We have obtained narrow-band images of the Orion Molecular Cloud OMC–1 in various infrared transitions of molecular hydrogen. The molecular emission from levels with low excitation energies (<∼ 15 000K) is made up of numerous linear, jet–like structures. Their collimation factor is typically about 10 and there is no appreciable outward broadening. Most of these structures are arranged radially ...

# 2006 International Union of Crystallography All rights reserved In the crystal structure of the title compound, C16H18N2O2, the indole moiety is nearly planar. The two carbonyl groups are almost perpendicular, with a torsion angle of 105.7 (4) , and the single C—C bond linking the two carbonyl groups is 1.515 (5) Å in length. The molecules are linked together by N—H O intermolecular hydrogen ...