Molecular Insight into Photocatalytic Reactions by TiO2 Investigated by ATR-IR Spectroscopy (2008)
Dolamic, Igor, Bürgi, Thomas, Stoeckli-Evans, Helen, Kiwi-Minsker, L., Hug, S. J.
Today mankind faces several environmental pollution problems which are a result of our fossil fuels dependence. Water pollution, global warming, air pollution are just several tasks that rapt...
Molecular Insight into Photocatalytic Reactions by TiO2 Investigated by ATR-IR Spectroscopy (2008)
Dolamic, Igor, Bürgi, Thomas, Stoeckli-Evans, Helen, Kiwi-Minsker, L., Hug, S. J.
Today mankind faces several environmental pollution problems which are a result of our fossil fuels dependence. Water pollution, global warming, air pollution are just several tasks that rapt...
Soldermann, Nicolas, Velker, Jörg, Neels, Antonia, Stoeckli-Evans, Helen, Neier, Reinhard
A new tandem reaction leads to bicyclic cyclohexene derivatives with complete control of the relative configuration of the four chiral centers formed. The high diastereoselectivity is the consequence...
Soldermann, Nicolas, Velker, Jörg, Neels, Antonia, Stoeckli-Evans, Helen, Neier, Reinhard
A new tandem reaction leads to bicyclic cyclohexene derivatives with complete control of the relative configuration of the four chiral centers formed. The high diastereoselectivity is the consequence...
Ghali Alhouari, Abdelali Kerbal, Najib Ben Larbi, Brahim Bennani, Taibi Ben Hadda, Helen Stoeckli-Evans
The title compound, C25H20N2O4, is a new spiro-isoxazoline derivative. It contains a five-membered isoxazoline ring (A), a tetralone unit (E and D), a 4-nitrophenyl substituent (B), and a phenyl ring...
3,4-Bis(4-nitrophenyl)-1,2,5-oxadiazole 2-oxide (2008)
Ghali Alhouari, Abdelali Kerbal, Najib Ben Larbi, Taibi Ben Hadda, Maria Daoudi, Helen Stoeckli-Evans
The title compound, C14H8N4O6, a new 1,2,5-oxadiazole N-oxide derivative, was formed by dimerization of 4-nitrobenzaldehyde oxime. The compound crystallizes with two independent molecules per...
A Topology Paradigm for Metal-Organic Zeolites (2007)
Rusanov, Eduard B., Ponomarova, Vira V., Komarchuk, Vasiliy V., Stoeckli-Evans, Helen, Fernandez-Ibañez, Elena, Stoeckli, Fritz, ...
A Topology Paradigm for Metal-Organic Zeolites (2007)
Rusanov, Eduard B., Ponomarova, Vira V., Komarchuk, Vasiliy V., Stoeckli-Evans, Helen, Fernandez-Ibañez, Elena, Stoeckli, Fritz, ...
A Topology Paradigm for Metal-Organic Zeolites (2007)
Rusanov, Eduard B., Ponomarova, Vira V., Komarchuk, Vasiliy V., Stoeckli-Evans, Helen, Fernandez-Ibañez, Elena, Stoeckli, Fritz, ...
Stoeckli, Fritz, Stoeckli-Evans, Helen
Further theoretical calculations have been carried out for the adsorption potentials of Ar on the (011) face of rhombic sulfur, and for Xe and SF6 on the (011) and (111) faces. By using the same...
Stoeckli, Fritz, Stoeckli-Evans, Helen
Further theoretical calculations have been carried out for the adsorption potentials of Ar on the (011) face of rhombic sulfur, and for Xe and SF6 on the (011) and (111) faces. By using the same...
Stoeckli-Evans, Helen, Stoeckli, Fritz
The adsorption potentials of argon on the (111), (001) and (110) planes of rhombic sulfur have been calculated for a total of 818 sites, using an intermolecular potential of the Lennard-Jones (6:12)...
