Selective synthesis of iridium(iii) end-capped polyynes by oxidative addition of 1-iodopolyynes to Vaska's complex

2018 ◽  
Vol 47 (47) ◽  
pp. 17046-17054 ◽  
Author(s):  
Bartłomiej Pigulski ◽  
Agata Jarszak ◽  
Sławomir Szafert
Keyword(s):  
General Formula ◽  
Oxidative Addition ◽  
Selective Synthesis ◽  
Carbonyl Chloride ◽  
Vaska's Complex

The reaction of bis(triphenylphosphine)iridium(i) carbonyl chloride (Vaska's complex) with a series of 1-iodopolyynes (1-CnI and2-CnI) gave σ-polyynyl iridium(iii) complexes with general formula R(CC)nIr(PPh3)2(Cl)(I)(CO).

Oxidative addition of seleninyl chloride to Vaska's complex

Polyhedron ◽  
1996 ◽  
Vol 15 (1) ◽  
pp. 157-159 ◽  
Author(s):  
Jonathan Cartwright ◽  
Anthony F. Hill
Keyword(s):  
Oxidative Addition ◽  
Vaska's Complex

Synthesis of substituted β-diketiminate gallium hydrides via oxidative addition of H–O bonds

2015 ◽  
Vol 44 (38) ◽  
pp. 16894-16902 ◽  
Author(s):  
Eduardo Herappe-Mejía ◽  
Karla Trujillo-Hernández ◽  
Juan Carlos Garduño-Jiménez ◽  
Fernando Cortés-Guzmán ◽  
Diego Martínez-Otero ◽  
...  
Keyword(s):  
General Formula ◽  
Oxidative Addition ◽  
Addition Reactions ◽  
Oh Groups

Substituted β-diketiminate gallium hydrides of the general formulaLGa(H)X have been obtained from the oxidative addition reactions of compounds with OH groups intoLGa (L= HC[CMeNAr]2−, Ar = 2,6-iPr2C6H3).

Organoplatinum(IV) derivatized vinyl monomers and polymers prepared by oxidative addition

1996 ◽  
Vol 74 (11) ◽  
pp. 1983-1989 ◽  
Author(s):  
Sudhir Achar ◽  
Richard J. Puddephatt ◽  
John D. Scott
Keyword(s):  
Free Radical ◽  
Acrylic Acid ◽  
Key Words ◽  
Radical Polymerization ◽  
General Formula ◽  
Oxidative Addition ◽  
Free Radical Polymerization ◽  
Vinyl Monomers ◽  
Acryloyl Chloride ◽  
High Degree

Organoplatinum(IV) complexes of general formula [PtXMe2R(NN)], containing vinyl substituents, have been prepared by oxidative addition of RX, (RX = methyl 2-(bromomethyl)acrylate, 2-(bromomethyl)acrylic acid, 2-bromoethyl methacrylate, acryloyl chloride, and chloromethylstyrene), to [PtMe2(NN)], NN = 2,2′-bipyridine or 4,4′-di-tert-butyl-2,2′-bipyridine. Polymers with organoplatinum(IV) substituents have been prepared either by free radical polymerization of the organoplatinum(IV) derivatized monomers or by free radical polymerization of the organic monomers, followed by the oxidative addition of the C-X substituents of these polymers to [PtMe2(NN)]. In the latter method, it is generally not possible to metallate all the C—X bonds, but a high degree of platinum incorporation can be achieved. Key words: organoplatinum, polymer, oxidative addition, vinyl.

Kinetic study of the oxidative addition of methyl iodide to Vaska’s complex in ionic liquids

2005 ◽  
Vol 690 (15) ◽  
pp. 3522-3528 ◽  
Author(s):  
Steven J. P’Pool ◽  
Marc A. Klingshirn ◽  
Robin D. Rogers ◽  
Kevin H. Shaughnessy
Keyword(s):  
Ionic Liquids ◽  
Kinetic Study ◽  
Methyl Iodide ◽  
Oxidative Addition ◽  
Vaska's Complex

Selective organometallic syntheses from molecular pools

2002 ◽  
Vol 74 (1) ◽  
pp. 63-68 ◽  
Author(s):  
Marta Catellani
Keyword(s):  
High Selectivity ◽  
Oxidative Addition ◽  
Reductive Elimination ◽  
Selective Synthesis ◽  
Aryl Iodide ◽  
Bond Forming ◽  
Mild Conditions ◽  
Palladium Catalyzed ◽  
Selective Alkylation ◽  
Sequential Processes

