Die Kristall- und Molekülstruktur von Tris(dimethylamino)boran / The Crystal and Molecular Structure of Tris(dimethylamino)borane

1982 ◽  
Vol 37 (10) ◽  
pp. 1230-1233 ◽  
Author(s):  
Günter Schmid ◽  
Roland Boese ◽  
Dieter Bläser
Keyword(s):  
Molecular Structure ◽  
Crystal Growth ◽  
Single Crystal ◽  
Room Temperature ◽  
Crystal And Molecular Structure ◽  
Melting Process ◽  
Single Crystal Growth ◽  
Zone Melting ◽  
X Ray Diffraction ◽  
X Ray

Abstract Tris(dimethylamino)borane, X-ray The crystal and molecular structure of tris(dimethylamino)borane, a liquid at room temperature, has been determined by single-crystal X-ray diffraction methods at - 116°C. The single-crystal growth was accomplished by means of a miniature zone melting process on the diffractometer. The structure data are compared with those of other aminoboranes.

Single Crystal Growth and Thermoelectric Properties of Ce5Cu19P12

1998 ◽  
Vol 545 ◽  
Author(s):  
K. J. Proctor ◽  
F. J. DiSalvo
Keyword(s):  
Electrical Resistivity ◽  
Crystal Growth ◽  
Single Crystal ◽  
Single Crystals ◽  
Room Temperature ◽  
Single Crystal Growth ◽  
Room Temperature Resistivity ◽  
X Ray Diffraction ◽  
X Ray ◽  
Temperature Resistivity

AbstractSingle crystals of the known ternary cerium intermetallic Ce5Cu19P12were grown by Sn flux and I2transport methods. The long axis of the black hexagonal needles was confirmed to be the c-axis by single crystal X-ray diffraction. Electrical resistivity of both single crystals and a pressed pellet was measured from 4 - 300 K; the room temperature resistivity is about 400 μΩ-cm for the needle axis of the crystals and about 5 mΩ-cm for the pressed pellet. The thermopower of the pressed pellet was found to be 34 μV/K at room temperature.

scholarly journals Synthesis, characterization and single crystal X-ray analysis of azobenzene-4, 4′-dicarbonyl chloride

2018 ◽  
Vol 6 (2) ◽  
pp. 132-136
Author(s):  
Pramod Kumar Yadav
Keyword(s):  
Molecular Structure ◽  
Single Crystal ◽  
Elemental Analysis ◽  
Title Compound ◽  
Crystal And Molecular Structure ◽  
Molecular Aggregation ◽  
X Ray Diffraction ◽  
Secondary Interaction ◽  
Triclinic Crystal System ◽  
X Ray

The title compound azobenzene-4, 4′-dicarbonyl chloride has been synthesized in distilled dichlomethane and characterized by elemental analysis (C, H, N), IR and NMR (1H & 13C) studies. The crystal and molecular structure was further confirmed using single crystal X-ray diffraction analysis. It was crystallized in triclinic crystal system with space group P-1. The centrosymmetrically related molecules held together via C–H---O secondary interaction result in molecular aggregation of the compound.  Int. J. Appl. Sci. Biotechnol. Vol 6(2): 132-136

Studies of the rhenium-oxygen bond. III. The crystal and molecular structure of 1-oxo-6-ethoxo-2,4-dichloro-3,5-dipyridinerhenium(V)

1977 ◽  
Vol 55 (2) ◽  
pp. 333-339 ◽  
Author(s):  
Colin James Lyne Lock ◽  
Graham Turner
Keyword(s):  
Molecular Structure ◽  
Single Crystal ◽  
Title Compound ◽  
Crystal And Molecular Structure ◽  
Dominant Factor ◽  
X Ray Diffraction ◽  
Rhenium Atom ◽  
Full Matrix ◽  
X Ray ◽  
Oxygen Bond

The crystal and molecular structure of the title compound has been examined by single crystal X-ray diffraction. The crystals are monoclinic with a = 28.045(10), b = 8.766(3), c = 12.376(5) Å, β = 91.14(3)°. The space group is C2/c and there are eight molecules per unit cell. A total of 5053 independent reflections, of which 2860 were observed, were examined on a Syntex [Formula: see text] diffractometer. The structure was refined by full matrix least squares to an R2 value of 0.0449. The ligands form a very rough octahedron around the rhenium atom with Re—Cl(1), 2.441(3); Re—Cl(2), 2.366(3), Re—O(1), 1.684(7); Re—O(2), 1.896(6); Re—N(1), 2.144(7); Re—N(2), 2.132(7) Å. The pyridine rings are a dominant factor in determining the details of the molecular structure.