Stoeckli-Evans, Helen, Stoeckli, Fritz
The adsorption potentials of argon on the (111), (001) and (110) planes of rhombic sulfur have been calculated for a total of 818 sites, using an intermolecular potential of the Lennard-Jones (6:12)...
Marty, Maurus, Stoeckli-Evans, Helen, Neier, Reinhard
While attempting to synthesize a potential inhibitor of the biosynthetic step of formation of PBG, a novel catalytic system inducing the Prins reaction was discovered. Treatment of epoxy geranial...
Marty, Maurus, Stoeckli-Evans, Helen, Neier, Reinhard
While attempting to synthesize a potential inhibitor of the biosynthetic step of formation of PBG, a novel catalytic system inducing the Prins reaction was discovered. Treatment of epoxy geranial...
Preparation of N-Alkylketene-N-Butadienyl-N,O-Silyl Acetals (2007)
Franz, Andreas, Eschler, Pierre-Yves, Tharin, Manuel, Stoeckli-Evans, Helen, Neier, Reinhard
The synthesis of a series of dienamides 5a-j using Oppolzer’s method is described. Using Rathke’s method the ketene N,O-silyl acetals 6a-j can be obtained in good yield from the corresponding...
Velker, Jörg, Roblin, Jean-Philippe, Neels, Antonia, Tesouro, Ana, Stoeckli-Evans, Helen, Klaerner, Frank-Gerrit, ...
The new dienes 4a-d, 7 and 11 reacted in good yields with acyclic dienophiles like methyl acrylate and diethyl fumarate in the tandem process Diels-Alder reaction/Ireland-Claisen rearangement....
Preparation of N-Alkylketene-N-Butadienyl-N,O-Silyl Acetals (2007)
Franz, Andreas, Eschler, Pierre-Yves, Tharin, Manuel, Stoeckli-Evans, Helen, Neier, Reinhard
The synthesis of a series of dienamides 5a-j using Oppolzer’s method is described. Using Rathke’s method the ketene N,O-silyl acetals 6a-j can be obtained in good yield from the corresponding...
Velker, Jörg, Roblin, Jean-Philippe, Neels, Antonia, Tesouro, Ana, Stoeckli-Evans, Helen, Klaerner, Frank-Gerrit, ...
The new dienes 4a-d, 7 and 11 reacted in good yields with acyclic dienophiles like methyl acrylate and diethyl fumarate in the tandem process Diels-Alder reaction/Ireland-Claisen rearangement....
Chaperon, André, Bertschy, Hugo, Franz-Schrumpf, Anne-Laurence, Hugelet, Bertrand, Neels, Antonia, Stoeckli-Evans, Helen, ...
The synthesis of a pyrazol analogon of porphobilinogen is described. The Mukaiyama crossed aldol reaction is the key step of our approach. The retrosynthetic analysis follows the mechanism for the...
Chaperon, André, Bertschy, Hugo, Franz-Schrumpf, Anne-Laurence, Hugelet, Bertrand, Neels, Antonia, Stoeckli-Evans, Helen, ...
The synthesis of a pyrazol analogon of porphobilinogen is described. The Mukaiyama crossed aldol reaction is the key step of our approach. The retrosynthetic analysis follows the mechanism for the...
Baak, Marcel, Rubin, Yves, Franz, Andreas, Stoeckli-Evans, Helen, Bigler, Laurant, Nachbauer, Jürgen, ...
Starting from the N-butadienyl-N-alkylpropionamides 1a-1c the corresponding N,0-trimethylsilylacetals could be obtained using the mixture ofLDA and trimethylsilyl chloride in THF. The unexpected...
Baak, Marcel, Rubin, Yves, Franz, Andreas, Stoeckli-Evans, Helen, Bigler, Laurant, Nachbauer, Jürgen, ...
