Methylene imine

Methylene imine
Names
	Preferred IUPAC name Methanimine
	Other names Formaldimine, azomethine, formaldehyde imine
Identifiers
CAS Number	2053-29-4;
3D model (JSmol)	Interactive image;
Beilstein Reference	1900196
ChEBI	CHEBI:38220;
ChemSpider	109754;
Gmelin Reference	163896
PubChem CID	123139;
CompTox Dashboard (EPA)	DTXSID10174524 ;
	InChI InChI=1S/CH3N/c1-2/h2H,1H2 Key: WDWDWGRYHDPSDS-UHFFFAOYSA-N;
	SMILES C=N;
Properties
Chemical formula	CNH3
Molar mass	29.042 g·mol−1
Appearance	colorless gas
Related compounds
Related compounds	N-Methylmethanimine; Ethanimine
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Methylene imine is an organic compound with the formula H₂C=NH. The simplest imine, it is a stable, colorless gas that has been detected throughout the universe.^[1] Structural parameters determined by microwave spectroscopy include a C=N bond length of 1.27 Å, an N–H bond length of 1.02 Å and an HNC bond angle of 110.5°.^[2] Because unhindered imines polymerize or oligomerize when concentrated, methylene imine has not been isolated as a liquid or bulk solid. Attempted synthesis of methylene imine from the reaction of ammonia and formaldehyde produces hexamethylenetetramine.^[3]

References

^ Vuitton, V.; Yelle, R. V.; Anicich, V. G. (2006). "The nitrogen chemistry of Titan's upper atmosphere revealed". Astrophysical Journal. 647: L175 – L178. doi:10.1086/507467.
^ Richard Pearson Jr., Frank J. Lovas (1977). "Microwave spectrum and molecular structure of methylenimine (CH₂NH)". J. Chem. Phys. 66: 4149. doi:10.1063/1.434490.
^ Eller, K.; Henkes, E.; Rossbacher, R.; Höke, H. (2000). "Amines, Aliphatic". Ullmann's Encyclopedia of Industrial Chemistry. Wiley-VCH Verlag GmbH. doi:10.1002/14356007.a02_001. ISBN 9783527306732.

[1] Vuitton, V.; Yelle, R. V.; Anicich, V. G. (2006). "The nitrogen chemistry of Titan's upper atmosphere revealed". Astrophysical Journal. 647: L175 – L178. doi:10.1086/507467.

[2] Richard Pearson Jr., Frank J. Lovas (1977). "Microwave spectrum and molecular structure of methylenimine (CH₂NH)". J. Chem. Phys. 66: 4149. doi:10.1063/1.434490.

[Ullmann-3] Eller, K.; Henkes, E.; Rossbacher, R.; Höke, H. (2000). "Amines, Aliphatic". Ullmann's Encyclopedia of Industrial Chemistry. Wiley-VCH Verlag GmbH. doi:10.1002/14356007.a02_001. ISBN 9783527306732.

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