Characterization of Carbon Monoxide Centered Triads in Poly[ethylene-co-(butyl acrylate)-co-(13C-carbon monoxide)] by Isotopic Labeling and Two-Dimensional NMR
✍ Scribed by Abdullah Al-Amri; Masud Monwar; Elizabeth F. McCord; Michael Buback; Henning Latz; Peter L. Rinaldi
- Publisher
- John Wiley and Sons
- Year
- 2005
- Tongue
- English
- Weight
- 264 KB
- Volume
- 206
- Category
- Article
- ISSN
- 1022-1352
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
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.
magnified image