H2S=NH, sulfimide, and its hydrocarbyl derivatives. They are thus related to sulfoxides in the same way that imines are related to aldehydes or ketones, e.g. (C2H5)2S=NPhS,S-diethyl-N-phenylsulfimide.
A term used in Chemical Abstracts Service Index Nomenclature for sulfonylamines, RN=S(=O)2.
Source: PAC, 1995, 67, 1307. 'Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)' on page 1368 (https://doi.org/10.1351/pac199567081307)