dinitrogenn.
/dʌɪˈnʌɪtrədʒ(ə)n/, U.S. /ˌdaɪˈnaɪtrədʒ(ə)n/ Chemistry.
1. attributive. Used to designate compounds, groups, etc., containing two nitrogen atoms.Earliest in compounds.
ΚΠ
1914 Jrnl. Amer. Chem. Soc. 36 82 The recommendations of the Austrian and Russian National Committees for indicating the relative numbers of atoms in the molecule are approved; e.g., N2O5 becomes dinitrogen pentoxide.
1922 T. M. Lowry Inorg. Chem. xxvi. 401 Nitric oxide (or nitrogen monoxide)... This [latter] name is sometimes applied loosely to dinitrogen monoxide, N2O, and is therefore too ambiguous to be used safely.
1978 Chem. Rev. 78 593/2 There are two terminal and one bridging dinitrogen ligands present in the molecule.
1992 Jrnl. Amer. Chem. Soc. 114 8067/1 Recently, another bridged dinitrogen complex..has been shown to produce some ammonia..upon protonation.
2003 Jrnl. Org. Chem. 68 6049 Episulfidation of alkenes by dinitrogen sulfide.
2. Molecular (gaseous) nitrogen, N2.
ΚΠ
1970 Nature 25 July 378/1 The nitrogen-fixing enzyme complex, nitrogenase, catalyses various reductions as well as the formation of ammonia from dinitrogen.
1975 Nature 31 July 407/2 Rhizobia can infect legume roots and fix dinitrogen in the root nodules.
1997 Organometallics 16 4236/2 The solubilities of argon and dinitrogen in toluene.
Compounds
dinitrogen monoxide n. = nitrous oxide n. at nitrous adj. and n. Compounds.
ΚΠ
1922 T. M. Lowry Inorg. Chem. xxvi. 401 Nitric oxide (or nitrogen monoxide)... This [latter] name is sometimes applied loosely to dinitrogen monoxide, N2O, and is therefore too ambiguous to be used safely.
1996 B. W. Clark & J. K. Wallace Canada (ed. 3) vi. 77 Most of these gases are produced as by-products of our everyday activities... Dinitrogen monoxide from production of chemical fertilizers, burning wood and fossil fuels.
dinitrogen pentoxide n. = nitrogen pentoxide n. at nitrogen n. Compounds 2.
ΚΠ
1914 Jrnl. Amer. Chem. Soc. 36 82 The recommendations of the Austrian and Russian National Committees for indicating the relative numbers of atoms in the molecule are approved; e.g., N2O5 becomes dinitrogen pentoxide.
1991 Process Engin. Aug. 21/1 ICI has developed a process for the electrolytic production of dinitrogen pentoxide—a powerful nitrating agent.
dinitrogen tetroxide n. = nitrogen tetroxide n. at nitrogen n. Compounds 2.
ΚΠ
1922 T. M. Lowry Inorg. Chem. xxvi. 401 Nitrogen dioxide, NO2, and dinitrogen tetroxide, N2O4, are very readily convertible into one another.
1991 Process Engin. Aug. 21/2 At the anode, dinitrogen tetroxide is oxidised to dinitrogen pentoxide: N2O4 + 2NO3 → 2NO2O5 + 2e.
dinitrogen trioxide n. = nitrogen trioxide n. (a) at nitrogen n. Compounds 2.
ΚΠ
1922 T. M. Lowry Inorg. Chem. xxvi. 401 The seven oxides of nitrogen may be grouped into two series... N2O3 Dinitrogen trioxide or nitrous anhydride. N2O2 is not known. N2O Dinitrogen monoxide or nitrous oxide.
1999 Chem. Res. & Toxicol. 12 83/2 Reaction of ·NO2 with another ·NO produces dinitrogen trioxide (N2O3), a potent nitrosating agent.
This is a new entry (OED Third Edition, December 2005; most recently modified version published online March 2022).
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n.1914