Université de Neuchâtel

Self-assembled chloro-bridged metallo-prismatic cations of the general formula [M6 (η5-C5Me5)6 (μ3-tpt)2 (μ-Cl)6]6+ (M = Rh, Ir; tpt = 2,4,6-tri(pyridin-4-yl)-1,3,5-triazine)

Govindaswamy, Padavattan ; Süss-Fink, Georg ; Therrien, Bruno

In: Inorganic Chemistry Communications, 2007, vol. 10, no. 12, p. 1489-1492

Two cationic pentamethylcyclopentadienyl metal-based hexanuclear complexes with trigonal prismatic architecture have been synthesised through a two-step strategy. The dinuclear complexes [M(η5- C5Me5)(μ-Cl)Cl]2 (M = rhodium and iridium) react with 2,4,6-tri(pyridin-4-yl)-1,3,5-triazine (tpt) in dichloromethane to give the trinuclear complexes...

Université de Neuchâtel

New aryl phosphinite ligands avoiding ortho-metallation: Synthesis and molecular structures of trans-[PdCl2(PPh2OR)2] and trans-[Rh(CO)Cl(PPh2OR) 2] (R = 2,4,6-Me3C6H2; 2,6-Ph2C6H3)

Chahen, Ludovic ; Karmazin-Brelot, Lydia ; Süss-Fink, Georg

In: Inorganica Chimica Acta, 2005, vol. 358, no. 12, p. 3417-3422

The new aryl phosphinites PPh2OR (R = 2,4,6-Me3C6H2, 1; R = 2,6-Ph2C6H3, 2) have been prepared from chlorodiphenylphosphine and the corresponding phenols. In these ligands, the ortho-positions of the aromatic phosphite function are blocked by methyl and phenyl substituents, which allows coordination to metal...

Université de Neuchâtel

An iterative strategy for the synthesis of oligothiophenes by catalytic cross-coupling reactions

Pinault, Thomas ; Chérioux, Frédéric ; Therrien, Bruno ; Süss-Fink, Georg

In: Heteroatom Chemistry, 2004, vol. 15, p. 121 - 126

An iterative strategy for the synthesis of new sulfur-functionalized oligothiophenes by Suzuki or Stille cross-coupling reactions was applied to the reaction of 4-bromo-tert-butylphenylthioether with thiophene derivatives. The planarity of the oligothiophenes obtained was confirmed by the single-crystal X-ray structure analysis of 2-(4-tert-butylthiophenyl)thiophene, which shows a potentially...

Université de Neuchâtel

Dendritic Systems Based on Dinuclear Ruthenium or Rhodium Units Generating Peripheral Catalytic Sites

Chérioux, Frédéric ; Thomas, Christophe M. ; Therrien, Bruno ; Süss-Fink, Georg

In: Chemistry - A European Journal, 2002, vol. 8, p. 4377 - 4382

A series of dendritic cations 1-4 containing Ru2S3 or Rh2S3 units, either in the core or in the dendrons, has been synthesized and characterized. The X-ray crystal structure analysis of 2-Cl shows a trigonal bipyramidal Rh2S3 core with propeller-like para-hydroxyphenyl substituents at the sulfur atoms. Reaction...

Université de Neuchâtel

New Diphosphine Ligands Containing Ethyleneglycol and Amino Alcohol Spacers for the Rhodium-Catalyzed Carbonylation of Methanol

Thomas, Christophe M. ; Mafua, Roger ; Therrien, Bruno ; Rusanov, Eduard ; Stoeckli-Evans, Helen ; Süss-Fink, Georg

In: Chemistry - A European Journal, 2002, vol. 8, p. 3343 - 3352

The new diphosphine ligands Ph2PC6H4C(O)X(CH2)2OC(O)C6H4PPh2 (1: X=NH; 2: X=NPh; 3: X=O) and Ph2PC6H4C(O)O(CH2)2O(CH2)2OC(O)C6H4PPh2 (5) as well as the monophosphine ligand...