TY - JOUR A1 - Frolow, Olga A1 - Bats, Jan W. A1 - Engels, Joachim W. T1 - 3-Ethynyl-2,2,5,5-tetramethyl-1-oxyl-3-pyrroline T2 - Acta crystallographica / Section E, Structure reports online N2 - 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). Key indicators: single-crystal X-ray study; T = 167 K; mean σ(C–C) = 0.002 Å; R factor = 0.062; wR factor = 0.157; data-to-parameter ratio = 27.3. Y1 - 2009 UR - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/6937 UR - https://nbn-resolving.org/urn:nbn:de:hebis:30-69503 SN - 1600-5368 N1 - This is an open-access article distributed under the terms of the Creative Commons Attribution Licence http://creativecommons.org/licenses/by/2.0/uk/legalcode, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited. VL - 65 IS - o1848 PB - Munksgaard CY - Copenhagen ER -