A new methodology is described, consisting of the use of molecular pools in palladium-catalyzed sequential processes occurring under mild conditions with high selectivity. These reactions involve palladacycle formation from aryl iodide, palladium, and norbornene, the latter behaving as a second catalyst that is first incorporated into the metallacycle and expelled at the end of the process. Selective alkylation or arylation of the arene nucleus occurring by oxidative addition/reductive elimination of palladacycles are coupled, after norbornene expulsion, with C­H or C­C bond-forming reactions such as hydrogenolysis, olefin insertion, arylboronic coupling, etc. The variety of possible combinations offers a powerful tool for the selective synthesis of unusual and not readily accessible aromatics.

Some Problems in the Oxidative Addition and Binding of an Ethylene to a Transition Metal Center.

1987 ◽  
Vol 6 (4) ◽  
pp. 902-902
Author(s):  
Jerome Silestre ◽  
Maria Calhorda ◽  
Roald Hoffman ◽  
Page Stoutland ◽  
Robert Bergman
Keyword(s):  
Transition Metal ◽  
Oxidative Addition ◽  
Metal Center

X-ray Structure Refinement and Vibrational Spectroscopy of Ca8Gd2 (PO4)6 O2

2013 ◽  
Vol 12 (10) ◽  
pp. 719-726
Author(s):  
R. Ayadi ◽  
Mohamed Boujelbene ◽  
T. Mhiri
Keyword(s):  
Solid State ◽  
General Formula ◽  
Vibrational Spectroscopy ◽  
Powder Diffraction ◽  
Infrared Spectra ◽  
Solid State Reaction ◽  
Structure Refinement ◽  
Unit Cell ◽  
Cell Group ◽  
X Ray

The present paper is interested in the study of compounds from the apatite family with the general formula Ca10 (PO4)6A2. It particularly brings to light the exploitation of the distinctive stereochemistries of two Ca positions in apatite. In fact, Gd-Bearing oxyapatiteCa8 Gd2 (PO4)6O2 has been synthesized by solid state reaction and characterized by X-ray powder diffraction. The site occupancies of substituents is0.3333 in Gd and 0.3333 for Ca in the Ca(1) position and 0. 5 for Gd in the Ca (2) position.  Besides, the observed frequencies in the Raman and infrared spectra were explained and discussed on the basis of unit-cell group analyses.

Reversible Oxidative-Addition and Reductive-Elimination of Thiophene from a Titanium Complex and Its Thermally-Induced Hydrodesulfurization Chemistry

2019 ◽  
Author(s):  
Alejandra Gomez-Torres ◽  
J. Rolando Aguilar-Calderón ◽  
Carlos Saucedo ◽  
Aldo Jordan ◽  
Alejandro J. Metta-Magaña ◽  
...  
Keyword(s):  
Dft Calculations ◽  
Ring Opening ◽  
Thiophene Ring ◽  
Oxidative Addition ◽  
Reductive Elimination ◽  
Thermally Induced ◽  
Titanium Complex

<p>The masked Ti(II) synthon (<sup>Ket</sup>guan)(<i>η</i><sup>6</sup>-Im<sup>Dipp</sup>N)Ti (<b>1</b>) oxidatively adds across thiophene to give ring-opened (<sup>Ket</sup>guan)(Im<sup>Dipp</sup>N)Ti[<i>κ</i><sup>2</sup>-<i>S</i>(CH)<sub>3</sub><i>C</i>H] (<b>2</b>). Complex <b>2</b> is photosensitive, and upon exposure to light, reductively eliminates thiophene to regenerate <b>1</b> – a rare example of early-metal mediated oxidative-addition/reductive-elimination chemistry. DFT calculations indicate strong titanium π-backdonation to the thiophene π*-orbitals leads to the observed thiophene ring opening across titanium, while a proposed photoinduced LMCT promotes the reverse thiophene elimination from <b>2</b>. Finally, pressurizing solutions of <b>2 </b>with H<sub>2</sub> (150 psi) at 80 °C leads to the hydrodesulfurization of thiophene to give the Ti(IV) sulfide (<sup>Ket</sup>guan)(Im<sup>Dipp</sup>N)Ti(S) (<b>3</b>) and butane. </p>

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