residual dipolar coupling

initialism: RDC
https://doi.org/10.1351/goldbook.08407
Dipolar coupling, but of a reduced magnitude to that seen in solids, observed in a liquid sample between spins in a molecule where there is incomplete averaging of spatially anisotropic dipolar couplings.
Notes:
  1. RDC is typically achieved through partial alignment of molecules in the liquid state through spatially aligned gels or liquids.
  2. RDC is used to provide 3D structural information on molecules.
Source:
PAC, 2021, 93, 647. (Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)) on page 703 [Terms] [Paper]