Starting from the N-butadienyl-N-alkylpropionamides 1a-1c the corresponding N,0-trimethylsilylacetals could be obtained using the mixture ofLDA and trimethylsilyl chloride in THF. The unexpected...
rac-(R)-2-[(2R,5R)-5-Methyltetrahydrofuran-2-yl]propanoic acid (2007)
Loiseau, François, Neier, Reinhard, Stoeckli-Evans, Helen
In the crystal structure of the title compound, C8H14O3, the 2,5-tetrahydrofuran ring junction is cis. The relative configuration of position 2 in the propanoic acid group was found to be the...
rac-(R)-2-[(2R,5R)-5-Methyltetrahydrofuran-2-yl]propanoic acid (2007)
Loiseau, François, Neier, Reinhard, Stoeckli-Evans, Helen
In the crystal structure of the title compound, C8H14O3, the 2,5-tetrahydrofuran ring junction is cis. The relative configuration of position 2 in the propanoic acid group was found to be the...
rac-Ethyl 2-bromo-2-[(3R,5R)-3-bromo-5-methyltetrahydrofuran-2-ylidene]acetate (2007)
Loiseau, François, Neier, Reinhard, Labat, Gael, Stoeckli-Evans, Helen
In the title compound, C9H12Br2O3, a (tetrahydrofuran-2-ylidene)acetate, the double bond has the Z form. In the tetrahydrofuran group, the relative configuration of the Br atom in the 3-position and...
rac-Ethyl 2-bromo-2-[(3R,5R)-3-bromo-5-methyltetrahydrofuran-2-ylidene]acetate (2007)
Loiseau, François, Neier, Reinhard, Labat, Gael, Stoeckli-Evans, Helen
In the title compound, C9H12Br2O3, a (tetrahydrofuran-2-ylidene)acetate, the double bond has the Z form. In the tetrahydrofuran group, the relative configuration of the Br atom in the 3-position and...
Iyer, Vijay Mahadevan, Stoeckli-Evans, Helen, Belser, Peter
The title compound, C₃₁H₁₈F₆S₂, is a molecular switch based on dithienylperfluorocyclopentene. The molecule possesses pseudo-C₂ symmetry and has the open form of the switch. There are a...
Iyer, Vijay Mahadevan, Stoeckli-Evans, Helen, Belser, Peter
The title compound, C₃₁H₁₈F₆S₂, is a molecular switch based on dithienylperfluorocyclopentene. The molecule possesses pseudo-C₂ symmetry and has the open form of the switch. There are a...
Heckenroth, Marion, Neels, Antonia, Stoeckli-Evans, Helen, Albrecht, Martin
The palladation of potentially chelating bisimidazolium ligand precursors with palladium acetate gives bridging bimetallic, chelating monometallic, and homoleptic tetracarbene complexes. The...
Heckenroth, Marion, Neels, Antonia, Stoeckli-Evans, Helen, Albrecht, Martin
The palladation of potentially chelating bisimidazolium ligand precursors with palladium acetate gives bridging bimetallic, chelating monometallic, and homoleptic tetracarbene complexes. The...
Albrecht, Martin, Stoeckli-Evans, Helen
Pyridinium salts similar to those used as ionic liquid solvents readily undergo palladation in the presence of a base, thus giving palladium-pyridylidene N-heterocyclic carbene complexes that are...
Albrecht, Martin, Stoeckli-Evans, Helen
Pyridinium salts similar to those used as ionic liquid solvents readily undergo palladation in the presence of a base, thus giving palladium-pyridylidene N-heterocyclic carbene complexes that are...
Drahoňovský, Dušan, Knof, Ulrich, Jungo, Laurence, Belser, Thomas, Neels, Antonia, Labat, Gaël Charles, ...
A C₂-symmetric enantiopure 4,5-bis(pinene)-2,2′-bipyridine ligand (–)-L was used to investigate the diastereoselectivity in the formation of [ML₃]²⁺ coordination species (M = Fe(II),...
Drahoňovský, Dušan, Knof, Ulrich, Jungo, Laurence, Belser, Thomas, Neels, Antonia, Labat, Gaël Charles, ...
