Nitrous Oxide Mediated Synthesis of Monomeric Hydroxoruthenium Complexes. Reactivity of (DMPE)<sub>2</sub>Ru(H)(OH) and the Synthesis of a Silica-Bound Ruthenium Complex
作者:Anne W. Kaplan、Robert G. Bergman
DOI:10.1021/om980295d
日期:1998.11.1
to produce (DMPE)2Ru(H)(OC(O)CF3) (22, 55% yield). Much of the observed reactivity of 1 is rationalized using the assumption that the first step involves reversible formation of a metal cation/OH- ionpair (23). Attempts to trap the cation with ethylene resulted in formation of the ruthenium ethylene complex (DMPE)2Ru(C2H4) (2); there is strong evidence that 2 forms via a cationic hydridoruthenium ethylene
Hydrogen-Bond Acceptance of Bifunctional Ligands in an Alkyne−Metal π Complex
作者:Douglas B. Grotjahn、Valentín Miranda-Soto、Elijah J. Kragulj、Daniel A. Lev、Gülin Erdogan、Xi Zeng、Andrew L. Cooksy
DOI:10.1021/ja0774616
日期:2008.1.1
reactive alkyne pi complexes, intermediates in anti-Markovnikovalkynehydration by CpRu bis(phosphine) catalysts with heterocyclic substituents. Each heterocycle accepts a hydrogen bond from an acetylene C-H, as revealed by NMR coupling constants between alkyne 13C and 1H nuclei as well as between alkyne 13C and pyridine 15N (2hJCN). Moreover, further alkyne transformations occur at temperatures from
Microwave spectra and structure of dichloroethenes
作者:Harutoshi Takeo、Masaaki Sugie、Chi Matsumura
DOI:10.1016/0022-2860(88)80285-0
日期:1988.11
Abstract The complete r s structures for both 1,1- and cis -1,2-dichloroethenes have been derived from isotopic measurements for each isotopic position. The accuracy of the structural parameters obtained is discussed on the basis of isotope effect on bond lengths caused by zero-point vibrations, and it is suggested that more than 0.01 A of additional uncertainty originating from the isotope effect
C−H Bond Activation and C−C Bond Formation in the Reactions of the Methyl Complex [Ir<sub>2</sub>(CH<sub>3</sub>)(CO)<sub>2</sub>(Ph<sub>2</sub>PCH<sub>2</sub>PPh<sub>2</sub>)<sub>2</sub>][CF<sub>3</sub>SO<sub>3</sub>] with Alkynes
作者:Jeff R. Torkelson、Robert McDonald、Martin Cowie
DOI:10.1021/om990291o
日期:1999.9.1
[Ir2(H)(CO)3(μ-CCHMe)(dppm)2][CF3SO3]. Reaction of 1 with an excess of acetylene results in the incorporation of two acetylene molecules, giving [Ir2(CH3)(C2H)(CO)2(μ-H)(μ-CCH2)(dppm)2][CF3SO3], containing terminal methyl and acetylide ligands and bridging hydride and vinylidene groups. Reaction of 1 with a number of internal, nonactivated alkynes results first in the formation of the alkyne-bridged products
甲基络合物[Ir 2(CH 3)(CO)(μ-CO)(dppm)2 ] [CF 3 SO 3 ](1)易于与各种炔烃分子反应。使用含有吸电子取代基的炔烃(RC⋮CR'; R = R'= CO 2 Me,CF 3 ; R = CO 2 Me,R'= H),炔烃桥联产物[Ir 2(CH 3)结果为(CO)2(μ-炔)(dppm)2 ] [CF 3 SO 3 ]。与其他1-炔烃(HC⋮CR,R = Me,Ph)在-80°C下反应导致氧化加成反应生成乙炔氢化物[Ir 2 H(CH3)(CO)2(μ-C 2 R)(DPPM)2 ] [CF 3 SO 3 ],其在升温经历氢化物配体与乙炔化的β碳的转移以得到亚乙烯基桥连的产品。在环境温度下的甲烷消除发生时,产生的乙炔化物桥连的“A帧”,的[Ir 2(CO)2(μ-C 2 R)(DPPM)2 ] [CF 3 SO 3 ]。反应11当量的乙炔通过类似的乙炔
Some Organometallic Chemistry of Molybdenum Complexes that Contain the [HIPTN<sub>3</sub>N]<sup>3</sup><sup>-</sup> Triamidoamine Ligand, {[3,5-(2,4,6-<i>i</i>-Pr<sub>3</sub>C<sub>6</sub>H<sub>2</sub>)<sub>2</sub>C<sub>6</sub>H<sub>3</sub>NCH<sub>2</sub>CH<sub>2</sub>]<sub>3</sub>N}<sup>3</sup><sup>-</sup>
作者:Matthew J. Byrnes、Xuliang Dai、Richard R. Schrock、Adam S. Hock、Peter Müller
DOI:10.1021/om050373e
日期:2005.8.1
between [Mo(NH3)]BPh4 and [Bu4N]CN in fluorobenzene. Electrochemical studies in 0.1 M [Bu4N]BAr‘4 in PhF at room temperature revealed reversible couples for Mo(C2H4)+/0 and Mo(C2H2)+/0 at −0.42 and −0.94 V, respectively, while Mo(CN) exhibits two redox processes at −0.27 and −1.61 V that we assign to the Mo(CN)+/0 and Mo(CN)0/- redox couples, respectively. Addition of [Cp2Fe]BAr‘4 to a solution of Mo(η2-C2H2)