Chemistry and Physics Faculty Articles

Title

Synthesis and Reactivity of a Tethered Diene Cyclopentadiene, (C5Me4H)SiMe2(CH2CH=CHCH=CH2), and Its Alkali Metal Salts

Document Type

Article

Publication Date

2003

Publication Title

Journal of Organometallic Chemistry

Keywords

Cyclopentadienyl, Tethered diene, Tetramethylcyclopentadienyl, Bent metallocene, Potassium, Titanium

ISSN

0022-328X

Volume

688

Issue/No.

1-2

First Page

200

Last Page

205

Abstract

(C5Me4H)SiMe2Cl reacts with (THF)KCH2CH=CHCH=CH2 to form (C5Me4H)SiMe2(CH2CHCHCHCH2) (1). Compound 1 reacts with KH and n-BuLi to make M(C5Me4)SiMe2(CH2CHCHCHCH2), M=K, 2; Li, 3, respectively. Carbon–silicon cleavage occurs when 1 reacts with K to form (C5Me4H)K, which crystallizes from dimethoxyethane as [(C5Me4H)K(DME)]x. This potassium salt has an extended structure which generates bent metallocene (C5Me4H)2K(DME) sub-structures which have 133.9° ring centroidKring centroid angles. Compound 1 reacts with TiCl4 to make (C5Me4H)TiCl3 (5), which has a piano stool structure.

Comments

©2003 Elsevier B.V. All rights reserved.

DOI

10.1016/j.jorganchem.2003.09.013

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Peer Reviewed

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