The crystal structure of potassium [3,6-dimethyloct-4-yne-3,6-dioltrichloroplatinate(II)], K{Cl3PtII[(C2H5)(CH3)C(0H)–C [triple-bond] C–C(OH)(CH3)(C2H5)]}

1976 ◽  
Vol 32 (1) ◽  
pp. 199-202 ◽  
Author(s):  
R. J. Dubey
Keyword(s):  
Crystal Structure ◽  
Triple Bond

Darstellung, Reaktionen und spektroskopische Charakterisierung von [Os2X8]2-, X = Cl, Br, I, und Kristallstruktur von (PPN)2[Os2I8] · 2 CH2Cl2 / Preparation, Reactions and Spectroscopic Characterization of [Os2X8]2-, X = Cl, Br, I, and Crystal Structure of (PPN)2[Os2I8] · 2 CH2Cl2

1990 ◽  
Vol 45 (10) ◽  
pp. 1416-1424 ◽  
Author(s):  
W. Preetz ◽  
P. Hollmann ◽  
G. Thiele ◽  
H. Hillebrecht
Keyword(s):  
Crystal Structure ◽  
Structure Determination ◽  
Triple Bond ◽  
Room Temperature ◽  
Spectroscopic Characterization ◽  
Spectroscopic Constants ◽  
Monoclinic System ◽  
X Ray ◽  
Fine Structures

The triply bonded octahalogenodiosmate(III) anions [Os2X8]2-, previously known with X = Cl, Br, have now been extended to include the iodide with two staggered OsI4 units. This compound was prepared by treating [Os2Cl8]2- with Nal at room temperature in acetone solution. The structure determination by X-ray diffractometry on single crystals of (PPN)2[Os2I8] · 2 CH2Cl2, reveals crystallization in the monoclinic system, space group P21/c with Z = 4. The Os-Os triple bond is with 2.212(1) Å the longest within the three octahalogenodiosmates(III). The Raman spectra show ν(OsOs) at 285, [Os2Cl8]2-; at 287, [Os2Br8]2- and for the iodo compound at 270.1 cm-1 with up to three overtones. The spectroscopic constants are calculated to be ω1 = 270.9 cm-1; X11 = -0.50 cm-1. The 10 Κ UV-VIS spectra of solid [(n-C4H9)4N]2[Os2X8] exhibit δ-π* transitions with maxima at 723, 690 and 643 nm, superimposed by vibrational fine structures with long progressions of 195, 211 and 183 cm-1 for X = Cl, Br, I, respectively. Oxidation of [Os2X8]2-, X = Cl, Br with the corresponding halogen leads to the cleavage of the Os-Os bond, and the dekahalogenodiosmates(IV), [Os2X10]2-, are formed

Notizen: 1,2-Dimethoxyethan-Komplexe von MoNCl3 und WNCl3. Die Kristallstruktur von [MoNCl3 · DME] / 1,2-Dimethoxyethane Complexes of MoNCl3 and WNCl3. The Crystal Structure of [MoNCl3 · DME]

1993 ◽  
Vol 48 (12) ◽  
pp. 1841-1844 ◽  
Author(s):  
Eva Rentschler ◽  
Kurt Dehnicke
Keyword(s):  
Crystal Structure ◽  
Bond Length ◽  
Organic Solvents ◽  
Structure Determination ◽  
Triple Bond ◽  
Trans Position ◽  
Molybdenum Complex ◽  
Structure Solution ◽  
In Trans ◽  
Moisture Sensitive

The complexes [MoNCl3·DME] and [WNCl3·DME] (DME = 1,2-dimethoxyethane) have been prepared by the reaction of the nitride chlorides MNC13 with equimolar amounts of DME in CH2Cl2 suspensions. They form orangered, moisture sensitive crystals, which are soluble in organic solvents. The molybdenum complex has been characterized by a crystal structure determination. Space group Pbca, Z = 8, structure solution with 1781 observed unique reflections, R = 0.031. Lattice dimensions at –60°C: a = 738.6(1), b = 1182.2(1), c = 2314.1(1) pm. [MoNCl3·DME] forms monomeric complexes with chelating DME molecules and Mo–O bond lengths of 215.4(4) and 247.4(4) pm, the longer one being in trans-position of the nitrido ligand. The MoN bond length of 163.3(5) pm suggests a triple bond.

Synthesis and crystal structure of [(.eta.6-C6H5CH3)V(CO)2]2, a compound with a vanadium-vanadium triple bond

1993 ◽  
Vol 12 (5) ◽  
pp. 1682-1685 ◽  
Author(s):  
Thomas S. Janik ◽  
Charles H. Lake ◽  
Melvyn Rowen Churchill
Keyword(s):  
Crystal Structure ◽  
Triple Bond ◽  
Synthesis And Crystal Structure

Tetrakis(phenylethynyl)tin(IV)

2007 ◽  
Vol 63 (11) ◽  
pp. m2762-m2762 ◽  
Author(s):  
Mohammed Lahcini ◽  
Minna T. Räisänen ◽  
Pascal M. Castro ◽  
Martti Klinga ◽  
Markku Leskelä
Keyword(s):  
Crystal Structure ◽  
Solid State ◽  
Title Compound ◽  
Triple Bond ◽  
Three Dimensional ◽  
Asymmetric Unit ◽  
Tetrahedral Symmetry ◽  
Acetylenic Bond ◽  
Dimensional Network ◽  
Phenyl Proton