A C₂-symmetric enantiopure 4,5-bis(pinene)-2,2′-bipyridine ligand (–)-L was used to investigate the diastereoselectivity in the formation of [ML₃]²⁺ coordination species (M = Fe(II),...
Thomas, Christophe M., Neels, Antonia, Stoeckli-Evans, Helen, Süss-Fink, Georg
The new multifunctional ligand thiophene-2,5-bis(carboxylatomethylenebenzotriazole) (1) reacts with [RhCl(CO)2]2 to give the rhodium complex [RhCl(CO)(1)]2 (2), which was found to catalyse...
Thomas, Christophe M., Neels, Antonia, Stoeckli-Evans, Helen, Süss-Fink, Georg
The new multifunctional ligand thiophene-2,5-bis(carboxylatomethylenebenzotriazole) (1) reacts with [RhCl(CO)2]2 to give the rhodium complex [RhCl(CO)(1)]2 (2), which was found to catalyse...
Ferrand, Vincent, Süss-Fink, Georg, Neels, Antonia, Stoeckli-Evans, Helen
The tetrahedral cluster anion [Ru3Ir(CO)13]- (1) reacts with internal alkynes RCCR to afford the alkyne derivatives [Ru3Ir(CO)11(RCCR)]- (2: R = R’ = Ph; 3: R = R’ = Et; 4: R = Ph; R’ = Me; 5:...
Ferrand, Vincent, Süss-Fink, Georg, Neels, Antonia, Stoeckli-Evans, Helen
The tetrahedral cluster anion [Ru3Ir(CO)13]- (1) reacts with internal alkynes RCCR to afford the alkyne derivatives [Ru3Ir(CO)11(RCCR)]- (2: R = R’ = Ph; 3: R = R’ = Et; 4: R = Ph; R’ = Me; 5:...
Canivet, Jérôme, Labat, Gael, Stoeckli-Evans, Helen, Süss-Fink, Georg
The cationic chloro complexes [(arene)Ru(H2N∩NH2)Cl]+ (1: arene = C6H6; 2: arene = p-MeC6H4iPr; 3: arene = C6Me6) have been synthesised from the corresponding arene ruthenium dichloride dimers and...
Canivet, Jérôme, Labat, Gael, Stoeckli-Evans, Helen, Süss-Fink, Georg
The cationic chloro complexes [(arene)Ru(H2N∩NH2)Cl]+ (1: arene = C6H6; 2: arene = p-MeC6H4iPr; 3: arene = C6Me6) have been synthesised from the corresponding arene ruthenium dichloride dimers and...
Thomas, Christophe M., Mafua, Roger, Therrien, Bruno, Rusanov, Eduard, Stoeckli-Evans, Helen, Süss-Fink, Georg
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 Ph2PC6H4C(O)X(CH2)2OH (4)...
Thomas, Christophe M., Mafua, Roger, Therrien, Bruno, Rusanov, Eduard, Stoeckli-Evans, Helen, Süss-Fink, Georg
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 Ph2PC6H4C(O)X(CH2)2OH (4)...
Laurencin, Danielle, Fidalgo, Eva Garcia, Villanneau, Richard, Villain, Françoise, Herson, Patrick, Pacifico, Jessica, ...
Reactions of the molybdates Na2MoO4•2 H2O and (nBu4N)2[Mo2O7] with [{Ru(arene)Cl2}2] (arene=C6H5CH3, 1,3,5-C6H3(CH3)3, 1,2,4,5-C6H2(CH3)4) in water or organic solvents led to formation of the...
Laurencin, Danielle, Fidalgo, Eva Garcia, Villanneau, Richard, Villain, Françoise, Herson, Patrick, Pacifico, Jessica, ...
Reactions of the molybdates Na2MoO4•2 H2O and (nBu4N)2[Mo2O7] with [{Ru(arene)Cl2}2] (arene=C6H5CH3, 1,3,5-C6H3(CH3)3, 1,2,4,5-C6H2(CH3)4) in water or organic solvents led to formation of the...
