Ruthenium complexes bearing bidentate Schiff base ligands as efficient catalysts for organic and polymer syntheses

Drozdzak, Renata; Allaert, Bart; Ledoux, Nele; Drăguţan, Ileana; Drăguţan, Valerian; Verpoort, Francis

doi:10.1016/j.ccr.2005.05.003

Cited by 229 publications

(79 citation statements)

References 239 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…These ill-defined catalysts are generally cheap and commercially available or readily prepared from commercially available compounds. [5] After the first highly efficient ill-defined arene ruthenium ROMP catalyst (p-cymene)-RuCl 2 (PCy 3 ) was developed by the Noels group in 1992, [6] Ru-arene-based catalysts involving different types of ligands such as phosphine ligands, [7] bidentate Schiff base ligands, [8,9] and NHC ligands [10] have been studied extensively by different groups.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Structures of N‐Heterocyclic Carbene–Sulfonate Ruthenium Complexes and Their Applications in the Ring‐Opening Metathesis Polymerization of Norbornene

Song

Wang

2015

Eur J Inorg Chem

View full text Add to dashboard Cite

A series of N-heterocyclic carbene-sulfonate (NHC-sulfonate) p-cymene ruthenium complexes (2a-2d) were synthesized in high yields from the reactions of NHC-sulfonate ligands with Ag 2 O and [(p-cymene)RuCl 2 ] 2 . All of the complexes were characterized fully by 1 H and 13 C NMR spectroscopy, high-resolution mass spectrometry, and elemental analysis. The molecular structures of 2b and 2d were determined by single-crystal X-ray diffraction analysis. Upon activation with Et 2 AlCl, the ruthenium complexes 2a-2d showed

show abstract

Section: Introductionmentioning

confidence: 99%

Synthesis and Structures of N‐Heterocyclic Carbene–Sulfonate Ruthenium Complexes and Their Applications in the Ring‐Opening Metathesis Polymerization of Norbornene

Song

Wang

2015

Eur J Inorg Chem

View full text Add to dashboard Cite

show abstract

“…According to the Koopman theorem, 39 the ionization energy and electron affinity can be equalized through HOMO and LUMO orbital energies: (2) According to the equation (2), the hardness corresponds to the gap between the HOMO and LUMO orbitals. Hence, the larger the HOMO-LUMO energy gaps the harder molecule.…”

Section: Relation Between the Homos-lumos Gap And The Chemical Hardnessmentioning

confidence: 99%

“…Schiff bases exhibit mainly interest as corrosion inhibitors, catalyst carriers, thermo-stable materials, metal complexion agents and in biological systems and they have a wide range of applications, such as dyes and pigments. [1][2][3][4][5][6][7][8][9] They can be classified in terms of display interesting photochromic and thermochromic features in the solid state. This features arise via H-atom transfer from the hydroxy O atom to the imine N atom.…”

Section: Introductionmentioning

confidence: 99%

Theoretical Study of the N-(2,5-Methylphenyl)salicylaldimine Schiff Base Ligand: Atomic Charges, Molecular Electrostatic Potential, Nonlinear Optical (NLO) Effects and Thermodynamic Properties

Zeyrek¹

2013

Journal of the Korean Chemical Society

View full text Add to dashboard Cite

ABSTRACT. Optimized geometrical structure, atomic charges, molecular electrostatic potential, nonlinear optical (NLO) effects and thermodynamic properties of the title compound N-(2,5-methylphenyl)salicylaldimine (I) have been investigated by using ab initio quantum chemical computational studies. Calculated results showed that the enol form of (I) is more stable than keto form. The solvent effect was investigated for obtained molecular energies, hardneses and the atomic charge distributions of (I). Natural bond orbital and frontier molecular orbital analysis of the title compound were also performed. The total molecular dipole moment (µ), linear polarizability (α), and first-order hyperpolarizability (β) were calculated by B3LYP method with 6-31G(d), 6-31+G(d,p), 6-31++G(d,p), 6-311+G(d) and 6-311++G(d,p) basis sets to investigate the NLO properties of the compound (I). The standard thermodynamic functions were obtained for the title compound with the temperature ranging from 200 to 450 K.

show abstract

“…This family is however dominated by ruthenium [33][34][35], iron [36][37][38][39] and copper complexes [10,21,28,[40][41][42][43][44].…”

Section: Introductionmentioning

confidence: 99%

In situ bidentate to tetradentate ligand exchange reaction in cobalt-mediated radical polymerization

Kermagoret

Jérôme

Detrembleur

et al. 2015

European Polymer Journal

View full text Add to dashboard Cite

a b s t r a c tOrganometallic-mediated radical polymerization (OMRP) has seen a significant growth in the last years notably due to the development of new metal complexes, especially cobalt derivatives. Despite of this, none of the reported complexes offers optimal control for monomers with very different reactivity, which somewhat limits the synthesis of copolymers. In order to expand the scope of cobalt-mediated radical polymerization (CMRP), we investigated an in situ ligand exchange reaction for modulating the properties of the cobalt complex at the polymer chain-end and adjusting the CACo bond strength involved in the control process. With the aim of improving the synthesis of poly(vinyl acetate)-b-poly (n-butyl acrylate) copolymers, bidentate acetylacetonate ligands, which impart high level of control to the polymerization of vinyl acetate (VAc), were replaced in situ at the PVAcAcobalt chain-end by tetradentate Salen type ligands that are more suited to acrylates.

show abstract

Ruthenium complexes bearing bidentate Schiff base ligands as efficient catalysts for organic and polymer syntheses

Cited by 229 publications

References 239 publications

Synthesis and Structures of N‐Heterocyclic Carbene–Sulfonate Ruthenium Complexes and Their Applications in the Ring‐Opening Metathesis Polymerization of Norbornene

Synthesis and Structures of N‐Heterocyclic Carbene–Sulfonate Ruthenium Complexes and Their Applications in the Ring‐Opening Metathesis Polymerization of Norbornene

Theoretical Study of the N-(2,5-Methylphenyl)salicylaldimine Schiff Base Ligand: Atomic Charges, Molecular Electrostatic Potential, Nonlinear Optical (NLO) Effects and Thermodynamic Properties

In situ bidentate to tetradentate ligand exchange reaction in cobalt-mediated radical polymerization

Contact Info

Product

Resources

About