The crystal and molecular structure of [24] metacyclophane I*
Abstract
Two modifications were found in [24] metacyclophane by an x-ray diffraction method. The crystal structure of one of these modifications, [24] metacyclophane I, was determined from three-dimensional x-ray diffraction data. The space group is P21/c and the cell dimensions are a = 10.180, b = 23.375, c = 5.074 Å and β = 105° 31′. The unit cell contains two molecules and the molecule has a centre of symmetry. The intensity data were collected by an automated diffractometer and the initial structure was solved by a symbolic addition method. The final disagreement factor for all 2224 reflections was 10.1%. In the molecule the cyclophane units are connected by gauche and anti conformation alternatively and are in contact with the other units by van der Waals' distances. The two CH2 group at one linkage pair in the asymmetric unit vibrate anisotropically along the c* axis much more than those of the other chemically equivalent pair. The molecules are in contact with normal van der Waals' distances.
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Articles in the same Issue
- Struktur und absolute Konfiguration des Methylsulfonats von Penbutolol
- Röntgeneinkristallstrukturanalyse eines Chlorderivates von Permanentrot FRLL. Vergleich mit dem entsprechenden Derivat von Permanentbraun FG
- Linearer elektrooptischer Tensor des monoklinen Lithiumsulfat-Monohydrats
- The molecular and crystal structure of kavaic acid*
- The crystal structure of aramayoite Ag(Sb,Bi)S2*
- The crystal and molecular structure of [24] metacyclophane I*
- The crystal structure of freieslebenite, PbAgSbS3*
- Structure cristalline du monophosphate KTiPO5
- Oriented transformation of chalcophanite during thermal treatment
- Refinement of the crystal structure of gibbsite, Al(OH)3
- Distribution of stacking faults in relation to the growth of cadmium iodide polytypes
- Crystal structures of three CdI2 polytypes
- Deformation-induced thermoluminescence in NaCl:Sr
- Crystal data for (2-methallyl)triplienylstannane, bromodimethyl-2,4-pentanedionatoplatinum(IV), s-alanatopentaamminecobalt(III) perchlorate monohydrate and (1R, 3R or S, 4R, 6S)-1,3,6,8-tetrabromo-p-methane-2-one
- The structure of high-pressure tellurium