Spaltung von S4N4 zu S2N2 bei Raumtemperatur: Darstellung und Struktur von S2N2 • 2AlBr3 / Cleavage of S4N4 to S2N2 at Room Tem perature: Preparation and Structure of S2N2 • 2AlBr3

1984 ◽  
Vol 39 (2) ◽  
pp. 145-148 ◽  
Author(s):  
Ulf Thewalt ◽  
Konrad Holl
Keyword(s):  
Molecular Structure ◽  
Room Temperature ◽  
Crystal And Molecular Structure ◽  
Crystal Data ◽  
X Ray Diffraction ◽  
X Ray ◽  
Bond Lengths

The compound S2N2 • 2AlBr3 has been prepared by reaction of S4N4 with AlBr3 in 1,2-dibromoethane at room temperature. Its crystal and molecular structure have been determined by X-ray diffraction; R = 0.068. Crystal data: monoclinic, P 21/n, a = 9.594(5), b = 9.975(4), c = 7.528(4) Å , β = 111.36(5)°. The S2N2 ring of the centrosymmetrical complex is bonded via its nitrogen atoms to two AlBr3 units thus completing coordination tetrahedra around the Al atoms. Bond distances and angles within the S2N2 ring are d(S-N) = 1.629(13) and 1.651(13) Å, ∢ (S-N-S) = 95.8, and ∢ (N-S-N) - 84.2°. Whereas the S-N bond lengths agree closely with those of free S2N2, the angle at N is enlarged by ca. 5° and the angle at S is decreased by ca. 5°. The sulfur atoms form two close S···Br contacts of length 3.149 (intramolecular) and 3.193 (intermolecular) Å , respectively. The intermolecular attractive nonbonded S···Br interactions tie the complexes together in a way that leads to infinite chains which run parallel to the crystallographic z axis

Synthesis and Crystal and Molecular Structure of trans-Dichloro(ethanedial dioximato(1—)-N,N')(ethanedial dioxime-N,N')rhodium(III)

1989 ◽  
Vol 44 (1) ◽  
pp. 5-8
Author(s):  
Michel Mégnamisi-Bélombé
Keyword(s):  
Molecular Structure ◽  
Crystal Structure ◽  
Room Temperature ◽  
Crystal And Molecular Structure ◽  
Crystallographic Direction ◽  
Monoclinic Space Group ◽  
Coordination Geometry ◽  
X Ray Diffraction ◽  
X Ray ◽  
Cl Atoms

Abstract trans-Dichloro(ethanedial-dioximato)(ethanediaI-dioxime)rhodium (III), RhCl2(GH)(GH2), has been synthesized and its structure determined by single crystal X-ray diffraction at room temperature. C4H7Cl2N4O4Rh, Mr = 348.94. monoclinic space group P21/ɑ; a = 10.543(3), b = 8.363(2), c = 11.512(3)Å ; β = 92.79(2)°; V = 1024Å3; Z = 4; Dc = 2.26 Mg m-3. Final Rw = 0.075 for 2035 reflections and 139 parameters. The coordination geometry around Rh is a dis­torted (4+2) octahedron, with four chelating N atoms lying in the equatorial plane and the two Cl atoms in the apical positions. The H atoms of the oxime groups are involved in relatively weak intramolecular O-H-O bridgings, as well as in very strong intermolecular bridgings which extend throughout the crystal structure and propagate nearly parallel to the [101] crystallographic direction.

Crystal and Molecular Structure of Di-μ-phenoxido-bis-[N-{(2-hydroxybenzyl)-(S)-alaninato-κ3-O,O',N}copper(II)]. A Simple Homodimetallic Model for N-terminal Tyrosine Coordination with (S)-Alanine as a Second Amino Acid Residue

1998 ◽  
Vol 63 (3) ◽  
pp. 356-362 ◽  
Author(s):  
Svetlana Pakhomova ◽  
Jan Ondráček ◽  
František Jursík
Keyword(s):  
Molecular Structure ◽  
Room Temperature ◽  
Crystal And Molecular Structure ◽  
Carbonyl Oxygen ◽  
Antiferromagnetic Coupling ◽  
X Ray Diffraction ◽  
Apical Position ◽  
X Ray ◽  
Pyramidal Geometry ◽  
Square Pyramidal Geometry

Single-crystal X-ray diffraction study established the dimeric [Cu2(ohb-(S)-Ala)2] structure (ohb-(S)-Ala = N-(2-hydroxybenzyl-(S)-alaninate). The complex crystallizes in the tetragonal space group P43212 with a = b = 8.849(1) Å, c = 24.913(2) Å, V = 1950.8(3) Å3, Z = 8. The Cu(II) ion has distorted square-pyramidal geometry with the equatorial positions occupied by three oxygen and one nitrogen atom. Each copper atom is weakly coordinated at the apical position by carbonyl oxygen atom of the neighbouring molecule at the distance 2.329(2) Å. The Cu-Cu separation 3.0204(7) Å and the Cu-O3-Cu angle 100.8(1)° lead to antiferromagnetic coupling (at room temperature μeff = 1.35 μB). The O1-Cu-O3 angle (154.9(1)°) indicates distortion of the square pyramid toward a trigonal bipyramid (t = 0.23).