Mono-, di- and tetra-nuclear p-cymeneruthenium complexes containing oxalato ligands (2006)
Yan, Hong, Süss-Fink, Georg, Neels, Antonia, Stoeckli-Evans, Helen
The oxalato complexes [Ru2(µ-η4-C2O4)Cl2(η6-p-PriC6H4Me)2] 1 and [Ru(η2-C2O4)(NH3)(η6-p-PriC6H4Me)] 2 have been prepared from the reaction of ammonium oxalate with [{RuCl2(η6-p-PriC6H4Me)}2]...
Mono-, di- and tetra-nuclear p-cymeneruthenium complexes containing oxalato ligands (2006)
Yan, Hong, Süss-Fink, Georg, Neels, Antonia, Stoeckli-Evans, Helen
The oxalato complexes [Ru2(µ-η4-C2O4)Cl2(η6-p-PriC6H4Me)2] 1 and [Ru(η2-C2O4)(NH3)(η6-p-PriC6H4Me)] 2 have been prepared from the reaction of ammonium oxalate with [{RuCl2(η6-p-PriC6H4Me)}2]...
Süss-Fink, Georg, Godefroy, Isabelle, Ferrand, Vincent, Neels, Antonia, Stoeckli-Evans, Helen
The reaction of Na[Ru3H(CO)11] with an excess of tricyclohexylphosphine in methanol afforded, depending on the reaction conditions, the tri-substituted clusters [Ru3(CO)9(PCy3)3] (48e) and...
Süss-Fink, Georg, Haak, Susanne, Ferrand, Vincent, Stoeckli-Evans, Helen
The new cluster anion [Ru3Ir(CO)13]–1 was synthesized in high yield from [Ru3(CO)12] and [Ir(CO)4]–. The single-crystal X-ray structure analysis of the bis(triphenylphosphoranylidene)ammonium...
Süss-Fink, Georg, Stanislas, Sandrine, Shulpin, Georgiy B., Nizova, Galina V., Stoeckli-Evans, Helen, Neels, Antonia, ...
A mixture of [NBu4][VO3] and pyrazine-2-carboxylic acid (Hpca) in acetonitrile catalysed smoothly the reaction of alkanes RH (R = CH3 or C6H11) with molecular oxygen (from air) and hydrogen peroxide...
Süss-Fink, Georg, Godefroy, Isabelle, Ferrand, Vincent, Neels, Antonia, Stoeckli-Evans, Helen
The reaction of Na[Ru3H(CO)11] with an excess of tricyclohexylphosphine in methanol afforded, depending on the reaction conditions, the tri-substituted clusters [Ru3(CO)9(PCy3)3] (48e) and...
Süss-Fink, Georg, Haak, Susanne, Ferrand, Vincent, Stoeckli-Evans, Helen
The new cluster anion [Ru3Ir(CO)13]–1 was synthesized in high yield from [Ru3(CO)12] and [Ir(CO)4]–. The single-crystal X-ray structure analysis of the bis(triphenylphosphoranylidene)ammonium...
Süss-Fink, Georg, Stanislas, Sandrine, Shulpin, Georgiy B., Nizova, Galina V., Stoeckli-Evans, Helen, Neels, Antonia, ...
A mixture of [NBu4][VO3] and pyrazine-2-carboxylic acid (Hpca) in acetonitrile catalysed smoothly the reaction of alkanes RH (R = CH3 or C6H11) with molecular oxygen (from air) and hydrogen peroxide...
Ferrand, Vincent, Süss-Fink, Georg, Neels, Antonia, Stoeckli-Evans, Helen
The mixed-metal cluster [HIrRu3(CO)13] 1 reacts with one equivalent of disubstituted alkynes RC≡CR to give [HIrRu3(CO)11(µ3-η2-RC≡CR)] (R = Ph 2; R = Me 3), with a second equivalent of the...
