A term abandoned because of its ambiguous use to mean either
RS(=O)=NH2 (sulfonimidamide) or
RS(=NH)2=NH2 (sulfonodiimidamide).
Source:
PAC, 1995, 67, 1307
(Glossary of class names of organic compounds and reactivity intermediates based on
structure (IUPAC Recommendations 1995))
on page 1369