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Inne
N-heterocyclic carbene complexes of cyclopentadienylnickel(II): synthesis, structure and catalytic activity in styrene polymerization.
Autorzy
Rok wydania
2006
Czasopismo
Journal of Molecular Catalysis A-Chemical
Numer woluminu
257
Strony
118-123
DOI
10.1016/j.molcata.2006.05.061
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
Cyclopentadienylnickel(II) complexes with N-heterocyclic carbenes [NiCp(X)(NHC)] (X = Cl, Br or CH3), combined with MAO have been used as catalysts for the polymerization of styrene. The catalytic activity of the systems depended mainly on the ease of the abstraction of X substituent by MAO and the stabilization of cationic species [NiCp(NHC)]+. The molecular structures of three title complexes have been determined by single-crystal X-ray diffraction. All three compounds crystallize in monoclinic crystal system with four molecules in the unit cell. Their structural parameters have been compared with data reported for similar complexes. Two of these complexes [NiCp(CH3)(IMes)] and [NiCp(CH3)(SIMes)] are the first examples of structurally characterized (unsubstituted)-cyclopentadienylnickel methyl compounds.
Słowa kluczowe
Nickel, Styrene, Polymerization, N-Heterocyclic carbene, Crystal structure
Adres publiczny
https://doi.org/10.1016/j.molcata.2006.05.061
Strona internetowa wydawcy
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