scholarly journals Tetrahydrothiophen als Komplexligand; Darstellung und Charakterisierung von Spezies der Zusammensetzung M2(CO)9(C4H8S) (M = Mn, Re) und Mn2(CO)8(C4H8S). Röntgenstrukturanalysen von Mn2(CO)9(C4H8S) und Mn2(CO)8(C4H8S) / Tetrahydrothiophene as a Complex Ligand; Synthesis and Characterization of Species of Composition M2(CO)9(C4H8S) (M = Mn, Re) and Mn2(CO)8(C4H8S). X-Ray Structures of Mn2(CO)9(C4H8S) and Mn2(CO)8(C4H8S)

1985 ◽  
Vol 40 (1) ◽  
pp. 77-84 ◽  
Author(s):  
Ernst Guggolz ◽  
Klaus Layer ◽  
Franz Oberdorfer ◽  
Manfred Ziegler
Keyword(s):  
Structure Analysis ◽  
Synthesis And Characterization ◽  
X Ray ◽  
Ligand Synthesis ◽  
Manganese Compounds ◽  
Complex Ligand

Heating of the decacarbonyls M2(CO)10 (M = Mn, Re) in tetrahydrothiophene under reflux gave the substitution products M2(CO)9(C4H8S) (M = Mn, Re) and Mn2(CO)8(C4H8S), respectively. In the former an equatorial CO group has been substituted, while in the latter the tetra- hydrothiophene ligand bridges symmetrically two Mn-Mn bonded Mn(CO)4 units. The manganese compounds (monoclinic, P21/c) were characterized by means of X-Ray structure analysis

scholarly journals Arene Ruthenium Metalla-Assemblies with Anthracene Moieties for PDT Applications

Inorganics ◽  
2018 ◽  
Vol 6 (3) ◽  
pp. 97 ◽  
Author(s):  
Marie Gaschard ◽  
Farzaneh Nehzat ◽  
Thomas Cheminel ◽  
Bruno Therrien
Keyword(s):  
Molecular Structure ◽  
Single Crystal ◽  
General Formula ◽  
Structure Analysis ◽  
White Light ◽  
Light Irradiation ◽  
Synthesis And Characterization ◽  
X Ray

The synthesis and characterization of three metalla-rectangles of the general formula [Ru4(η6-p-cymene)4(μ4-clip)2(μ2-Lanthr)2][CF3SO3]4 (Lanthr: 9,10-bis(3,3’-ethynylpyridyl) anthracene; clip = oxa: oxalato; dobq: 2,5-dioxido-1,4-benzoquinonato; donq: 5,8-dioxido-1,4-naphthoquinonato) are presented. The molecular structure of the metalla-rectangle [Ru4(η6-p-cymene)4(μ4-oxa)2(μ2-Lanthr)2]4+ has been confirmed by the single-crystal X-ray structure analysis of [Ru4(η6-p-cymene)4(μ4-oxa)2(μ2-Lanthr)2][CF3SO3]4 · 4 acetone (A2 · 4 acetone), thus showing the anthracene moieties to be available for reaction with oxygen. While the formation of the endoperoxide form of Lanthr was observed in solution upon white light irradiation, the same reaction does not occur when Lanthr is part of the metalla-assemblies.

scholarly journals Synthesis and Characterization of Cyclic Silenolates

2014 ◽  
Author(s):  
Michael Haas ◽  
Roland Fischer ◽  
Ana Torvisco ◽  
Harald Stueger
Keyword(s):  
Single Crystals ◽  
Structure Analysis ◽  
High Selectivity ◽  
Ring Cleavage ◽  
Synthesis And Characterization ◽  
Nmr Analysis ◽  
Subsequent Reaction ◽  
X Ray ◽  
Carbonyl Function

Based on earlier work by Ottosson [1] and Ohshita [2] the previously unknown cyclic silenolates 1a-c and 2a-b have been synthesized by the reaction of acylcyclohexasilanes with one or two equivalents of KOtBu. The nature of the anions (silenide or silenolate) and consequently the outcome of subsequent reaction steps largely depends on the substituent R at the carbonyl function. Detailed NMR-analysis of 1a-c and 2a-b corroborate this deduction. Furthermore, for 1a-c and 2a-b single crystals which were suitable for X-ray structure analysis could be grown. Very interesting is the reactivity of 1b, which at 50°C undergoes a hitherto unknown 1,4-trimethylsilyl-migration followed by a ring cleavage of the cyclohexasilane cycle to form the anion 3a. The high selectivity of these reactions is demonstrated by the formation of an acyl-functionalized bicyclo-2,2,2-octasilane in >90% yield from 2a and \(ClSiMe_{2}SiMe_{2}Cl\).

