Structural Parameters from19F Homonuclear Dipolar Couplings, Obtained by Multipulse Solid-State NMR on Static and Oriented Systems

Orientation-Dependent 19F Dipolar Coupli

Orientation-Dependent 19F Dipolar Couplings within a Trifluoromethyl Group Are Revealed by Static Multipulse NMR in the Solid State

✍ Stephan L Grage; Anne S Ulrich 📂 Article 📅 2000 🏛 Elsevier Science 🌐 English ⚖ 102 KB

The homonuclear dipolar coupling between the three equivalent 19 F-spins of a trifluoromethyl group, rotating about its threefold symmetry axis, was studied by multipulse solid-state NMR. A modified CPMG sequence was used first to resolve the dipolar splitting of a powder sample, and then to follow