Nanoparticles of co complexes of zero-valent metals that can be used as hydrosilylation and dehydrogenative silylation catalysts
AssigneesElkem Silicones France SAS, Universite Claude Bernard Lyon I, Cpe Lyon Formation Continue Et Recherche—Cpe Lyon Cfr, Centre National de la Recherche Scientifique (CNRS)
InventorsValérie Meille, Chlóe Thieuleux, Laurent Veyre, Iurii Suleimanov, Thomas Galeandro-Diamant, Magali Bousquie
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Abstract
Nanoparticles that can be used as hydrosilylation and dehydrogenative silylation catalysts. The nanoparticles have at least one transition metal with an oxidation state of 0, chosen from the metals of columns 8, 9 and 10 of the periodic table, and at least one carbonyl ligand, preferably a silicide.
Claims9
A method for preparing hydrosilylation and/or dehydrogenative silylation products by reaction:
- between an unsaturated compound A which is a compound comprising at least one unsaturation that is not part of an aromatic cycle, and
- a compound B comprising at least one hydrogenosilyl function,
- wherein said method is catalysed
- (i) either by nanoparticles having an average diameter, determined by transmission electron microscopy, less than or equal to 50 nm, and comprising:
- at least one transition metal with an oxidation state of 0, chosen from the metals of columns 8, 9 and 10 of the periodic table,
- at least one carbonyl ligand, and
- at least one silicide wherein said silicide is chosen from compounds having formula (I):
- YpZ4qSiHr (I)
- wherein:
- the symbol(s) Y, identical or different, represent a metal chosen from the metals of columns 8, 9 and 10 of the periodic table;
- the symbol(s) Z4, identical or different, represent an alkyl group having from 1 to 18 carbon atoms inclusive;
- p=1, 2 or 3;
- q=1, 2 or 3;
- r=0, 1 or 2;
- p+q+r=4
- (ii) or by a colloidal suspension comprising said nanoparticles.
A composition X comprising:
- at least one unsaturated compound A which is a compound comprising at least one unsaturation that is not part of an aromatic cycle,
- at least one compound B comprising at least one hydrogenosilyl function, and
- (i) either nanoparticles having an average diameter, determined by transmission electron microscopy, less than or equal to 50 nm, and comprising:
- at least one transition metal with an oxidation state of 0, chosen from the metals of columns 8, 9 and 10 of the periodic table,
- at least one carbonyl ligand, and
- at least one silicide wherein said silicide is chosen from compounds having formula (I):
- YpZ4qSiHr (I)
- wherein:
- the symbol(s) Y, identical or different, represent a metal chosen from the metals of columns 8, 9 and 10 of the periodic table;
- the symbol(s) Z4, identical or different, represent an alkyl group having from 1 to 18 carbon atoms inclusive;
- p=1, 2 or 3;
- q=1, 2 or 3;
- r=0, 1 or 2;
- p+q+r=4
- (ii) or a colloidal suspension comprising said nanoparticles.
Dependencies are inferred from the claim text.