Titanium Complexes Supported by an [OSSO]-Type Bis(phenolato) Ligand Based on a trans-eCyclooctanediyl Platform: Synthesis, Structures, and 1-Hexene Polymerization

被引：31

作者：

Nakata, Norio ^{[1
]}

Toda, Tomoyuki ^{[1
]}

Matsuo, Tsukasa ^{[2
]}

Ishii, Akihiko ^{[1
]}

机构：

[1] Saitama Univ, Grad Sch Sci & Engn, Dept Chem, Sakura Ku, Saitama 3388570, Japan

[2] RIKEN Adv Sci Inst, Funct Elementoorgan Chem Unit, Wako, Saitama 3510198, Japan

来源：

INORGANIC CHEMISTRY | 2012年 / 51卷 / 01期

关键词：

ISOSPECIFIC STYRENE POLYMERIZATION; GROUP-4; COMPLEXES; TETRADENTATE; CATALYSTS; CONTAIN; BEARING; RING; SITE; ENCHAINMENT;

D O I：

10.1021/ic2016484

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

trans-Cyclooctanediyl-bridged [OSSO]-type ligand 4 reacts with TiCl4(thf)(2) in toluene to produce the corresponding titanium(IV) dichloro complexes as an inseparable mixture of cis-alpha isomer 6a and cis-beta isomer 6b in a ratio of 2:1, whereas treatment of dilithio salt of 4 with TiCl3(thf)(3) in Et2O afforded chloride-bridged dimeric titanium(III) complex 8, which indicated the antiferromagnetic character in a nonpolar solvent solution. Di(isopropoxy) titanium(IV) complex 10 having a C-2-symmetric cis-alpha configuration was synthesized by the reaction of 4 with Ti((OPr)-Pr-i)(4) in toluene as yellow crystals. Moreover, the reaction of 4 with Ti(NEt2)(4) in toluene resulted in the unexpected formation of [OSSO]-type bis(phenolato)-bridged dinuclear

引用

页码：274 / 281

页数：8