Research Article: 3-Ethynyl-2,2,5,5-tetra­methyl-1-oxyl-3-pyrroline

Date Published: August 01, 2009

Publisher: International Union of Crystallography

Author(s): Olga Frolow, Jan W. Bats, Joachim W. Engels.


The five-membered ring of the title compound, C10H14NO, is almost planar [mean deviation from best plane = 0.006 (1) Å]. The N—O bond is in the plane of the five-membered ring. The mol­ecule is positioned about a pseudo-mirror plane at y = 0.375. In the crystal, mol­ecules are connected by inter­molecular C—H⋯O contacts into layers parallel to (010).

Partial Text

For the preparation of the title compound, see: Schiemann et al. (2007 ▶). For its application as a spin label, see: Schiemann et al. (2007 ▶); Piton et al. (2007 ▶). For the crystal structure of a related compound, see: Fritscher et al. (2002 ▶).




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