Synthesis and study of platinum silylene complexes of the type (R3P)2Pt=SiMes2 (Mes = 2,4,6-trimethylphenyl)

2003 ◽  
Vol 81 (11) ◽  
pp. 1127-1136 ◽  
Author(s):  
Jay D Feldman ◽  
Gregory P Mitchell ◽  
Jörn-Oliver Nolte ◽  
T Don Tilley
Keyword(s):  
Oxidative Addition ◽  
Reductive Elimination ◽  
Synthesis And Characterization ◽  
Silylene Complexes

The synthesis and characterization of neutral platinum silylene complexes (R3P)2Pt=SiMes2 (R = i-Pr (1) or cyclohexyl (2), Mes = 2,4,6-trimethylphenyl) is reported. The dimesitylsilylene ligand in 2 is displaced by a number of ligands including phosphines, alkenes, alkynes, and O2. Complex 2 reacts with ROH substrates (R = H, Me, Et) to give (Cy3P)2Pt and Mes2Si(OR)(H) and with H2 to give trans-(Cy3P)2Pt(H)SiHMes2 (3). Reaction of H2SiMes2 with (Cy3P)2Pt gave cis-(Cy3P)2Pt(H)SiHMes2 (4). EXSY NMR experiments of 4 reveal that exchange of silicon and platinum hydrides occurs via reductive elimination – oxidative addition and not via a silylene intermediate.Key words: silylene, EXSY, platinum, hydride.

scholarly journals Synthesis and Characterization of Methoxy-bridged Bis(silylene)tungsten Complexes

2011 ◽  
Vol 4 (1) ◽  
pp. 109 ◽  
Author(s):  
R. Begum ◽  
S. M. S. Islam
Keyword(s):  
Elemental Analysis ◽  
Oxidative Addition ◽  
Metal Center ◽  
Synthesis And Characterization ◽  
29Si Nmr ◽  
Mechanism Of Formation ◽  
Tungsten Complexes ◽  
Plausible Mechanism ◽  
Silylene Complexes

Synthesis of two methoxy bridged bis(silylene) complexes (CpMe4)W(CO)2 {(Et2Si)••OMe••(SiMe2)}(3) and (CpMe)W(CO)2 {(Et2Si)••OMe••(SiMe2)}(4) have been synthesized. Both the compounds contain chiral tungsten center and formed via oxidative addition of an Si-H bond to a coordinatively unsaturated metal center. The complexes were characterized by 1H, 13C, 29Si NMR, IR and elemental analysis. A plausible mechanism of formation is also suggested.Keywords:  Coordinatively unsaturated; Chiral tungsten; Oxidative addition.© 2012 JSR Publications. ISSN: 2070-0237 (Print); 2070-0245 (Online). All rights reserved.doi: http://dx.doi.org/10.3329/jsr.v4i1.7890J. Sci. Res. 4 (1), 109-118 (2012)

Oxidative addition/reductive elimination of aldehydes and ketones at rhodium. Synthesis and characterization of cis-hydrido acyl complexes of rhodium(III)

1987 ◽  
Vol 6 (11) ◽  
pp. 2453-2455 ◽  
Author(s):  
Claudio. Bianchini ◽  
Andrea. Meli ◽  
Maurizio. Peruzzini ◽  
Alberto. Vacca ◽  
Fabrizio. Zanobini
Keyword(s):  
Oxidative Addition ◽  
Reductive Elimination ◽  
Synthesis And Characterization ◽  
Acyl Complexes ◽  
Aldehydes And Ketones

Synthesis and characterization of chelate and bridging triazenide complexes of palladium and platinum. Stereoselective oxidative addition of chlorine or iodine to [NBu4][Pt(C6F5)2(η2-PhNNNPh)]

2001 ◽  
pp. 2683-2689 ◽  
Author(s):  
José Ruiz ◽  
J. F. Javier López ◽  
Venancio Rodríguez ◽  
José Pérez† ◽  
M. Carmen Ramírez de Arellano ◽  
...  
Keyword(s):  
Oxidative Addition ◽  
Synthesis And Characterization

Dimethylplatinum(IV) Complexes With Cyanide: Thermal and Photoassisted Substitution Reactions, and Characterization of Products by N.M.R.

