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Université de Neuchâtel

Rhodium(I) iminophosphine poly(propyleneimine) dendrimers: Synthesis, characterization and molecular structure of a mononuclear analogue

Antonels, Nathan C. ; Therrien, Bruno ; Moss, John R. ; Smith, Gregory S.

In: Inorganic Chemistry Communications, 2009, vol. 12, no. 8, p. 716-719

First (G1)- and second-generation (G2) poly(propyleneimine) (PPI) dendrimers were reacted with 2-(diphenylphosphino)benzaldehyde, to form iminophosphine-functionalised dendritic ligands (1, 2). The reaction of the dimeric precursor [RhCl(CO)2]2 with the heterobidentate dendritic ligands 1, 2 gave the corresponding rhodium(I)...

Université de Neuchâtel

Synthesis and characterization of fullerene-pyridyl arene ruthenium complexes

Appavoo, Divambal ; Deschenaux, Robert ; Therrien, Bruno

In: Studia Universitatis Babes-Bolyai. Chemia, 2015, vol. 60, no. 4, p. 229-238

Association of [60]fullerene with arene ruthenium moieties has been achieved for the first time. Two fullerenopyrrolidine derivatives (Npyr-C60) were synthesized via a 1,3-dipolar cycloaddition, and coordinated to arene ruthenium complexes to form two half-sandwich complexes of the general formula...

Université de Neuchâtel

NMR spectroscopy and DFT calculations of a self-assembled arene ruthenium rectangle obtained from a combination of coordination and hydrogen bonds

Appavoo, Divambal ; Raja, Nandhagopal ; Deschenaux, Robert ; Therrien, Bruno ; Carnevale, Diego

In: Dalton Transactions, 2016, vol. 45, no. 4, p. 1410-1421

The hydrogen-bonded arene ruthenium metalla-rectangle, [(p-cymene) 2Ru2(OOnOO)(UPy)2]24+ , obtained from 1-(4-oxo-6-undecyl-1,4-dihydropyrimidin-2-yl)-3-(pyridin-4- ylmethyl)urea (UPy) and the dinuclear arene ruthenium clip (p-cymene) 2Ru2(OOnOO)Cl2 (OOnOO = 2,5-dioxido-1,4- benzoquinonato), is investigated by...

Université de Neuchâtel

Combining coordination and hydrogen-bonds to form arene ruthenium metalla-assemblies

Appavoo, Divembal ; Carnevale, Diego ; Deschenaux, Robert ; Therrien, Bruno

In: Journal of Organometallic Chemistry, 2016, vol. 824, p. 80-87

Three ureido-pyrimidone derivatives (N-LH) were used to generate in combination with four dinuclear arene ruthenium clips, (p-cymene) 2Ru2(OO boolean AND OO)Cl2 (OO boolean AND OO = oxalato, 2,5-dioxido-1,4-benzoquinonato, 2,5-dichloro-1,4-benzoquinonato, 5,8-dioxido-1,4-naphtoquinonato), twelve cationic arene ruthenium metalla-cycles of the...

Université de Neuchâtel

The Adaptable Coordination Chemistry of 6-Chloro-2-(quinolin-2-yl)-2,4-dihydro-1H-benzo[d][1,3]oxazine Towards Zinc(II) and Mercury(II)

Attilio Ardizzoia, G. ; Brenna, Stefano ; Therrien, Bruno

In: European Journal of Inorganic Chemistry, 2010, vol. 2010, no. 21, p. 3365-3371

The coordination chemistry of 6-chloro-2-(quinolin-2-yl)-2,4-dihydro-1H-benzo[d][1,3]oxazine (LH2) towards zinc and mercury has been explored. The ligand exhibits high versatility and provides different environments to the metal centre as a function of its diverse coordination modes. In one of the isolated and characterized complexes,...

