Dichloro(2,2′,4,4′,6,6′-hexamethyl-m-terphenyl)bis(N-methylimidazole)(tetrahydrofuran)samarium(III) toluene disolvate
✍ Scribed by Rabe, Gerd W. ;Rhatigan, Brian ;Golen, James A. ;Rheingold, Arnold L.
- Publisher
- International Union of Crystallography
- Year
- 2003
- Tongue
- English
- Weight
- 364 KB
- Volume
- 59
- Category
- Article
- ISSN
- 1600-5368
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Single-crystal X-ray study T = 296 K Mean '(C±C) = 0.014 A Ê R factor = 0.071 wR factor = 0.156 Data-to-parameter ratio = 16.3 For details of how these key indicators were automatically derived from the article, see http://journals.iucr.org/e.
The crystal and molecular structure of the title compound, C 19 H 20 Cl 2 O 2 , reveals a chair conformation for the pyran ring in which the hydroxyl group is axially oriented. All the other substituents occupy equatorial positions. There are two molecules in the asymmetric unit.
Single-crystal X-ray study T = 293 K Mean '(C±C) = 0.004 A Ê R factor = 0.051 wR factor = 0.140 Data-to-parameter ratio = 15.2 For details of how these key indicators were automatically derived from the article, see http://journals.iucr.org/e.
Á2CHCl 3 , a diketopyrrolopyrrole analogue (red pigment), has C i symmetry and the phenyl rings are at an angle of 53.5 (1) to the planar heterocylic ring system.