Self-supported organometallic rhodium quinonoid nanocatalysts for stereoselective polymerization of phenylacetylene.
J Am Chem Soc
; 128(27): 8740-1, 2006 Jul 12.
Article
em En
| MEDLINE
| ID: mdl-16819862
ABSTRACT
Heterogeneous self-supported organometallic nanocatalysts (ONs) were synthesized by treatment of the eta6-pi-hydroquinone rhodium complex [(1,4-hydroquinone)Rh(COD)]+ with Al(Oi-Pr)3. The organometallic nanocatalysts, the size of which can be controlled by alteration of the reaction conditions, show high catalytic activities in the stereoselective polymerization of phenylacetylene to produce cis-poly(phenylacetylene). A key feature of the ON catalyst synthesis is a facile eta6 to eta4 hapticity change occurring in the quinonoid ring, which is triggered by deprotonation of the -OH groups by Al(Oi-Pr)3, with concomitant coordination of the quinone oxygen atoms to the aluminum.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Compostos Organometálicos
/
Polímeros
/
Quinonas
/
Acetileno
/
Ródio
/
Nanoestruturas
Idioma:
En
Revista:
J Am Chem Soc
Ano de publicação:
2006
Tipo de documento:
Article