Ruthenium(II) complexes containing both arene and functionalized phosphines. Synthesis and catalytic activity for the hydrogenation of styrene and phenylacetylene
摘要:
The [RuCl2(eta(6)-arene)](2) complex reacts with PPh2R (R = H, Py, CH2Py, C=CPh, C=C'Bu and C=Cp-Tol) ligands in CH2Cl2 to give neutral P-coordinated ruthenium(II) complexes [RuCl2(p-cymene)PPh2R]. The structure of [RuCl2(p-cymene)PPh2H] and [RuCl2(p-cymene)PPh2Py] complexes has been established by X-ray diffraction. The neutral P-coordinated complexes [RuCl2(p-cymene)PPh2Py] and [RuCl2(p-cymene)PPh2CH2Py] react with NaBF4 in CH2Cl2-MeOH mixture to give [RuCl(eta(6)-p-cymene)PPh2Py]BF4 and [RuCl(eta(6)-p-cymene)PPh2CH2Py]BF4 complexes, in which PPh2Py and PPh2CH2Py act as bidentate ligands. The structure of [RuCl(eta(6)-p-cymene)PPh2Py]BF4 was determined by X-ray diffraction. The reaction of [RuCl2(eta(6)-arene)](2) with PPh2C=CPPh2 led to the [RuCl2(p-cymene)](2)PPh2C=CPPh2 complex, in which the diphosphine ligand bridges two [RuCl2(p-cymene)] units. [RuCl2(p-cymene)PPh2Py] and [RuCl(eta(6)-p-cymene)PPh2Py]BF4 are suitable catalyst precursors for the hydrogenation of styrene and phenylacetylene. (C) 1998 Elsevier Science S.A. All rights reserved.
Ruthenium(II) complexes containing both arene and functionalized phosphines. Synthesis and catalytic activity for the hydrogenation of styrene and phenylacetylene
摘要:
The [RuCl2(eta(6)-arene)](2) complex reacts with PPh2R (R = H, Py, CH2Py, C=CPh, C=C'Bu and C=Cp-Tol) ligands in CH2Cl2 to give neutral P-coordinated ruthenium(II) complexes [RuCl2(p-cymene)PPh2R]. The structure of [RuCl2(p-cymene)PPh2H] and [RuCl2(p-cymene)PPh2Py] complexes has been established by X-ray diffraction. The neutral P-coordinated complexes [RuCl2(p-cymene)PPh2Py] and [RuCl2(p-cymene)PPh2CH2Py] react with NaBF4 in CH2Cl2-MeOH mixture to give [RuCl(eta(6)-p-cymene)PPh2Py]BF4 and [RuCl(eta(6)-p-cymene)PPh2CH2Py]BF4 complexes, in which PPh2Py and PPh2CH2Py act as bidentate ligands. The structure of [RuCl(eta(6)-p-cymene)PPh2Py]BF4 was determined by X-ray diffraction. The reaction of [RuCl2(eta(6)-arene)](2) with PPh2C=CPPh2 led to the [RuCl2(p-cymene)](2)PPh2C=CPPh2 complex, in which the diphosphine ligand bridges two [RuCl2(p-cymene)] units. [RuCl2(p-cymene)PPh2Py] and [RuCl(eta(6)-p-cymene)PPh2Py]BF4 are suitable catalyst precursors for the hydrogenation of styrene and phenylacetylene. (C) 1998 Elsevier Science S.A. All rights reserved.