correlation spectroscopy through long-range coupling

acronym: COLOC
https://doi.org/10.1351/goldbook.08324
Heteronuclear (typically \(\ce{^{13}C}\)) detected long range 2D correlation experiment in nuclear magnetic resonance spectroscopy that has mostly been superseded by heteronuclear multiple bond correlation (HMBC) experiments and its variants.
Note:
COLOC is often used to show spin-spin coupling between hydrogen and carbon nuclei 2 and 3 bonds apart.
Source:
PAC, 2021, 93, 647. (Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)) on page 684 [Terms] [Paper]