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13 C NMR spectra of the models for the end‐group analysis of polybutadiene
Author(s) -
Podkorytov I. S.,
Lubnin A. V.
Publication year - 1991
Publication title -
magnetic resonance in chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0749-1581
DOI - 10.1002/mrc.1260290604
Subject(s) - chemistry , polybutadiene , pulse sequence , monomer , dept , carbon 13 nmr , nmr spectra database , spectral line , proton , group (periodic table) , nuclear magnetic resonance spectroscopy , proton nmr , polymer chemistry , stereochemistry , crystallography , nuclear magnetic resonance , organic chemistry , polymer , copolymer , physics , quantum mechanics , astronomy
The 13 C NMR spectra of models for the initial and terminal monomeric unit diads of polybutadiene are interpreted. The models are C 10 H 18 , diolefins, separated from the mixture of oligomers which are formed in the reaction of buta‐1,3‐diene with ethyllithium and a proton donor. A version of the INADEQUATE pulse sequence with DEPT polarization transfer and a selective DANTE read pulse is described and used for assignment.