作者:John R. Bleeke、Monica Shokeen、Eric S. Wise、Nigam P. Rath
DOI:10.1021/om058058f
日期:2006.5.1
temperature in tetrahydrofuran solution, 1 slowly rearranges to ((1,4,5-η)-2,3-dimethyl-5-thiapentadienyl)Rh(PMe3)3 (3), the thermodynamic isomer in which the thiapentadienyl ligand is σ-bonded through the carbon end of the chain (C1) and π-bonded through the sulfur end (C4−S double bond). The reactions of both the kinetic and thermodynamic products (1 and 3, respectively) with simple electrophiles
Rhodium(I) Complexes with π-Coordinated Arylallene. Structures in the Solid State and in Solution and Reaction with Arylallene To Give Rhodacyclopentane
situated on opposite sides of the uncoordinated CC double bond. Complex 2a is in equilibrium with its isomer 4a, which shows dynamic NMR behavior on the NMR time scale. Reactions in a 3:1 molar ratio give rhodacyclopentanes, Ar = C6H5; 5b, Ar = C6H4F-p) as the main product. Complex 5a is also obtained from reaction of phenylallene with 2a. Reactions of (4-fluorophenyl)allene with RhCl(PEt3)3, RhClP(i-Pr)3}2
苯丙二烯和(4-氟苯基)丙烯与[Rh(μ-Cl)(PMe 3)2 ] 2(Rh:arylallene = 1:1)的反应得到Rh(I)与π配位的芳丙烯,RhCl(η)的配合物2 -CH 2 C CHAr)(PMe 3)2(1a,Ar = C 6 H 5;1b,Ar = C 6 H 4 F- p)。1a,b的X射线晶体学已经在铑中心周围建立了它们的方形平面配位,该中心键合到芳基丙二烯的2,3-双键上。配体的芳基和Rh中心位于未配位的1,2-双键的同一侧。配体中苯基的邻氢位置表明,CH基与Rh中心之间发生了相互干扰的相互作用。1a在苯中的溶解导致与其异构体3a平衡,该异构体3a在配体的邻位C-H基团与Rh中心之间没有紧密接触。的1个的温度范围内30-55℃的平衡混合物的1 H NMR光谱得到热力学参数3A ↔1a的ΔH °= -5.0 kJ mol - 1和ΔS °= -8 J mol - 1
Trimethylphosphine complexes of rhodium(I) and ruthenium(II); X-ray crystal structures of chlorotristrimethylphosphinerhodium and tetrakistrimethylphosphinerhodium chloride
作者:Richard A. Jones、Fernando Mayor Real、Geoffrey Wilkinson、Anita M. R. Galas、Michael B. Hursthouse、K. M. Abdul Malik
DOI:10.1039/c39790000489
日期:——
The syntheses are reported of the rhodium(I) and ruthenium(II) trimethylphosphine complexes RhCl(PMe3)3, [Rh(PMe3)4]Cl, η5-C5H5Rh(PMe3)2, CHg6Rh4(PMe3)12, trans-RuCl2(PMe3)4, [Ru2Cl2(PMe3)8]Cl2, and [RuCl(PMe3)4]BF4 and of ruthenium(I), Ru2Cl2(PMe3)4; the structures of RhCl(PMe3)3 and [Rh(PMe3)4]Cl have been determined by single crystal X-ray analysis.
Synthesis of trimethylphosphine complexes of rhodium and ruthenium. X-Ray crystal structures of tetrakis(trimethylphosphine)rhodium(I) chloride and chlorotris(trimethylphosphine)rhodium(I)
作者:Richard A. Jones、Fernando Mayor Real、Geoffrey Wilkinson、Anita M. R. Galas、Michael B. Hursthouse、K. M. Abdul Malik
DOI:10.1039/dt9800000511
日期:——
The synthesis and characterization of the following trimethylphosphine complexes of rhodium and ruthenium are reported; [Rh(PMe3)4]Cl, (A), RhCl(PMe3)3, (B), [Rh(PMe3)3]X, (X = PF6, BPh4), [RhH2(PMe3)4]Cl, RhCl(CO)(PMe3)2, [Rh(PMe3)3(CH2Cl2)]Cl, [RuCl(PMe3)2]2, [RuCl(PMe3)4]BF4, trans-RuCl2(PMe3)4, [RuCl(PMe3)4]2Cl2 and RuHCl(PMe3)4.
Synthesis and x-ray structure of a simple metallaoxetane. Metal-based selectivity in oxidative addition
作者:Andrei A. Zlota、Felix Frolow、David Milstein
DOI:10.1021/ja00173a047
日期:1990.8
La reaction d'3-halogeno-2-methyl propan-2-ol avec le complexe RhL 3 Cl (L=PPh 3 ) donne le complexe (PPh 3 ) 3 (Br)(Cl) (2-hydroxy-2-methylpropyl) du rhodium qui reagit ensuite avec (Me 3 Si) 2 NK pour donner le complexe (PPh 3 ) 3 (Br) (3,3-dimethyl) 1-Oxa-2-rhodacyclobutane. Etude par diffraction de ces deux complexes
La 反应 d'3-halogeno-2-methyl propan-2-ol avec le complexe RhL 3 Cl (L=PPh 3 ) donne le complexe (PPh 3 ) 3 (Br)(Cl) (2-羟基-2-甲基丙基) ) du rhodium qui reagit ensuite avec (Me 3 Si) 2 NK Pour donner le complexe (PPh 3 ) 3 (Br) (3,3-二甲基) 1-Oxa-2-rhodacyclobutane。练习曲 par 衍射 de ces deux complexes