Centuries: 12th century - 13th century - 14th century
Decades: 1240s 1250s 1260s 1270s 1280s - 1290s - 1300s 1310s 1320s 1330s 1340s
Years: 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299
... a hydrogen atom on nitrogen from ammonia or an amine is replaced by a metal cation are also known as amides, or azanides.
IUPAC Compendium of ...
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