| Autor: | Yuxia Liu, Robert West, David Ballweg, Ilia A. Guzei |
|---|---|
| Rok vydání: | 2002 |
| Předmět: |
chemistry.chemical_classification
Spiro compound Silicon chemistry.chemical_element General Chemistry Crystal structure Cleavage (embryo) Photochemistry Dimethoxyethane Crystallography chemistry.chemical_compound Trigonal bipyramidal molecular geometry chemistry Square pyramid General Materials Science Lithium |
| Zdroj: | Silicon Chemistry. 1:55-58 |
| ISSN: | 1569-0660 |
| Popis: | The reaction of spirobisilafluorene (1) with lithium in dimethoxyethane produces lithium 1-methyl-spirobisilafluorenide (2), a stable pentacoordinate silicon compound with five carbon ligands, and lithium 2-methoxyethoxide, which was identified by trapping with Ph3SiCl to give Ph3Si-OCH2CH2OCH3 (4). The X-ray crystal structure of 2 shows that the geometry at silicon is an idealized trigonal bipyramid, slightly distorted toward a square pyramid. Methanolysis of 2 cleaves a Si-aryl bond producing a methyl biphenylsilafluorene, 3. Crystal structures are reported for 3 and 4. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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