Transition-Metal Complexes with Bidentate Ligands Spanningtrans-Positions. IX. Preparation and1H-NMR. Studies of complexes [MX2(1)] and [M?Cl(CO)(1)] (M = Pd, Pt; M? = Rh, Ir; X = Cl, Br, I; 1 = 2, 11-Bis-(diphenylarsinomethyl)benzo[c]phenanthrene) and crystal and molecular structure of [PtCl2(1)]
作者:Giovanni Balimann、Luigi M. Venanzi、Fiorella Bachechi、Luigi Zambonelli
DOI:10.1002/hlca.19800630213
日期:1980.3.5
of the bidentateligand 2, 11-bis(diphenylarsinomethyl)benzo-[c]-phenanthrene (1) is described. This ligand reacts with appropriate substrates to give mononuclear squareplanarcomplexes of type [MX2(1)] (M = Pd, Pt; X = Cl, Br, I) and [M′Cl(CO)(1)] (M′ = Rh, Ir) in which ligand 1 spans trans-positions. This is confirmed by the crystal structure of [PtCl2(1)]. 1H-NMR. spectra of the complexes are discussed
描述了双齿配体2、11-双(二苯基ar基甲基)苯并-[ c ]-菲(1)的制备。该配体与合适的底物反应,得到[MX 2(1)](M = Pd,Pt; X = Cl,Br,I)和[M'Cl(CO)(1)](M ′= Rh,Ir),其中配体1跨越转位。[PtCl 2(1)]的晶体结构证实了这一点。1 H-NMR。讨论了配合物的光谱,并与模型化合物反式-[MCl 2(12)2的光谱进行了比较。](M = Pd,Pt)和[M'Cl(CO)(12)2 ](M′= Rh,Ir;12= AsBzPh 2)。
Transition metal complexes with bidentate ligands spanningtrans-positions. VI. The preparation of some diaryl- and dialkyl derivatives of 2,11-bis (phosphinomethyl)benzo [c]phenanthrene
作者:Pramesh N. Kapoor、Luigi M. Venanzi
DOI:10.1002/hlca.19770600835
日期:1977.12.14
preparation of the ditertiary phosphines 2,11-bis (di-m-tolylphosphinomethyl)benzo [c]phenanthrene (1b), 2,11-bis (di-p-anisylphosphinomethyl)benzo-[c]phenanthrene (1c), 2,11-bis (di-m-trifluoromethylphenylphosphinomethyl) benzo-[c]phenanthrene (1d), 2,11-bis (dicyclohexylphosphinomethyl)benzo [c]phenanthrene (1e) and 2,11-bis [di-(t-butyl)phosphinomethyl]benzo [c]phenanthrene (1f), by a combination of synthetic
的二叔膦2,11-双(二-的制备米-tolylphosphinomethyl)苯并[ C ^ ]菲(1B),2,11 -双(二- p -anisylphosphinomethyl)苯并[ C ^ ]菲(1C),2- ,11双(二-米-trifluoromethylphenylphosphinomethyl)苯并[ C ^ ]菲(1D),2,11 -双(二环己基膦基)苯并[ C ^ ]菲(1E)和2,11二[二- (吨丁基)描述了通过合成途径的组合的膦基甲基]苯并[ c ]菲(1f)。
Transition Metal Complexes with Bidentate Ligands Spanningtrans-Positions. XII. Steric effects in the kinetics and mechanism of substitutions at hydride and methyl bisphosphine platinum (II) complexes
作者:Lars I. Elding、Bruno Kellenberger、Luigi M. Venanzi
DOI:10.1002/hlca.19830660607
日期:1983.9.21
Ligandsubstitution reactions on square-planar platinum (II) complexes of the types trans-[PtRXL2], trans-[PtR(4-PADA)L2][BF4], trans-[PtRX(
Mechanisms of 1,1-reductive elimination from palladium
作者:Arlene Gillie、J. K. Stille
DOI:10.1021/ja00535a018
日期:1980.7
L/sub 2/ = 2,11-bis(diphenylphosphinomethyl)benzo(c)phenanthrene (TRANSPHOS) was carried out. The three cis complexes underwent reductive elimination in the presence of coordinating solvents (Me/sub 2/SO, DMF, THF). The trans complexes which could isomerize to cis (L = PPh/sub 3/,PPh/sub 2/CH/sub 3/) did so in polar solvents and then underwent reductive elimination. (TRANSPHOS)dimethylpalladium would
顺式异构体的消除是分子内的,这由缺乏与全氘甲基钯类似物的交叉确定,并显示出一级动力学(k = 1.04 x 10/sup -3/s/sup -1/,L = PPh/sub 3/ , 60/sup 0/C; K = (6.5 to 9.5) X 10/sup -5/s/sup -1/, L = PPh/sub 2/CH/sub 3/, 60/sup 0/C; k = 4.78 x 10/sup -7/s/sup -1/, L/sub 2/ = Ph/sub 2/PCH/sub 2/CH/sub 2/PPh/sub 2/, 80/sup 0/C) . 反应混合物中二苯基乙炔的存在将钯(0)产物捕获为双(二苯基甲基膦)(二苯基乙炔)钯络合物。尽管 (TRANSPHOS) 二甲基钯不会经历乙烷的 1,1-还原消除,但在 25/sup 0/C 下向该复合物的 Me/sub 2/SO 溶液中添加更多 »