ISSN:
0941-1216
Keywords:
Chemistry
;
Organic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Carbon-branched Poly(phenylcarbosilanes) and DerivativesA series of carbon cross-linked poly(phenylcarbosilanes) was synthesized through the reaction of dichlorodiphenylsilane, α,α,α-trichlorotoluene and dibromomethane with sodium as the reducing agent. The oligomeric and solid products of the general composition [(Ph2Si)n+1,5(PhC) (CH2)n]x (with n = 2, 3, 5 or 10) were analysed and investigated by IR, 1H, 13C, 29Si NMR spectroscopy, and gel permeation chromatography. The ceramic yields were determined via pyrolysis at 1000 °C. The branched poly(carbosilane) [(Ph2Si)4,5(PhC)(CH2)3]x was chlorinated with HCl and the product obtained was transformed by the Grignard reaction with ethynylmagnesiumbromid into the unsaturated poly(carbosilane) [((HC≡C)2Si)4,5(PhC)(CH2)3]x.
Additional Material:
3 Tab.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/prac.199633801138
