Some halogenation reactions of nido-7,8,9,11-P2C2B7H9.

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388980%3A_____%2F02%3A50023002" target="_blank" >RIV/61388980:_____/02:50023002 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Some halogenation reactions of nido-7,8,9,11-P2C2B7H9.
Original language description
Halogenations of the diphosphadicarbaborane nido-7,8,9,11-P2C2B7H9 using the AlCl3/CCl4, and I-2/AlCl3/C6H6 halogenation systems resulted in the formation of a mixture of mono- and disubstituted derivatives 10-X-nido-7,8,9,11-P2C2B7H8 (for X = Cl and I,yields 6 and 21%, respectively) and 5,10-X-2-nido-7,8,9,11-P2C2B7H7 (for X = Cl and I, yields 57 and 46%, respectively). These results show that the halogenation under electrophilic conditions takes place at positions most distant from the P atoms, but at sites adjacent to the CH units. In contrast, the bromination with N-bromosuccinimide in CH2Cl2 is probably of radical character, proceeding in positions adjacent to the P centres to give 3-Br-nido-7,8,9,11-P2C2B7H8 (yield 41%) and 2,3-Br-2-nido-7,8,9,11-P2C2B7H7 (yield 5%). The mixtures of the halo derivatives were separated by column chromatography on silica gel. Individual compounds were characterized by mass spectrometry and multinuclear (B-11, H-1, and P-31) spectroscopy combined w
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CA - Inorganic chemistry
OECD FORD branch
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Project
<a href="/en/project/LN00A028" target="_blank" >LN00A028: New inorganic compounds and advanced materials</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2002
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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