diazo group

American  

noun

Chemistry.

1. the bivalent group –N=N– united with one hydrocarbon group and another atom or group, as in benzenediazo hydroxide, C 6 H 5 N=NOH, or the bivalent group =N=N united with one hydrocarbon group, as in diazomethane, CH 2 =N=N.

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Example Sentences

Somewhat later, they found that it could be prepared from diazobenzene imide, provided a nitro group were present in the ortho or para position to the diazo group.

From Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 1 "Austria, Lower" to "Bacon" by Various

When the para-position is occupied, the diazo group takes the ortho-position.

From Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 4 "Diameter" to "Dinarchus" by Various