New square-planar cationic Pt(II) complexes containing a methyl and an olefin in cis position
摘要:
An effective method for the synthesis of square-planar cationic Pt(II) complexes containing a methyl and an olefin in cis position is described. The addition of Me(3)OBF(4) to [Pt(phen)(eta(2)-E-MeO(2)CCH = CHCO2 Me)] affords the cationic olefin complex [PtMe(phen)(eta(2)-E-MeO(2)CCH=CHCO(2)Me)](+) (BF4-). Dimethylfumarate is easily displaced by electron-rich olefins RCH = CH2 (R = H, Ph, Me) and the products [PtMe(phen)(eta(2)-RCH=CH2)](+)(BF4-) can be isolated in good yield.
[PtR(η<sup>2</sup>-olefin)(N-N)]<sup>+</sup> Complexes Containing the Olefin and the Alkyl Ligand in a <i>cis</i> Arrangement. Preparation, Structural Characterization, and Olefin Stereochemistry
involved in a dynamic process involving the alkene ligand. The rate of alkene exchange is strongly influenced by the steric hindrance of the N-N ligand above and below the coordination plane. This feature also controls the stereochemistry of alkene coordination. Thus, for type 1 derivatives of α-olefins containing the highly crowded diacetyl bis(di-isopropylphenylimine), only one enantiomeric couple has
New square-planar cationic Pt(II) complexes containing a methyl and an olefin in cis position
作者:Ida Orabona、Achille Panunzi、Francesco Ruffo
DOI:10.1016/s0022-328x(96)06514-x
日期:1996.11
An effective method for the synthesis of square-planar cationic Pt(II) complexes containing a methyl and an olefin in cis position is described. The addition of Me(3)OBF(4) to [Pt(phen)(eta(2)-E-MeO(2)CCH = CHCO2 Me)] affords the cationic olefin complex [PtMe(phen)(eta(2)-E-MeO(2)CCH=CHCO(2)Me)](+) (BF4-). Dimethylfumarate is easily displaced by electron-rich olefins RCH = CH2 (R = H, Ph, Me) and the products [PtMe(phen)(eta(2)-RCH=CH2)](+)(BF4-) can be isolated in good yield.
Three-coordinate Pt(O) η2-complexes: electrophilic hydrogen attack through oxidative-addition of protic acids
作者:Vincenzo De Felice、Augusto De Renzi、Francesco Ruffo、Diego Tesauro
DOI:10.1016/0020-1693(94)03824-4
日期:1994.5
Abstract Different types of products can be obtained by addition of proticacids HX (X=Cl, BF 4 ) to Pt(O) species of general formula [Pt(ol)(N-N)] (ol=olefin; N-N=N,N-chelate) according to the features of the two coordinated ligands. The typical attainment of four-coordinate hydrocarbyl derivatives by insertion of the alkene into the Pt-H bond is compared with the recently reported isolation of stable
摘要将质子酸HX(X = Cl,BF 4)加入通式[Pt(ol)(NN)]的Pt(O)物种中可获得不同类型的产品(ol =烯烃; NN = N,N -螯合物)根据两个配体的特征。通过将烯烃插入Pt-H键中,典型地获得四配位烃基衍生物与最近报道的稳定的五配位氢化物的分离进行了比较。最终产物的性质也与X基团的配位能力有关。提出了添加过程的一般机制。