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Characterization of Carbon Monoxide Centered Triads in Poly[ethylene‐ co ‐(butyl acrylate)‐ co ‐( 13 C‐carbon monoxide)] by Isotopic Labeling and Two‐Dimensional NMR
Author(s) -
AlAmri Abdullah,
Monwar Masud,
McCord Elizabeth F.,
Buback Michael,
Latz Henning,
Rinaldi Peter L.
Publication year - 2005
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.200400541
Subject(s) - carbon monoxide , heteronuclear molecule , chemistry , triad (sociology) , ethylene , methyl acrylate , copolymer , acrylate , nuclear magnetic resonance spectroscopy , carbon 13 , two dimensional nuclear magnetic resonance spectroscopy , carbon 13 nmr , polymer , butyl acrylate , nmr spectra database , monoxide , polymer chemistry , stereochemistry , spectral line , organic chemistry , catalysis , psychology , psychoanalysis , physics , quantum mechanics , astronomy
Summary: Poly[ethylene‐ co ‐(butyl acrylate)‐ co ‐(carbon monoxide)] (polyEBC) samples, prepared from 13 C‐labeled carbon monoxide, were characterized using two dimensional (2D) pulsed field gradient (PFG) 750 MHz NMR spectroscopy. To elucidate the complex mixture of structures present in this terpolymer, 2D 1 H/ 13 C‐heteronuclear multiple bond correlation (HMBC) experiments were conducted by selectively exciting the enhanced peaks resulting from 13 C‐labeling. High resolution 2D NMR combined with 13 C‐labeling of the polymer greatly simplifies the 2D NMR spectra, selectively enhances the weak peaks from low occurrence C‐centered triad structures and aids in their resonance assignments.