107333-47-1Relevant articles and documents
Hydrolytic Studies on (η5-C5Me5)TiMe3; X-Ray Structure of 5-C5Me5)TiMe(μ-O)>3 containing a Ti3O3 Ring
Blanco, Severino Garcia,Sal, M. Pilar Gomez,Carreras, Sagrario Martinez,Mena, Miguel,Royo, Pascual,Serrano, Ricardo
, p. 1572 - 1573 (1986)
Successive hydrolysis of (η5-C5Me5)TiMe3 (2) gives first 5-C5Me5)TiMe2>2(μ-O) (3) and then 5-C5Me5)TiMe(μ-O)>3 (4); the crystal structure of (4) reveals a Ti3O3 ring.
Synthesis, structure, and ethylene/α-olefin polymerization behavior of (cyclopentadienyl)(nitroxide)titanium complexes
Mahanthappa, Mahesh K.,Cole, Adam P.,Waymouth, Robert M.
, p. 836 - 845 (2008/10/09)
Mono-Cp titanium coordination compounds bearing monoanionic ligands derived from stable nitroxyl radicals have been synthesized by two methods: (i) trapping of CpTi(III) species with the stable nitroxyl radical TEMPO (2,2,6,6-tetramethylpiperidine-N-oxyl) to provide Cp′TiCl2(TEMPO) (Cp′ = Cp (1) and Cp* (2)) and (ii) salt metathesis of Ti(IV) halides with a nitroxide anion generated by the in situ methylation of tert-butyl-α-phenylnitrone. Alkylation of these complexes with MeLi or MeMgBr furnishes Cp*TiMe2(TEMPO) (3) and Cp′TiMe2(ON(tBu)(CHMePh)) (Cp′ = Cp(4) and Cp* (5)). The molecular structure of 2 has been determined by X-ray crystallography to reveal a monoanionic η1-TEMPO ligated to titanium. Complexes 3 and 4 activated with iprAFPB (2,6,-diisopropyl-N,N-dimethylanilinium tetrakis(pentafluorophenyl)borate) efficiently copolymerize ethylene and 1-hexene to provide copolymers having higher 1-hexene contents and higher productivities than the related Cp*Ti(CH2Ph)3 under identical conditions. Comparison of structural and electronic features as well as the ethylene/1-hexene copolymerization behavior of 3 and 4 with the constrained geometry catalyst [MeSi2(η5-Me4Cp)(η1-N-tBu)]T iMe2 (6) provides insights into factors governing high comonomer incorporation by mono-Cp titanium complexes.
Preparation of Titanium Pentamethylcyclopentadienyl Trialkyls and Crystal Structure of Tribenzylpentamethylcyclopentadienyltitanium, showing Some Evidence of a CH2...Ti Interaction
Mena, Miguel,Pellinghelli, Maria Angela,Royo, Pascual,Serrano, Ricardo,Tripicchio, Antonio
, p. 1118 - 1119 (2007/10/02)
Titanium pentamethylcyclopentadienyl trialkyls (η5-C5Me5)TiR3 (R = Me, CH2SiMe3, C6F5, and CH2Ph) are easily obtained by conventional alkylation of the trichloro analogue; the structure of the tribenzyl derivative, determined by X-ray methods, shows some evidence of CH2...Ti interaction.