scholarly journals Darstellung und Charakterisierung der μ3-Oxo-Cluster [Cp3Mo3(CO)4µ-Cl)(µ3-O)] und [Cp3Mo3(µ-CO)3(CO)3(µ3-O)]+ / Synthesis and Characterization of the µ3-Oxo Clusters [Cp3Mo3(CO)4μ-Cl)(μ3-O)] and [Cp3Mo3(μ-CO)3(CO)3(μ3-O)]+

1990 ◽  
Vol 45 (4) ◽  
pp. 508-514 ◽  
Author(s):  
B. Nuber ◽  
W. Schatz ◽  
M. L. Ziegler
Keyword(s):  
Structure Analysis ◽  
Elemental Analysis ◽  
Spectroscopic Data ◽  
Synthesis And Characterization ◽  
Monoclinic Space Group ◽  
Orthorhombic Space Group ◽  
Space Group ◽  
X Ray

[CpMo(CO)3]2 (1) (Cp = cyclopentadienyl) reacts with InCl3 in diglyme to yield the oxo-cluster [Cp3Mo3(CO)4(μ-Cl)(μ3-O)] (2) and the cationic oxo-cluster [Cp3Mo3(μ-CO)3(CO)3(μ3-O)]+ as the salt [Cp3Mo3(μ-CO)3(CO)3(μ3-O)][CpMo(CO)3InCl3] (3). The compounds were characterized by elemental analysis, spectroscopic data and X-ray structure analysis. Compound 2 crystallizes in the orthorhombic space group P212121 with a = 1006.0(3), b = 1244.6(4) and c = 1600.8(5) pm, V = 2004.3 x 106 pm3, Z = 4. Compound 3 crystallizes in the monoclinic space group P 21/m with a = 874.4(8), b = 1407(1) and c = 1500(1) pm, β = 92.95(6) , V = 1843 × 106 pm3, Z = 2.

A Triple Newman-Kwart Rearrangement at a Fully Substituted Benzene Ring

2009 ◽  
Vol 64 (11-12) ◽  
pp. 1633-1638 ◽  
Author(s):  
Hubert Theil ◽  
Roland Fröhlich ◽  
Thorsten Glaser
Keyword(s):  
Single Crystal ◽  
Benzene Ring ◽  
Structure Analysis ◽  
Synthesis And Characterization ◽  
X Ray ◽  
Benzene Rings

The Newman-Kwart rearrangement of O-thiocarbamates to S-thiocarbamates is a versatile method for the conversion of phenols into thiophenols. The triple rearrangement of the O-trithiocarbamate 2,4,6-triacetyl-1,3,5-tri-(dimethylthiocarbamoyloxy)benzene (2) to the S-trithiocarbamate 2,4,6- triacetyl-1,3,5-tri-(dimethylthiocarbamoylthio)benzene (3) is performed, which is unprecendented for fully substituted benzene rings. The synthesis and characterization of the O-trithiocarbamate 2 and the S-trithiocarbamate 3 including the single-crystal X-ray structure analysis of compound 3 are presented

Synthesis and characterization of TiN / Ti / AISI 410 coatings

2018 ◽  
Vol 2 (1) ◽  
pp. 7
Author(s):  
S Chirino ◽  
Jaime Diaz ◽  
N Monteblanco ◽  
E Valderrama
Keyword(s):  
Synthesis And Characterization ◽  
Photoemission Spectroscopy ◽  
X Ray Diffraction ◽  
X Ray ◽  
Columnar Grains ◽  
Tin Thin Films ◽  
Steel Aisi ◽  
Interacting Surfaces ◽  
Stainless Steel Aisi

The synthesis and characterization of Ti and TiN thin films of different thicknesses was carried out on a martensitic stainless steel AISI 410 substrate used for tool manufacturing. The mechanical parameters between the interacting surfaces such as thickness, adhesion and hardness were measured. By means of the scanning electron microscope (SEM) the superficial morphology of the Ti/TiN interface was observed, finding that the growth was of columnar grains and by means of EDAX the existence of titanium was verified.  Using X-ray diffraction (XRD) it was possible to observe the presence of residual stresses (~ -3.1 GPa) due to the different crystalline phases in the coating. Under X-ray photoemission spectroscopy (XPS) it was possible to observe the molecular chemical composition of the coating surface, being Ti-N, Ti-N-O and Ti-O the predominant ones.

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