Naslov
Synthesis of an Ionic Paramagnetic Ruthenium(III) Complex and Its Application as an Efficient and Recyclable Catalyst for the Transfer Hydrogenation of Ketones

Autori
Zhou, Chengliang ; Zhang, Jing ; Đaković, Marijana ; Popović, Zora ; Zhao, Xiaoli ; Liu, Ye

Izvornik
European journal of inorganic chemistry (1434-1948) (2012), 21; 3435-3440

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
ruthenium; paramagnetism; hHydrogenation; ketones; homogeneous catalysis

Sažetak
A novel ionic complex, bis[1-butyl-2-(diphenylphosphanyl)-3-methylimidazolium]tetrachloridoruthenium(III) hexafluorophosphate (2), has been synthesized and fully characterized. The single-crystal X-ray diffraction analysis showed that 2 is composed of an Ru complex cation and PF6– anion. The cation has a highly symmetrical Ru-centered octahedron geometry with four Cl atoms in the equatorial plane and two imidazolium-substituted phosphane ligands in the axial positions. It exhibits paramagnetism due to the presence of one unpaired electron in the phosphane-ligated low-spin Ru(III) complex. Complex 2 exhibited good catalytic performance in the transfer hydrogenation of a wide range of ketones by using alcohols as hydrogen donors. Owing to its high polarity, good thermal stability, and insensitivity to moisture and oxygen, complex 2 could be used in six catalytic cycles in the transfer hydrogenation of acetophenone without any obvious loss of activity.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA