Biphenyl-4,4'-diyl bis(2,2,5,5-tetramethyl-1-oxyl-3-pyrroline-3-carboxylate)
In the title compound, C30H34N2O6, the complete molecule is generated by a crystallographic 2/m symmetry operation. The 1-oxyl-3-pyrroline-3-carboxylate group lies on a mirror plane. The dihedral angle between the ring planes of the biphenyl fragment is constrained by symmetry to be zero, resulting in rather short intramolecular H...H contact distances of 2.02 Å. In the crystal, molecules are connected along the a-axis direction by very weak intermolecular methyl-phenyl C-H...[pi] interactions. The C-H bond is not directed to the center of the benzene ring, but mainly to one C atom [C-H...C(x - 1, y, z): H...C = 2.91 Å and C-H...C = 143°]. Key indicators: single-crystal X-ray study; T = 169 K; mean σC–C) = 0.002 Å ; R factor = 0.049; wR factor = 0.126; data-to-parameter ratio = 19.8.
| Author: | Dominik Margraf, Denise Schuetz, Thomas F. Prisner, Jan W. Bats |
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| URN: | urn:nbn:de:hebis:30-68977 |
| Document Type: | Article |
| Language: | English |
| Date of Publication (online): | 04.09.2009 |
| Year of first Publication: | 2009 |
| Publishing Institution: | Univ.-Bibliothek Frankfurt am Main |
| Source: | Acta Crystallographica Section E, Structure Reports Online, 2009. E65, o1784 doi:10.1107/S1600536809024659 |
| HeBIS PPN: | 217331130 |
| Institutes: | Biochemie und Chemie |
| Dewey Decimal Classification: | 540 Chemie und zugeordnete Wissenschaften |
| Sammlungen: | Universitätspublikationen |
| Note: | 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. |
| Licence (German): |  Creative Commons - Namensnennung 2.0 |
