Novel zwitterionic complexes of Ti(IV) via reaction of Lewis acids M(C6F5)3 (M = B, Al) with a titanium diene complex (η5-C5Me4SiMe2NtBu)Ti(1,3-pentadiene)

被引：49

作者：

Cowley, AH ^{[1
]}

Hair, GS ^{[1
]}

McBurnett, BG ^{[1
]}

Jones, RA ^{[1
]}

机构：

[1] Univ Texas, Dept Chem & Biochem, Austin, TX 78712 USA

来源：

CHEMICAL COMMUNICATIONS | 1999年 / 05期

关键词：

D O I：

10.1039/a809438a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The reaction of (eta 5-(C5Me4SiMe2NBu)-Bu-t)Ti(1,3-pentadiene) with B(C6F5)(3) or Al(C6F5)(3) in 1:1 mole ratio in hexane solution at room temperature results in the formation of titanium borate or aluminate zwitterions which both feature stabilisation of the Ti(IV) centre by two agostic Ti ... H-C interactions.

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收藏

页码：437 / 438

页数：2

相关论文

共 7 条

[1] CONSTRAINED-GEOMETRY TITANIUM(II) DIENE COMPLEXES - STRUCTURAL DIVERSITY AND OLEFIN POLYMERIZATION ACTIVITY [J].

DEVORE, DD ;

TIMMERS, FJ ;

HASHA, DL ;

ROSEN, RK ;

MARKS, TJ ;

DECK, PA ;

STERN, CL .

ORGANOMETALLICS, 1995, 14 (07) :3132-3134

[2] Internal fluorocarbon coordination as a tool for the protection of active catalytic sites: Experimental characterization of the Zr center dot center dot center dot F-C interaction in the group 4 metallocene(butadiene) B(C6F5)(3) betaine Ziegler catalyst systems [J].

Karl, J ;

Erker, G ;

Frohlich, R .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1997, 119 (46) :11165-11173

[3]

KIDD RG, 1983, NMR NEWLY ACCESSIBLE, V2

[4] Formation of a zirconocene-betaine system by electrophilic substitution with B(C6F5)(3) at a cyclopentadienyl ligand [J].

Ruwwe, J ;

Erker, G ;

Frohlich, R .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION IN ENGLISH, 1996, 35 (01) :80-82

[5] Intramolecular ion-ion interactions in zwitterionic metallocene olefin polymerization catalysts derived from ''tucked-in'' catalyst precursors and the highly electrophilic boranes XB(C6F5)(2) (X=H, C6F5) [J].

Sun, YM ;

Spence, REVH ;

Piers, WE ;

Parvez, M ;

Yap, GPA .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1997, 119 (22) :5132-5143

[6] REACTION OF (BUTADIENE)ZIRCONOCENE WITH TRIS(PENTAFLUOROPHENYL)BORANE - A NOVEL WAY OF GENERATING METHYLALUMOXANE-FREE HOMOGENEOUS ZIEGLER-TYPE CATALYSTS [J].

TEMME, B ;

ERKER, G ;

KARL, J ;

LUFTMANN, H ;

FROHLICH, R ;

KOTILA, S .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 1995, 34 (16) :1755-1757

[7] Observing a homogeneous Ziegler catalyst precursor at work: Insertion reactions into the zirconium-carbon bond of the (butadiene)ZrCp(2)/B(C6F5)3 addition product [J].

Temme, B ;

Karl, J ;

Erker, G .

CHEMISTRY-A EUROPEAN JOURNAL, 1996, 2 (08) :919-924