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Titolo:
Titanium and zirconium complexes with sterically hindered aryl-substitutediminophosphoranato ligands
Autore:
Said, M; Thornton-Pett, M; Bochmann, M;
Indirizzi:
Univ E Anglia, Sch Chem Sci, Wolfson Mat & Catalysis Ctr, Norwich NR4 7TJ,Norfolk, England Univ E Anglia Norwich Norfolk England NR4 7TJ ch NR4 7TJ,Norfolk, England Univ Leeds, Sch Chem, Leeds LS2 9JT, W Yorkshire, England Univ Leeds Leeds W Yorkshire England LS2 9JT S2 9JT, W Yorkshire, England
Titolo Testata:
JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS
fascicolo: 19, , anno: 2001,
pagine: 2844 - 2849
SICI:
1472-7773(20011007):19<2844:TAZCWS>2.0.ZU;2-O
Fonte:
ISI
Lingua:
ENG
Soggetto:
PHOSPHORANEIMINATO COMPLEXES; CRYSTAL-STRUCTURES; POLYMERIZATION; ETHYLENE; NICKEL; METHANIDE; CHELATE; COBALT; AMIDES; IRON;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
49
Recensione:
Indirizzi per estratti:
Indirizzo: Bochmann, M Univ E Anglia, Sch Chem Sci, Wolfson Mat & Catalysis Ctr, Norwich NR4 7TJ,Norfolk, England Univ E Anglia Norwich Norfolk England NR4 7TJorfolk, England
Citazione:
M. Said et al., "Titanium and zirconium complexes with sterically hindered aryl-substitutediminophosphoranato ligands", J CHEM S DA, (19), 2001, pp. 2844-2849

Abstract

The benzyliminophosphorane 4-(BuC6H4CH2P)-C-t(Ph)(2) =NC6H2Me3-2,4,6 reacted with TiCl4 or ZrCl4 to give the N-donor adducts, MCl4{4-(BuC6H4CH2P)-C-t(Ph)(2) =NC6H2Me3-2,4,6}. Whereas the zirconium compound proved unreactive,solutions of the titanium analogue at 10-20 degreesC slowly underwent C-H activation to give the phosphoranato complex TiCl3{4-(BuC6H4CHP)-C-t(Ph)(2)=NC6H2Me3-2,4,6}. The trichloro complexes MCl3{4-ButC(6)H(4)- CHP(Ph)(2)=NC6H2Me3-2,4,6} were also accessible from Li[4-(BuC6H4CHP)-C-t(Ph)(2)=NC6H2Me3-2,4,6] and MCl4 (M = Ti or Zr). The reaction of 4-(BuC6H4CH2P)-C-t(Ph)(2)=NC6H2Me3-2,4,6 with Zr(NMe2)(4) in refluxing toluene led to Zr(NMe2)(3)- {4-(BuC6H4CHP)-C-t(Ph)(2)=NC6H2Me3-2,4,6}. The compound is fluxional in solution. Treatment with an excess of Me-3- SiCl led to silylation of the ligand to give ZrCl4{4-(BuC6H4CH)-C-t(SiMe3)P(Ph)(2)=NC6H2Me3-2,4,6}. The structures of 4-(BuC6H4CH2P)-C-t(Ph)(2)=NC6H2Me3-2,4,6 and Zr(NMe2)(3){4-(BuC6H4CHP)-C-t(Ph)(2) =NC6H2Me3-2,4,6} were determined by X-ray diffraction.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/09/20 alle ore 05:22:08