Synthesis of zirconocene-acetylene and zirconocene-diacetylene polymer

Citation
Pk. Sahoo et Sk. Swain, Synthesis of zirconocene-acetylene and zirconocene-diacetylene polymer, J POL SC PC, 37(21), 1999, pp. 3899-3902
Citations number
20
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
ISSN journal
0887-624X → ACNP
Volume
37
Issue
21
Year of publication
1999
Pages
3899 - 3902
Database
ISI
SICI code
0887-624X(19991101)37:21<3899:SOZAZP>2.0.ZU;2-6
Abstract
A new class of organometallic polymer having a backbone of conjugated Poly- yne and Zr-metal atoms has been prepared. Trichloroethylene (TCE) and Hexac hlorobutadiene (HCB) are quantitatively converted by n-butyllithium to dili thioacetylene (LiC=CLi) and dilithiodiacetylene (Li-C=C-C=C-Li) respectivel y. Quenching with Cp-2*ZrCl2 affords high yields of the polymers [Zr(Cp-2*) C=C](n) and [Zr(Cp-2*)C=C-C=C](n) where Cp* = C-5(CH3)(5) = pentamethyl cyc lopentadienyl. The Cp-2*ZrCl2 and the polymers were characterized by viscos ity, molecular weight, elemental analysis, FTIR, NMR spectra, and TGA. (C) 1999 John Wiley & Sons, Inc.