Université de Neuchâtel

Dinuclear ruthenium sawhorse-type complexes containing bridging ligands with ferrocenyl substituents in endo/endo, endo/exo and exo/exo orientations

Auzias, Mathieu ; Therrien, Bruno ; Labat, Gaël ; Stoeckli-Evans, Helen ; Süss-Fink, Georg

In: Inorganica Chimica Acta, 2006, vol. 359, p. 1012-1017

The dinuclear ruthenium complexes Ru2(CO)4(OOCC5H4FeC5H5)2L2 (L = NC5H5: 1, L = PPh3: 2) have been synthesized from Ru3(CO)12, ferrocene carboxylic acid and pyridine or triphenylphosphine, respectively. The single-crystal X-ray structure analysis reveals...

Université de Neuchâtel

Ru2(CO)4(OOCR)2(PPh3)2 sawhorse-type complexes containing μ2-η2-carboxylato ligands derived from biologically active acids

Auzias, Mathieu ; Therrien, Bruno ; Süss-Fink, Georg

In: Inorganica Chimica Acta, 2006, vol. 359, no. 1, p. 3412-3416

The thermal reaction of Ru3(CO)12 with the biologically active acids acetyl salicylic acid (Aspirin), α-methyl-4-(isobutyl)phenylacetic acid (Ibuprofen) and 3α,7α,12α-trihydroxy-5β-cholanic acid (cholic acid) in refluxing tetrahydrofuran, followed by addition of triphenylphosphine, gives the dinuclear complexes Ru2 (CO)...

Université de Neuchâtel

Tetra- and hexanuclear cage molecules based on diruthenium tetracarbonyl sawhorse units: Synthesis and molecular structure of [{Ru2(CO)4 (PPh3)2}2 (O2CCH2CO2)2] and [{Ru2(CO)4 (PMe3)2}3 (O2CC6H4CO2)3]

Auzias, Mathieu ; Therrien, Bruno ; Süss-Fink, Georg

In: Inorganic Chemistry Communications, 2007, vol. 10, no. 12, p. 1420-1424

The thermal reaction of Ru3 (CO)12 with malonic acid, followed by the addition of the corresponding ligand, yields the tetranuclear ruthenium complexes [{Ru2 (CO) 4L2}2 (O2CCH2CO2)2] (L = PPh3: 1, L = 3,5-Me2NC5H3: 2), while the...

Université de Neuchâtel

Synthesis, structure and electrochemistry of cationic diruthenium complexes of the type [(N∩N)2Ru2 (CO)2 (μ-CO)2(μ-OOCFc)]+ containing a ferrocenecarboxylato bridge and two chelating aromatic diimine ligands

Auzias, Mathieu ; Therrien, Bruno ; Süss-Fink, Georg ; Štěpnička, Petr ; Ludvík, Jiří

In: Journal of Organometallic Chemistry, 2007, vol. 692, no. 4, p. 755-760

The dinuclear bis(ferrocenecarboxylato) complex Ru2 (CO)4 (μ-OOCFc)2 (py)2 (Fc = ferrocenyl, py = pyridine) was found to react with aromatic diimines (2,2′-dipyridyl, 4,4′-dimethyl-2,2′-dipyridyl, 1,10-phenanthroline, 5-nitro-1,10-phenanthroline, and 5-amino-1,10-phenanthroline) in methanol to give the cationic diruthenium complexes...

Université de Neuchâtel

Di-μ-pivalamidato-bis[dicarbonyl(triphenylphosphine)ruthenium(II)](Ru-Ru)

Auzias, Mathieu ; Therrien, Bruno ; Süss-Fink, Georg

In: Acta Crystallographica Section E, 2005, vol. 61, no. 11, p. 2426-2427

The title dinuclear ruthenium complex, [Ru2 (C5H19NO)2 (C18H15P)2 (CO)4], has been synthesized from Ru3 (CO)12, pivalamide and triphenylphosphine. The structure shows a Ru2 (CO)4 sawhorse backbone with the two OCNH bridges being transoid with respect to each other.