Ferrand, Vincent, Süss-Fink, Georg, Neels, Antonia, Stoeckli-Evans, Helen
The mixed-metal cluster [HIrRu3(CO)13] 1 reacts with one equivalent of disubstituted alkynes RC≡CR to give [HIrRu3(CO)11(µ3-η2-RC≡CR)] (R = Ph 2; R = Me 3), with a second equivalent of the...
Süss-Fink, Georg, Godefroy, Isabelle, Béguin, Alain, Rheinwald, Gerd, Neels, Antonia, Stoeckli-Evans, Helen
The thermal reaction of the dinuclear complex [Ru2(CO)4(O2CH)2(PCy2H)2] with molecular hydrogen in cyclohexane afforded the tetranuclear clusters [H4Ru4(CO)8(PCy2)4] (64e) and [H5Ru4(CO)8(PCy2)3]...
Bernauer, Klaus, Godefroy, Isabelle, Cabort, Amel, Guicher, Nathalie, Stoeckli-Evans, Helen, Süss-Fink, Georg
The binding of the carbonate anion to [Cu(meso-bpp)(H2O)]2+ and rac-[Cu(bpp)(H2O)]2+ [bpp = 2,6-bis(pyrrolidin-2-yl)pyridine] in aqueous solution has been investigated. Formation constants of the...
Chérioux, Frédéric, Maisse-François, Aline, Neels, Antonia, Stoeckli-Evans, Helen, Süss-Fink, Georg
The electron-deficient (58e) cluster cation [H4Ru4(C6H6)4]2+ 1 was found to react in aqueous solution with simple nucleophiles to give electron-precise (60e) clusters. With carbon monoxide, the...
Süss-Fink, Georg, Plasseraud, Laurent, Ferrand, Vincent, Stoeckli-Evans, Helen
The amphiphilic title compound, easily accessible from (p- cymene)ruthenium dichloride dimer and sodium molybdate in aqueous solution, presents an unprecedented Ru4Mo4O12 framework comprising a...
Süss-Fink, Georg, Plasseraud, Laurent, Ferrand, Vincent, Stoeckli-Evans, Helen
The anionic mixed-metal cluster [Ru3Ir(CO)13]– 1, found to be catalytically active in the carbonylation of methanol, reacts with methanol at 70 °C to give, with O–H activation of the substrate,...
Süss-Fink, Georg, Godefroy, Isabelle, Béguin, Alain, Rheinwald, Gerd, Neels, Antonia, Stoeckli-Evans, Helen
The thermal reaction of the dinuclear complex [Ru2(CO)4(O2CH)2(PCy2H)2] with molecular hydrogen in cyclohexane afforded the tetranuclear clusters [H4Ru4(CO)8(PCy2)4] (64e) and [H5Ru4(CO)8(PCy2)3]...
Bernauer, Klaus, Godefroy, Isabelle, Cabort, Amel, Guicher, Nathalie, Stoeckli-Evans, Helen, Süss-Fink, Georg
The binding of the carbonate anion to [Cu(meso-bpp)(H2O)]2+ and rac-[Cu(bpp)(H2O)]2+ [bpp = 2,6-bis(pyrrolidin-2-yl)pyridine] in aqueous solution has been investigated. Formation constants of the...
Chérioux, Frédéric, Maisse-François, Aline, Neels, Antonia, Stoeckli-Evans, Helen, Süss-Fink, Georg
The electron-deficient (58e) cluster cation [H4Ru4(C6H6)4]2+ 1 was found to react in aqueous solution with simple nucleophiles to give electron-precise (60e) clusters. With carbon monoxide, the...
Süss-Fink, Georg, Plasseraud, Laurent, Ferrand, Vincent, Stoeckli-Evans, Helen
The amphiphilic title compound, easily accessible from (p- cymene)ruthenium dichloride dimer and sodium molybdate in aqueous solution, presents an unprecedented Ru4Mo4O12 framework comprising a...