Reactions of Low-Coordinate Cobalt(0)–N-Heterocyclic Carbene Complexes with Primary Aryl Phosphines
作者:Dongyang Wang、Qi Chen、Xuebing Leng、Liang Deng
DOI:10.1021/acs.inorgchem.8b02937
日期:2018.12.17
6-dimesitylphenyl) at 80 °C furnish the diamagnetic cobalt(I) phosphido complexes [(NHC)Co(PHDmp)] (NHC = IPr, 1; ICy, 2) that feature the Co–(η6-mesityl) interaction. Complex1 can coordinate CO to generate the terminal phosphido complex [(IPr)Co(CO)3(PHDmp)] (3) and can be oxidized by [Cp2Fe][BArF4] to yield the cobalt(II) phosphido complex [(IPr)Co(PHDmp)][BArF4] (4, BArF4 = tetrakis(3,5-di(trifluoromethyl)phenyl)borate)
Synthesis of Heavy Cyclodipnictadiphosphanes [ClE(μ-P-Ter)]<sub>2</sub> [E = P, As, Sb, or Bi; Ter = 2,6-bis(2,4,6-trimethylphenyl)phenyl]
作者:Alexander Hinz、Axel Schulz、Alexander Villinger
DOI:10.1021/acs.inorgchem.6b00218
日期:2016.4.4
phosphanes with amino-dichloropnictanes and subsequent elimination of TerNH2, the lighter congeners could be prepared only by a metathesis reaction of [ClBi(μ-P-Ter)]2 with PCl3 and AsCl3. Spectroscopic and structural data indicate the existence of cis and trans isomers of [ClP(μ-P-Ter)]2 in contrast to all heavier derivatives, for which only the trans isomer was obtained.
Surveying the {AuCl} adducts of bulky phosphines bearing the 2,6-dimesitylphenyl group
作者:David V. Partyka、Marlena P. Washington、James B. Updegraff、Xufang Chen、Christopher D. Incarvito、Arnold L. Rheingold、John D. Protasiewicz
DOI:10.1016/j.jorganchem.2008.12.051
日期:2009.4
A series of gold chloride AuCl} adducts of the sterically demanding phosphines DmpPR2 (Dmp = 2,6-dimesitylphenyl; R = H (1); Me (2); Cl (3)) have been prepared. The adducts are readily formed by the reaction of Au(tht)Cl and DmpPR2, yielding [(DmpPR2)AuCl] (R = H (4); Me (5); Cl (6)) in moderate to excellent yields. All three new compounds have been structurally characterized. The structures demonstrate
Iridium Phosphinidene Complexes: A Comparison with Iridium Imido Complexes in Their Reaction with Isocyanides
作者:Halil Aktas、Jos Mulder、Frans J. J. de Kanter、J. Chris Slootweg、Marius Schakel、Andreas W. Ehlers、Martin Lutz、Anthony L. Spek、Koop Lammertsma
DOI:10.1021/ja9048509
日期:2009.9.23
18-Electron nucleophilic, Schrock-type phosphinidene complexes 3 [Cp*(Xy-N C)Ir PAr] (Ar = Mes*, Dmp, Mes) are capable of unprecedented [1 + 2]-cycloadditions with 1 equiv of isocyanide RNC (R = Xy, Ph) to give novel inclaphosphirane complexes [Cp*(Xy-N C)IrPArC=NR]. Their structures were ascertained by X-ray diffraction. Density functional theory investigations on model structures revealed that the iridaphosphirane complexes are formed from the addition of the isocyanicle to 16-electron species [Cp*Ir=PAr] forming first complex 3 that subsequently reacts with another isocyanicle to give the products following a different pathway than its nitrogen analogue [Cp*Ir Nt-Bu] 1.
Exploration of tin-catalyzed phosphine dehydrocoupling: Catalyst effects and observation of tin-catalyzed hydrophosphination
作者:Karla A. Erickson、Lily S.H. Dixon、Dominic S. Wright、Rory Waterman
DOI:10.1016/j.ica.2014.07.002
日期:2014.10
The phosphine substrate scope in dehydrocoupling reactions catalyzed by Cp-2*SnCl2 (Cp* = pentamethylcyclopentadienyl, 1) have been explored. Catalyst variants R2SnX2 (R = Cp*, Ph; X = Cl, Me, Ph) were also tested, which revealed that activity is dependent on the Cp* ligands as well as more electron withdrawing X ligands. Steric factors at the phosphine substrate are also important. Compound 1 was found to be a catalyst for hydrophosphination of styrene, 2,3-dimethylbutadiene, and diphenylacetylene with phenylphosphine, which is the first example of a p-block catalyst for hydrophosphination. (C) 2014 Elsevier B. V. All rights reserved.