Title: heteronuclear single quantum correlation with additional TOCSY transfer Long Title: IUPAC Gold Book - heteronuclear single quantum correlation with additional TOCSY transfer DOI: 10.1351/goldbook.08359 Status: current Definition Variant of the heteronuclear single quantum correlation (HSQC) experiment that shows correlations from a heteronucleus (e.g., \(\ce{^{13}C}\)) to not only its directly bound \(\ce{^{1}H}\) but also to all other \(\ce{^{1}H}\) nuclei within the spin system. Related Terms - heteronuclear single quantum correlation: https://goldbook.iupac.org//terms/view/08358 - spin system: https://goldbook.iupac.org//terms/view/08421 - total correlation spectroscopy: https://goldbook.iupac.org//terms/view/08435 Source - PAC, 2021, 93, 647. 'Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)' on page 691 (https://doi.org/10.1515/pac-2019-0203) Other Outputs - html: https://goldbook.iupac.org/terms/view/08359/html - json: https://goldbook.iupac.org/terms/view/08359/json - xml: https://goldbook.iupac.org/terms/view/08359/xml Citation: Citation: 'heteronuclear single quantum correlation with additional TOCSY transfer' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.08359 License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) for individual terms. Collection: If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org . Disclaimer: The International Union of Pure and Applied Chemistry (IUPAC) is continuously reviewing and, where needed, updating terms in the Compendium of Chemical Terminology (the IUPAC Gold Book). Users of these terms are encouraged to include the version of a term with its use and to check regularly for updates to term definitions that you are using. Accessed: 2026-06-11T05:41:29+00:00