Formation of Neutral and Cationic Methyl Derivatives of Titanium Containing Cyclopentadienyl and Aryloxide Ancillary Ligation

Autor:	Ian P. Rothwell, Brigitte Hanna, Khamphee Phomphrai, Christine A. Trefun, Phillip E. Fanwick, Jonathan S. Vilardo, Matthew G. Thorn, Andrew E. Fenwick
Rok vydání:	2004
Předmět:	Ligand Organic Chemistry Cationic polymerization chemistry.chemical_element Ether Crystal structure Medicinal chemistry Inorganic Chemistry chemistry.chemical_compound Cyclopentadienyl complex chemistry Organic chemistry Phenol Physical and Theoretical Chemistry Titanium
Zdroj:	Organometallics. 23:2146-2156
ISSN:	1520-6041 0276-7333
Popis:	The series of dimethyltitanium compounds [CpTi(OAr)Me2], ligated by one cyclopentadienyl (Cp) and one 2,6-disubstituted aryloxide (OAr), have been prepared by the reaction of [CpTi(OAr)Cl2] with 2 equiv of LiMe or by the addition of parent phenol (HOAr) to a cold ether solution of [CpTiMe3]. The compounds are stable, except for those containing less bulky o-methyl substituents; the compounds [CpTi(OC6H2Me2-2,6-X-4)Me2] (X = H (19), Br (20)) undergo ligand exchange to produce [CpTi(OC6H2Me2-2,6-X-4)2Me] (X = H (22), Br (23)) and [CpTiMe3]. X-ray crystal structures have been obtained for the dimethyl compounds [CpTi(OC6H2Np-2-But2-4,6)Me2] (13), [CpTi(OC6H2{C10H9}-2-But2-4,6)Me2] (14), [Cp*Ti(OC6HPh2-2,6-But2-3,5)Me2] (15), [CpTi(OC6Ph4-2,3,5,6-Br-4)Me2] (18), [CpTi(OC6H2Me2-2,6-Br-4)Me2] (20), [CpTi(OC6H3Pri2-2,6)Me2] (21), and the monomethyl species 23. Reaction of the dimethyl compounds with [B(C6F5)3] generates the corresponding cationic methyl species [CpTi(OAr)Me][MeB(C6F5)3]. The compound [CpTi(OC6HP...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b25c4a3f810dca36d7b09f8f6f51d0b2 https://doi.org/10.1021/om0341404 Zobrazit plný text záznamu