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Photooxidation of the Ligands of Bis(o-semiquinonediimine)nickel(II) and -platinum(II)

✍ Scribed by Prof. Dr. Arnd Vogler; Dr. Horst Kunkely

Publisher: John Wiley and Sons
Year: 1980
Tongue: English
Weight: 217 KB
Volume: 19
Category: Article
ISSN: 0044-8249
DOI: 10.1002/anie.198002211

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✦ Synopsis

We have now been able to show that a nucleophilic addition takes place on reaction of triphenylstannyllithium with carbon disulfide. The initial product (1) can be trapped by alkylation with methyl or ethyl iodide in tetrahydrofuran (THE').

20 "c

After separation by column chromatography, the products (2a) and (2b) can be crystallized from petroleum ether as airstable violet needles of m. p, 128-129 "C and 4 7 4 8 "C, respectively, with the given composition.

With aryl halides such as iodobenzene or p-bromotoluene, however, no substitution products could be detected, but only bis(tripheny1tin) sulfide in small amounts. Attempted nucleophilic addition of trimethylstannyllithium also failed; apparently stabilization of the electron-rich initial product by mesomerizable groups attached to tin is essential.

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