Synthesis and characterization of variously asymmetrically chloro-substituted disilanes and trisilanes – A new perspective on known compounds
| Autor: | Katrin Deller, Bernhard Rieger |
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| Rok vydání: | 2015 |
| Předmět: |
Reaction conditions
Trisilane Organic Chemistry Infrared spectroscopy chemistry.chemical_element Biochemistry Medicinal chemistry Inorganic Chemistry chemistry.chemical_compound chemistry Acetyl chloride Materials Chemistry Anhydrous Organic chemistry Lithium Physical and Theoretical Chemistry Cyclic voltammetry Thermal analysis |
| Zdroj: | Journal of Organometallic Chemistry. 794:188-196 |
| ISSN: | 0022-328X |
| DOI: | 10.1016/j.jorganchem.2015.06.035 |
| Popis: | Asymmetrically phenyl-substituted disilanes of the general formula RMe 2 Si–SiMePh 2 ( MPD02 : R = Me, MPD12 : R = Ph) and the trisilane (PhMe 2 Si) 2 SiMePh ( MPT111 ) were prepared from the corresponding monosilanes using lithium as coupling reagent. These compounds were utilized as precursors for the preparation of the chlorosilanes Cl 2 MeSi–SiMe 2 R ( CMD20 : R = Me; CMD21 : R = Cl) and (ClMe 2 Si) 2 SiMeCl ( CMT111 ). The phenyl groups were selectively removed using acetyl chloride and anhydrous AlCl 3 . Subjecting these phenyl-substituted methyloligosilanes to the redesigned literature-known reaction conditions, the strengths of the synthetic routes shown so far were combined. In addition, not only methyl-substituents are applicable, since we used Ph 2 ( t Bu)Si–SiMe 2 Ph ( t BuMPD21 ) as precursor for the preparation of Cl 2 ( t Bu)Si–SiMe 2 Cl ( t BuCMD21 ). The characterization of the phenyl- and chloro-substituted di- and trisilanes mentioned above is not completely reported in literature. They were fully analyzed by means of NMR and IR spectroscopy, GC–MS, DSC and elemental analysis at our chair. DSC studies of the synthesized chlorosilanes led to the assumption of a plastic crystalline behavior for certain compounds. Beyond that, CV measurements of the chloro-substituted compounds pointed out that their reduction occurs at highly negative potentials. |
| Databáze: | OpenAIRE |
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