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
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页码：274 / 281
页数：8
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