Molekül-und Elektronenstruktur des Thioheteroanions [S2 WS2CoS2WS2]2- / Molecular and Electronic Structure of the Thiohetero Anion [S2WS2CoS2WS2]2-

1978 ◽  
Vol 33 (9) ◽  
pp. 978-982 ◽  
Author(s):  
A. Müller ◽  
N. Mohan ◽  
H. Bögge
Keyword(s):  
Molecular Structure ◽  
Electronic Structure ◽  
Single Crystal ◽  
Diffraction Data ◽  
Complex Anion ◽  
Crystal And Molecular Structure ◽  
X Ray Diffraction ◽  
X Ray ◽  
Data Space ◽  
Molecular And Electronic Structure

Abstract The crystal and molecular structure of [(C6H5)4P]2[Co(WS4)2] was determined from single crystal X-ray diffraction data (space group P21/c with a = 18.542(4), b = 15.443(2), c= 18.713(2) Å, β= 108.73(1)°, Z = 4). In the complex anion Co is coordinated by two bidentate chelating WS42- anions, with a nearly tetrahedral surrounding of Co. The bond lengths in the planar metal sulfur ring CoS2W are Co-S = 2.26 Å and W-S = 2.22 Å, while the terminal W-S bonds are 2.14 Å.

scholarly journals Trinodal Self-Penetrating Nets from Reactions of 1,4-Bis(alkoxy)-2,5-bis(3,2’:6’,3’’-terpyridin-4’-yl)benzene Ligands with Cobalt(II) Thiocyanate

Crystals ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 529 ◽  
Author(s):  
Giacomo Manfroni ◽  
Alessandro Prescimone ◽  
Stuart R. Batten ◽  
Y. Maximilian Klein ◽  
Dariusz J. Gawryluk ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Crystal Growth ◽  
Single Crystal ◽  
Crystal Lattice ◽  
1H Nmr ◽  
Room Temperature ◽  
X Ray Diffraction ◽  
X Ray

The tetratopic ligands 1,4-bis(2-ethylbutoxy)-2,5-bis(3,2’:6’,3’’-terpyridin-4’-yl)benzene (1) and 1,4-bis(3-methylbutoxy)-2,5-bis(3,2’:6’,3’’-terpyridin-4’-yl)benzene (2) have been prepared and characterized by 1H and 13C{1H} NMR, IR, and absorption spectroscopies and mass spectrometry. Reactions of 1 and 2 with cobalt(II) thiocyanate under conditions of crystal growth at room temperature result in the formation of [{Co(1)(NCS)2}·MeOH·3CHCl3]n and [{Co(2)(NCS)2}·0.8MeOH·1.8CHCl3]n. Single-crystal X-ray diffraction reveals that each crystal lattice consists of a trinodal self-penetrating (62.84)(64.82)(65.8)2 net. The nodes are defined by two independent cobalt centres and the centroids of two crystallographically independent ligands which are topologically equivalent.

Dodecamethyl Bisimidotriphosphoramide (TRIPA), Part III [1, 2] The Crystal and Molecular Structure of TRIPA · H2O

1980 ◽  
Vol 35 (10) ◽  
pp. 1203-1206 ◽  
Author(s):  
Johannes C. P. M. Lapidaire ◽  
Anthoni J. De Kok
Keyword(s):  
Molecular Structure ◽  
Single Crystal ◽  
Crystal And Molecular Structure ◽  
Van Der Waals ◽  
Water Molecules ◽  
X Ray Diffraction ◽  
Monoclinic System ◽  
Space Group ◽  
X Ray

Abstract The crystal and molecular structure of dodecamethyl bisimidotriphosphoramide mono-hydrate (TRIPA • H2O, C12H38N7O4P3) has been determined by single crystal X-ray diffraction techniques. The compound crystallises in the monoclinic system, space group P2i/n with a = 9.236(3), b = 14.016(4), c = 17.534(5) A, β = 97.32(4)°, Z = 4. The building units are dimers of TRIPA • H2O. These units are separated by normal van der Waals distances. The two molecules in the dimer are connected by four hydrogen bridges involving two water molecules. The nitrogen atoms display a nearly planar hybridisation.

[(Dimethylamino)methyl]ferrocene as an Amine Ligand: Study of the Bonding and X-Ray Crystal and Molecular Structure of the Pentacarbonyl{[(dimethylamino)methyl]ferrocene}tungsten Complex

2002 ◽  
Vol 67 (2) ◽  
pp. 228-234 ◽  
Author(s):  
Axel Fischer ◽  
Frank T. Edelmann ◽  
Klaus Jacob ◽  
Ivan Pavlík ◽  
Martin Pavlišta
Keyword(s):  
Molecular Structure ◽  
Single Crystal ◽  
Crystal And Molecular Structure ◽  
X Ray Diffraction ◽  
Amine Nitrogen ◽  
X Ray ◽  
Nmr Data ◽  
Amine Ligand ◽  
C Nmr

The heterodinuclear complex [W(CO)5(Me2NCH2Fc)] (Fc = ferrocenyl) (1) resulting from the reaction of [(dimethylamino)methyl]ferrocene (2) and [W(CO)6] was studied by single-crystal X-ray diffraction. Its molecular structure confirms the coordination of the amine nitrogen in 2 to tungsten (d(W-N) = 2.359(5) Å) and reveals its trans-influence in the W(CO)5 moiety. The structure is discussed in relation to several previously referred spectroscopic (IR, UV-VIS, 13C NMR) data.

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