The asymmetric unit of the crystal structure of the title compound, [Sn(C8H5)4], consists of one fourth of a discrete tin complex and one half of another which both possess nearly ideal tetrahedral symmetry; the site symmetries of the two Sn atoms are \overline4 and 2. The bond angles at all acetylide C atoms are almost linear. The Sn—C distances [2.076 (6) and 2.065 (6)–2.069 (6) Å in the two complexes) are short when compared to the sum of the covalent radii of C and Sn (2.177 Å), but consistent with another tetrakis(alkynyl)tin complex. The acetylenic bond distances [1.196 (7) and 1.183 (7)–1.207 (7) Å] are consistent with a triple C[triple-bond]C bond. Therefore, despite the short Sn—C distances, the ligands are mainly σ-bonded to the metal. In the solid state, these complexes form a three-dimensional network via agostic C—H interactions as a phenyl proton in the ortho position interacts with the acetylenic carbon in the α position to the tin center.

Molybdännitridtrichlorid-2,3,3-trichloracrylnitril, [MoNCI3 · NC-C2Cl3]2 Synthese, IR-Spektrum und Kristallstruktur / Molybdenumnitridetrichloride-2,3,3-trichloroacrylnitrile, [MoNCl3 · NC—C2Cl3]2 Synthesis, IR Spectrum, and Crystal Structure

1988 ◽  
Vol 43 (12) ◽  
pp. 1616-1620 ◽  
Author(s):  
Abderraouf Khabou ◽  
Kurt Dehnicke
Keyword(s):  
Crystal Structure ◽  
Nitrogen Atom ◽  
Bond Length ◽  
Structure Determination ◽  
Ir Spectrum ◽  
Triple Bond ◽  
Crystal Data ◽  
Space Group ◽  
Bond Lengths ◽  
Trans Influence

Abstract [MONCl3 · NC - C2Cl3]2 has been prepared by the reaction of MONCl3 with trichloromethyl isocyanidedichloride, CCl3NCCl2 , in CH2Cl2 suspension. The compound forms redbrown. mois-ture sensitive crystals, which were characterized by their IR spectrum as well as by a crystal structure determination (2482 independent observed reflexions, R = 0.048). Crystal data (-70 °C): Space group P21/c, Z = 2, a = 674.2(2); b = 2128.2(11); c = 786.0(4) pm: β = 102.81(3)°. [MONCl3 • NC-C2Cl3]2 forms centrosymmetric dimeric molecules via chloro bridges with Mo-Cl bond lengths of 240.7 and 276.0 pm. The longer MoCl bond of the MOCl2MO ring is caused by the trans influence of the nitride ligand; the MoN bond length of 167 pm corresponds with a triple bond. The 2,3,3-trichloroacrylnitrile ligand is bonded by its nitrogen atom with a bond length of Mo -N = 216 pm; the Mo-N≡C-C sequence is almost linear with a remarkable short C-C bond of 143.0 pm.

scholarly journals Crystal structure of aldoxime dehydratase and its catalytic mechanism involved in carbon-nitrogen triple-bond synthesis

2013 ◽  
Vol 110 (8) ◽  
pp. 2810-2815 ◽  
Author(s):  
J. Nomura ◽  
H. Hashimoto ◽  
T. Ohta ◽  
Y. Hashimoto ◽  
K. Wada ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Triple Bond ◽  
Catalytic Mechanism ◽  
Aldoxime Dehydratase

The Crystal Structure of the Platinum Acetylenic Complex, K[Pt((C2H5)2C(OH)C≡CC(OH)(C2H5)2)Cl3]

1973 ◽  
Vol 51 (1) ◽  
pp. 126-131 ◽  
Author(s):  
A. L. Beauchamp ◽  
Fernande D. Rochon ◽  
T. Theophanides
Keyword(s):  
Crystal Structure ◽  
Triple Bond ◽  
Direct Interaction ◽  
Complex Salt ◽  
Thermal Parameters ◽  
Hydroxyl Groups ◽  
Oh Groups ◽  
Normal Length ◽  
In Cis ◽  
Coordination Plane

The complex salt K[Pt((C2H5)2C(OH)C≡CC(OH)(C2H5)2)Cl3] forms monoclinic crystals, a = 10.841(5), b = 9.796(4), c = 17.414(6) Å, β = 100.44(2)°, Z = 4, space group P21/c. Positional and anisotropic thermal parameters were refined to R = 0.069 and Rw = 0.064 by using 1662 independent reflections.The coordination around platinum is planar, and the triple bond of the acetylenic ligand is approximately perpendicular to the coordination plane. The triple bond is 1.18(3) Å and the C≡C—C angles [Formula: see text] show a deformation of the ligand in a direction away from the platinum atom with the two hydroxyl groups in cis configuration, above and below the plane of the PtCl3 group. The cis Pt—Cl bonds are of normal length, but the trans Pt—Cl bond seems to be shorter. The K+ ion is surrounded by four chlorine atoms and two oxygen atoms at relatively short distances. The oxygen–potassium attraction seems to be the predominant direct interaction of the—OH groups with the rest of the crystal.

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