Compounds Containing a or Group

Rule C-953. Amidrazones

953.1 - Compounds RC(NH2)=N-NH2 or RC(=NH)-NH-NH2 are termed generically "amidrazones" or, if the name of the corresponding acid ends in "-carboxylic acid", are termed "carboxamidrazones".

953.2 - Names of individual compounds RC(NH2)=N-NH2 or RC(=NH)-NH-NH2 are derived from the systematic names of the corresponding acids by replacing "-oic acid" by "-amide hydrazone" or "-ohydrazide imide", respectively, by replacing "-carboxylic acid" by "-carboxamide hydrazone" or "-carbohydrazide imide", respectively, or by replacing "-ic acid" by "-amide hydrazone" or "-ohydrazide imide", respectively. If the position of the double bond is unknown the compounds are named similarly but with the ending "-amidrazone".

Examples to Rule C-953.2

Benzamide hydrazone

Benzohydrazide imide

Benzamidrazone: the name for a compound which may have one or other of the above two structures.

953.3 - For N-substituted amidrazones, where the position of the double bond is known, the substituents receive locants laid down in preceding rules for amides, imides, hydrazides, and hydrazones. When the position of the double bond is unknown, primes are assigned in accordance with the system N''-CR-N'-N.

Examples to Rule C-953.3

N-Phenylbenzamidrazone is the name used when it is uncertain whether a compound has the structure or one of its double-bond isomers.

See Recommendations'93 Table 31(a)

Compounds Containing a N=C-N or N=C=N Group C-954, C-955, C-956
Compounds Containing a N-C(-N)=N Group C-961, C-962
Compounds Containing a N-CO-N or Related Group C-971, C-972, C-973, C-974, C-975
Compounds Containing a N-CO-N-N or More Complex Group C-981, C-982, C-983, C-984, C-985


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