| | 1 | Author
| Ludwig Roß, Martin Dräger | Requires cookie* | | | Title
| Phases of Decaphenylcyclopentagermane (Ph2Ge)s [1]  | | | | Abstract
| (Pb^Ges) can be obtained from solutions in five crystalline phases, two pure and three including solvent of crystallization. This is lost at 70 °C. At 190 °C all phases transform into a plastic crystalline phase. For this tetragonal phase a gear wheel model for librations of the molecules is developed. The crystal structure of triclinic (Ph2Ge)s has been determined and refined to R = 0.050. The molecule has a flexible conformation in accordance with a better solubility than exhibited by the homologous rings (Ph2Ge)4 and (Ph2Ge)6 containing rigid normal conformations. The arrangement of phenyl groups is either parallel or perpendicular for both cases intra-and intermolecular. The compound (Ph2Ge)6 attains a plastic crystalline state at 346 °C. | | | |
Reference
| Z. Naturforsch. 38b, 665—673 (1983); eingegangen am 28. Januar 1983 | | | |
Published
| 1983 | | | |
Keywords
| Germanium, Homocycle, Conformation, Plastic Crystalline State | | | |
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| default:Reihe_B/38/ZNB-1983-38b-0665.pdf | | | | Identifier
| ZNB-1983-38b-0665 | | | | Volume
| 38 | |
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