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Titolo:
REACTIONS OF (ME3ECH2)(3)ZRSI(SIME3)(3) (E = C, SI) WITH 2,6-DIMETHYLPHENYL ISOCYANIDE - PREFERENTIAL ISOCYANIDE INSERTION INTO ZR-SILYL BONDS
Autore:
WU ZZ; MCALEXANDER LH; DIMINNIE JB; XUE ZL;
Indirizzi:
UNIV TENNESSEE,DEPT CHEM KNOXVILLE TN 37996 UNIV TENNESSEE,DEPT CHEM KNOXVILLE TN 37996
Titolo Testata:
Organometallics
fascicolo: 22, volume: 17, anno: 1998,
pagine: 4853 - 4860
SICI:
0276-7333(1998)17:22<4853:RO((=C>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
ANIONIC PI-LIGANDS; ALPHA-AGOSTIC INTERACTIONS; X-RAY STRUCTURE; CRYSTAL-STRUCTURE; CARBON-MONOXIDE; COMPLEXES FREE; TRIS(TRIMETHYLSILYL)SILYL DERIVATIVES; SPECTROSCOPIC PROPERTIES; METATHESIS MECHANISM; MIGRATORY INSERTION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
79
Recensione:
Indirizzi per estratti:
Citazione:
Z.Z. Wu et al., "REACTIONS OF (ME3ECH2)(3)ZRSI(SIME3)(3) (E = C, SI) WITH 2,6-DIMETHYLPHENYL ISOCYANIDE - PREFERENTIAL ISOCYANIDE INSERTION INTO ZR-SILYL BONDS", Organometallics, 17(22), 1998, pp. 4853-4860

Abstract

The reactions of alkyl silyl complexes (Me3ECH2)(3)ZrSi(SiMe3)(3) [E =C (1), Si (2)] with 2,6-dimethylphenyl isocyanide (ArNC) have been investigated. The first ArNC was found to insert exclusively into the Zr-Si bond, and the second and third ArNC into the Zr-C bonds in 1 and 2. 1 and 2 react with up to 3 equiv of ArNC to give (Me3ECH2)(3)Zr{eta(2)-C[Si-(Si-Me-3)(3)]=NAr} [E = C (3), Si (4)], a(2)-C(CH2EMe3)=NAr]{eta(2)-C[Si(SiMe3)(3)[]=NAr}E = C (5), Si (6)], and (2)-C(CH2EMe3)=NAr](2){eta(2)-C[Si(SiMe3)(3)]=NAr} [E = C (7), Si (8)]. The tri-insertioncomplexes 7 and 8 are inert to excess ArNC. The structures of 3 and 7have been determined by X-ray crystallography. In the structure of 3,the alpha-hydrogen atoms on one neopentyl ligand lie in close contact(av 2.41 Angstrom) with the metal center giving rise to Zr-C-H alpha bond angles of 90 and 92 degrees. The crystal structure of the precursor 1 has also been determined.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/12/20 alle ore 15:20:24