Diaminobenzene can refer to three different isomers, which are also termed phenylenediamines:
1,2-diaminobenzene 1,3-diaminobenzene 1,4-diaminobenzene
Wikipedia
Diaminobenzene can refer to three different isomers, which are also termed phenylenediamines:
1,2-diaminobenzene 1,3-diaminobenzene 1,4-diaminobenzene