Institut Francais Du Pe'trole

Centre National De La Recherche Scientifique

University of Nebraska

Atochem

Produits Chimiques Ugine Kuhlmann

UniversitÉde Strasbourg

Pierre Braunstein

Lucien Saussine

Jacques Kervennal

Fredy Speiser

Peter A Dowben

Jean-Marie Cognion

Bernard Doudin

Lucie Routaboul

Guillaume Dalmas

Zhengzheng Zhang

Jean-Luc Richert

Michel Ries

The invention relates to the use of zwitterionic molecules for forming a hole or electron transport layer. The preferred zwitterionic molecules of the invention are derivatives of p-benzoquinonemonoimines. The invention is useful in the field of electronic devices in particular.

Use of zwitterionic molecules for forming a hole or electron transport layer

A catalyst for the oligomerization of olefins, especially ethylene contains:

Organometallic complexes that comprise bidentate chelating ligands that combine a nitrogen-containing heterocyclic compound with an alcohol and their use for catalyzing the oligomerization of olefins

A catalytic composition for oligomerizing olefins, in particular ethylene, comprises mixing at least one nickel complex, prepared by reacting a nickel salt with a phosphonite ligapd, with at least one hydrocarbylaluminum compound in a molar proportion with respect to the nickel of not more than 8&#x2033; and selected from the group formed by tris(hydrocarbyl)aluminum compounds, chlorinated or brominated hydrocarbylaluminum compounds and aluminoxanes.

Organometallic complexes comprising phosphonite ligands, and their use in catalyzing olefin oligomerization

Heteropolymetallic clusters of the formula Pd.sub.2 (Fe).sub.x (CO).sub.4 [CO(NO).sub.2 ].sub.y [bis(diphenylphosphine)methane].sub.2 wherein x is 1 or 2 and y is 0 or 1; x=2 when y=1 and x=1 when y=0; to the method of making such clusters by reacting Pd.sub.2 Cl.sub.2 [bis(diphenylphosphine)methane] with MnFe(CO).sub.3 Z wherein M is an alkaline metal and Z is CO (n=2) or NO (n=1); and to the novel catalysts formed utilizing said clusters.

Heteropolymetallic clusters, methods of making such clusters, and

A process for the manufacture of aromatic isocyanates by carbonylation of nitro derivatives comprising carrying out the reaction in the presence of supported catalysts containing as the active phase particles or an oxide of a precious metal of Group VIII and of a metal selected from Group V.sub.B, VI.sub.B, and VIII of the Periodic Table; the precursor of the active phase being a heteropolymetallic complex and, more particularly, a mixed bimetallic cluster.

Process for the manufacture of aromatic isocyanates

Growing community of inventors

Strasbourg, France

Pierre Braunstein