Reactions of [Ru(CO)₃Cl₂]₂ with aromatic nitrogen donor ligands in alcoholic media

Abstract

= chelating aromatic nitrogen ligand, N = non-chelating or bridging ligand). The reaction and the product distribution can be controlled by adjusting the reaction stoichiometry. The reactivity of the new ruthenium complexes was tested in 1-hexene hydroformylation. The activity can be associated with the degree of stability of the complexes and the ruthenium-ligand interaction. Chelating or bridging nitrogen ligands suppresses the activity strongly compared with the bare ruthenium carbonyl chloride, while the decrease in activity is less pronounced with monodentate ligands. A plausible catalytic cycle is proposed and discussed in terms of ligand-ruthenium interactions. The reactivity of the ligands as well as the catalytic cycle was studied in detail using the computational DFT methods.

Structural and spectroscopic studies of 2,9-dimethyl-1,10-phenanthrolinium cation (DPH) with chloride, triflate and gold dicyanide anions. The role of H-bonding in Molecular recognition and enhancement of - stacking

“…In 3 where the H-bonding interaction of the Au(CN) 2 anion lacks to induce interlayer or intra-layer interaction, cocrystallization of the neutral molecule induces the needed - stacking that influences the crystal morphology. Similar behavior has been observed in previous structural work involving metal based anionic adducts including tetrachloridoferrate(III), Pt, and Ru containing anions [23][24][25].…”

Bis(2,9-dimethyl-1,10-phenanthrolinium) hexachloridoplatinate(IV)

“…For related literature, see: Yousefi, Amani et al (2007); Yousefi, Teimouri et al (2007a,b,c); Morsali (2005); Yu et al (2006); Moreno et al (2006); Veidis et al (1981); Zordan & Brammer (2004); Hasan et al (2001); Juan et al (1998); Li & Liu (2003); Hu et al (2003); Terzis & Mentzafos (1983); Bencini et al (1992); Ciccarese et al (1998); Delafontaine et al (1987); Bokach et al (2003); Zordan et al (2005).…”

“…We have also, reported the synthesis and crystal structure of [PtCl 4 (pz) 2 ], (V), (Yousefi et al, 2007c) [where pz is pyrazine]. Several proton transfer systems using 2,9-dimethyl-1,10-phenanthroline, with proton donor molecules, such as [Dmphen](ClO 4 ), (VI), (Morsali, 2005), [Dmphen] (NO 3 ), (VII), (Yu et al, 2006), [Dmphen][Ru(CO) 3 Cl 3 ], (VIII), (Moreno et al, 2006) and [Dmphen] [FeCl 4 ], (IX), (Veidis et al, 1981) [where Dmphen is 2,9-dimethyl-1,10 -phenanthrolinium] have been synthesized and characterized by singlecrystal X-ray diffraction methods.…”

2,9-Dimethyl-1,10-phenanthrolin-1-ium tetrachloridoferrate(III) methanol monosolvate

“…For related structures, see: Abboud et al (2005); Amani et al (2007Amani et al ( , 2009; Khavasi et al (2008); Moreno et al (2006); Morsali (2005); Veidis et al (1981); Yousefi et al (2007); Yu et al (2006).…”