Novel bridged binuclear ruthenium-aminophosphine complexes for the transfer hydrogenation of ketones using isopropanol: Synthesis, catalytic performance, and electrochemical behavior
Yükleniyor...
Dosyalar
Tarih
2025
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
ELSEVIER
Erişim Hakkı
info:eu-repo/semantics/embargoedAccess
Özet
The starting material N,N '-bis(diphenylphosphino) ethane-1,2-diamine (1) was prepared for the first time in this study by a one-step reaction of 1,2-ethylenediamine with one equivalent of diphenylchlorophosphine. The reaction of 1 with either [Ru(p-cymene)(mu-Cl)Cl](2) or [Ru(benzene)(mu-Cl)Cl](2) afforded a series of novel bridged binuclear complexes of [C2H4-{NHPPh2-Ru(benzene)Cl-2}(2)], 1a and [C2H4-{NHPPh2-Ru(p-cymene)Cl-2}(2)], 1b, respectively. All newly synthesized complexes were comprehensively characterized using various analytical and spectroscopic techniques. H-1-, C-13-, P-31{H-1} NMR, (HH)-H-1-H-1 COSY or (HC)-H-1-C-13 HETCOR correlation experiments were employed to validate the spectral assignments. Both complexes are appropriate catalyst precursors for transfer hydrogenation of acetophenone derivatives. In particular, the complex [C2H4-{NHPPh2-Ru(benzene)Cl-2}(2)], referred to as 1a, demonstrates outstanding catalytic efficiency, by producing the relevant alcohols in 99 % conversion at 82 degrees C (TOF similar to 1200 h(-1)) in 5 min, outperforming analogous complexes in transfer hydrogenation reactions. Furthermore, the chemical characterizations, electronic transitions, and electrochemical properties of the Ru(II) complexes were systematically investigated by experimental methods.
Açıklama
Anahtar Kelimeler
Aminophosphine ligand, Ruthenium, Homogenous catalysis, Transfer hydrogenation, P-31 NMR, isoPOH
Kaynak
INORGANIC CHEMISTRY COMMUNICATIONS
WoS Q Değeri
Q1
Scopus Q Değeri
Cilt
183
Sayı
1