1987 ◽  
Vol 40 (9) ◽  
pp. 1565 ◽  
Author(s):  
TG Appleton ◽  
JR Hall ◽  
MA Williams
Keyword(s):  
Ultraviolet Irradiation ◽  
Oxidative Addition ◽  
Reductive Elimination ◽  
Methyl Groups ◽  
Substitution Reactions ◽  
Aqueous Acid ◽  
Cyanide Ligands ◽  
Cis And Trans ◽  
Insoluble Precipitate

Reactions of cyanide with the dimethylplatinum (IV) complexes, [PtMe2(OH) (H20)1.5 n, [PtMe2Br2]n and fac-PtMe2Br(H2O)3+, have been studied, principally by 1H, 13C and 195Pt n.m.r. Cyanide rapidly displaces the ligands trans to the methyl groups. Subsequent reactions cis to the methyl groups occur more slowly with heating, or, for bromo complexes, on ultraviolet irradiation. These substitution reactions compete with reductive elimination of groups from the platinum(IV) compounds to produce platinum(II) products. All attempts to prepare solutions of fac-PtMe2(CN)(H2O)3+ were unsuccessful. Oxidative addition of ICN to cis-PtMe2( py )2 ( py = pyridine) gave PtMe2I(CN)( py )2, from which a solution of fac-PtMe2(CN)( MeOH )3+ in methanol could be obtained. Addition of water or aqueous acid to this solution gave a very insoluble precipitate of [PtMe2(CN)(OH)n. The cis and trans influences on Jpt -C and δC of the cyanide ligands have been evaluated.

Oxidative addition of oxygen-hydrogen bonds to iridium(I): synthesis and characterization of (phenolato)- and (carboxylato)iridium(III) hydride complexes

1993 ◽  
Vol 32 (9) ◽  
pp. 1681-1688 ◽  
Author(s):  
Folami T. Ladipo ◽  
Mahimid Kooti ◽  
Joseph S. Merola
Keyword(s):  
Hydrogen Bonds ◽  
Oxidative Addition ◽  
Synthesis And Characterization ◽  
Hydride Complexes

Synthesis and characterization of and stereoselective oxidative addition of chlorine or bromine to platinum complex, [NBu4][Pt(C6F5)2(C5H4NS)]

1993 ◽  
Vol 12 (11) ◽  
pp. 4368-4375 ◽  
Author(s):  
Juan Fornies ◽  
Consuelo Fortuno ◽  
Miguel A. Gomez ◽  
Babil Menjon ◽  
Eberhardt Herdtweck
Keyword(s):  
Platinum Complex ◽  
Oxidative Addition ◽  
Synthesis And Characterization

Synthesis and Characterization of IrH2{Si(OTf)Ph2}(TFB)(PR3) (PR3= PiPr3, PCy3):  First Base-Stabilized Silylene Complexes of Iridium

1996 ◽  
Vol 15 (8) ◽  
pp. 2185-2188 ◽  
Author(s):  
Wanzhi Chen ◽  
Andrew J. Edwards ◽  
Miguel A. Esteruelas ◽  
Fernando J. Lahoz ◽  
Montserrat Oliván ◽  
...  
Keyword(s):  
Synthesis And Characterization ◽  
Silylene Complexes

The Halogen Effect in Oxidative Addition of Trimethylsilyl and Trimethyltin Halides to Platinum(II): Synthesis and Characterization of Silylplatinum(IV) Complexes

1994 ◽  
Vol 13 (5) ◽  
pp. 1559-1560 ◽  
Author(s):  
Christopher J. Levy ◽  
Richard J. Puddephatt ◽  
Jagadese J. Vittal
Keyword(s):  
Oxidative Addition ◽  
Synthesis And Characterization ◽  
Halogen Effect

Oxidative Addition of Group 14 Element Hydrido Compounds to OsH2(η2-CH2CHEt)(CO)(PiPr3)2:  Synthesis and Characterization of the First Trihydrido−Silyl, Trihydrido−Germyl, and Trihydrido−Stannyl Derivatives of Osmium(IV)

1996 ◽  
Vol 35 (5) ◽  
pp. 1250-1256 ◽  
Author(s):  
María L. Buil ◽  
Pablo Espinet ◽  
Miguel A. Esteruelas ◽  
Fernando J. Lahoz ◽  
Agustí Lledós ◽  
...  
Keyword(s):  
Oxidative Addition ◽  
Synthesis And Characterization ◽  
Group 14 ◽  
Derivatives Of
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