Phosphine ◽  
Chlorine Atoms ◽  
Space Group ◽  
Cl Atoms ◽  
Centrosymmetric Dimers ◽  
Yellow Compound

AbstractNb[NPPh3]Cl4 can be prepared by reacting NbCl4N3 with PPh3 in 1,2 dichloro ethane. The crystalline, yellow compound crystallizes in the monoclinic space group C2/c. The crystal structure consists of eight molecules, which are linked together via bridging chlorine atoms to centrosymmetric dimers. Thereby the niobium atoms obtain a sixfold coordination by one N and five Cl atoms. The triphenyl phosphine imine ligand is bound to niobium by its N atom. The approximate linearity of the resulting Nb-N-P group (angle Nb-N-P = 171°) and the distances Nb-N - 178 pm and N-P =164 pm can be interpreted by an sp hybridized N atom and double bonds to both the Nb and P atom.

35Cl NQR, Crystal Structure, and C-Cl Bond Length of Cyclohexadienones

1988 ◽  
Vol 43 (10) ◽  
pp. 873-884 ◽  
Author(s):  
Stefanie Brummer
Keyword(s):  
Crystal Structure ◽  
Decomposition Temperature ◽  
Unit Cell ◽  
Monoclinic Space Group ◽  
X Ray Diffraction ◽  
Orthorhombic Space Group ◽  
Space Group ◽  
Lattice Constants ◽  
Group D ◽  
Cl Atoms

Abstract The 35Cl NQR spectra of 2,4,4,6-tetrachloro-3,5-dimethyl-cyclohexadiene-2,5-one-l and 2,4,4,6- tetrachloro-cyclohexadiene-2,5-one-l were studied from 77 K up to the decomposition temperature, their crystal structure having been determined by single crystal X-ray diffraction. The first com­pound crystallizes in the monoclinic space group C22h -P21/m with two molecules in the unit cell. The lattice constants are a = 887.2 (3) pm, b = 704.8 (3) pm, c = 824.0 (3) pm, β = 96.10(1)°. The sec­ond compound crystallizes orthorhombic, space group D182h - Cmca, with 8 molecules in the unit cell which has the dimensions a = 711.2(2) pm, b = 1388.4(3) pm, c = 1729.8(4) pm. The structures deter­mined belong to the stable phases of the title compounds as seen from the NQR spectra as a function of temperature which show no sign for a phase transition between the melting point and 77 K. In both title compounds the molecules are planar. Their symmetry is compared with other chloro- cyclohexadiene-2,5-ones-1 and chloro-cyclohexadiene-2,5-diones-1.4. The intramolecular distances d(C-Cl) of the sp2 carbon atoms and the 35Cl NQR frequencies assigned to the corresponding Cl atoms correlate quite well according to the theory: ν(35Cl) ~ (d(c-cl))-3 The relation is ν(35Cl)/MHz = 2 + 174 · 106 -(d/pm)-3.

Koordination des dreizähnigen makrocyclischen Liganden 1-Thia-4,7-diazacyc!ononan an Palladium(II) und Platin(II) / Coordination of the Tridentate Macrocyclic Ligand 1-Thia-4,7-diazacyclononane to Palladium(II) and Platinum(II)

1988 ◽  
Vol 43 (3) ◽  
pp. 261-264 ◽  
Author(s):  
Peter Hoffmann ◽  
Rainer Mattes
Keyword(s):  
Bond Length ◽  
Central Atom ◽  
Macrocyclic Ligand ◽  
Monoclinic Space Group ◽  
Crystal Data ◽  
Ligand Environment ◽  
Space Group ◽  
Square Planar

The reaction of PdAc2 and K2PtCl4 with the ligand 1-thia-4,7-diazacyclononan (C6H14N2S - L) yield crystals of [PdL2](PF6)2 (4) and [PtL2]Br2-H2O (5), respectively. The structures of 4 and 5 have been determined.Crystal data: 4, monoclinic, space group P21/c, a = 719.2(1), b = 1712.5(3), c = 936.8(2) pm. β = 99.15°, Z = 2; 1708 reflections, R = 0.029.5, monoclinic, space group P21/c, a = 1682(2). b = 786(1), c = 1573(1) pm. β = 108.1(1)°, Z - 4; 1706 reflections, R = 0.070. 4 contains octahedrally coordinated Pd(II); in addition to the square planar PdN4 group (mean Pd -N bond length 206 pm) the S-donor atoms are weakly coordinated in the axial positions (Pd-S: 303.4(1) pm). In 5, however, Pt(II) is in a square planar ligand environment. The S-donor atoms are bent away from the axial positions of the central atom.

Synthesis, characterization and crystal structure of 4-methoxybenzylidene-based zinc(II) complexes

2022 ◽  
Vol 0 (0) ◽  
Author(s):  
Adrienne Ndiolene ◽  
Tidiane Diop ◽  
Ndiak Ndiaye ◽  
Mouhamadou Sembene Boye ◽  
François Michaud ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Infrared Spectroscopy ◽  
Monoclinic Space Group ◽  
X Ray Diffraction ◽  
Intermolecular Hydrogen Bonds ◽  
Space Group ◽  
X Ray ◽  
Type C ◽  
The Stability ◽  
Cl Atoms

Abstract Two novel zinc(II) complexes containing 4-methoxybenzylidene moieties namely, Zn(L)Cl2 (L = N, N′-bis(4-methoxybenzylidene)ethane-1, 2-diamine (1) or N-(4-methoxybenzylidene)-ethane-1, 2-diamine (2)) have been synthesized and characterized by infrared spectroscopy and single-crystal X-ray diffraction. Complex 1 crystallizes in the monoclinic space group P21/c with a = 9.2315(4); b = 12.0449(4); c = 18.2164(7) Å; β = 98.472(4)°, V = 1278.9(4) Å3 and Z = 4. Complex 2 crystallizes in the monoclinic space group P21/n with a = 6.5733 (2), b = 13.6595(5), c = 15.1615(5) Å; β = 101.846(4)°, V = 1332.33(8) Å3 and Z = 4. The environment of each Zn(II) atom is distorted tetrahedral with coordination of two terminal Cl atoms and two N atoms of the N,N′ – bis(4-methoxybenzylidene)ethane-1,2-diamine (1) or N-(4-methoxybenzylidene)ethane-1,2-diamine (2) ligand. The stability of the crystalline structure is ensured by the existence of intra- and intermolecular hydrogen bonds of the type C–H…Cl (1) and N–H…Cl (2) leading to supramolecular topologies.

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