Experimental and theoretical characterization of Ru(II) complexes with polypyridine and phosphine ligands

Hybrid material by anchoring a ruthenium(ii) imine complex to SiO2: preparation, characterization and DFT studies

“…Fig. 4 displays the FT-IR spectrum (the deconvolution plot between 1850-1550 cm À1 is presented in the ESI ‡), where the vibrational band at 1636.8 cm À1 corresponds to the coordinated imine vibration, as reported by M. Yáñez et al 30 To calculate appropriately the IR shis originated by imineruthenium bond formation, the IR spectra of imine displayed in Fig. 3d was compared to the ruthenium coordination compound (Fig.…”

MECHANISTIC STUDY OF A RUTHENIUM HYDRIDE COMPLEX OF TYPE [RuH(CO)(N-N)(PR3)2]+ AS CATALYST PRECURSOR FOR THE HYDROFORMYLATION REACTION OF 1-HEXENE

“…18 For a comparison of catalytic activity of such systems with Ru(0) complexes, the complexes bis(triphenylphosphine) tricarbonyl ruthenium(0), Ru(CO) 3 (PPh 3 ) 2 and trirutheniumdodecacarbonyl, Ru 3 (CO) 12 were prepared according to published procedures. 19 2.1 Catalytic hydroformylation reactions.…”

“…On the other hand, the experimental determination of the vibrational frequencies of the carbonyl group by FT-IR spectroscopy of complexes 4 and 5 18 determined that both ligands (ppl and biq) present more acceptor characteristics than those of the dppz-R series. This can explain the lower catalytic activity seen in relation to the complexes of the dppz series.…”

“…16 Ruthenium(II) complexes containing polypyridine ligands have been used in other reactions in a homogeneous phase, like the water gas shift reaction (CO + H 2 O → CO 2 + H 2 ), and hydride species of the type [Ru(bpy) 2 17 Based on the knowledge of the stereo-electronic properties of the phosphorus-and nitrogen-bearing ligands in the activity and selectivity of catalytic systems, the objective of this paper is to study the catalytic activity of organometallic ruthenium hydride complexes of the type [RuH(CO) (N-N)(PR 3 The synthesis and characterization of these complexes have been previously reported by our research group. 18 Theoretical calculations were carried out using density functional theory (DFT) to elucidate the mechanism of the catalytic hydroformylation of 1-hexene with one of these systems and to interpret the observed catalytic activity.…”

Synthesis, structure and catalytic activities for hydrogen transfer reaction of the carbonyl ruthenium(II) complex containing polypyridine and phosphine ligands

“…The activities are greater than those of other ruthenium complexes. For example, ruthenium complexes containing diphosphine and bipyridine ligands [28][29][30] were reported with conversions of 82-89 % under similar conditions. Recently Lu et al [31] report the catalytic activities in hydrogen transfer reaction for ruthenium carbonyl compound with pyridine-2,6 diimine with conversion of 95% after 4 h. Other authors have prepared Ru (II) complexes containing phosphinenitrogen ligands.…”