The metalation of several free base porphyrins by the bismuth salts Bi(NO~3~)~3~ and Bi(SO~3~CF~3~)~3~ in DMF or pyridine is described. The resulting stable Bi(III) porphyrin complexes are characterized by electrochemistry, ^1^H NMR and UV-vis spectroscopy. The structure of ( OEP ) Bi ( SO ~3~ CF ~3
Synthesis and X-Ray Crystal Structure of Bis-3,3′-(nitro- NNO-azoxy)-difurazanyl Ether
✍ Scribed by Aleksei B. Sheremetev; Sergei E. Semenov; Vladimir S. Kuzmin; Yurii A. Strelenko; Sema L. Ioffe
- Publisher
- John Wiley and Sons
- Year
- 1998
- Tongue
- English
- Weight
- 112 KB
- Volume
- 4
- Category
- Article
- ISSN
- 0947-6539
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✦ Synopsis
Two approaches to the synthesis of bis-3,3'-(nitro-NNO-azoxy)difurazanyl ether 2 have been tested, that is, varying the sequence of the introduction of the nitro-NNO-azoxy group and ether bridge. Difurazanyl ether formation through basepromoted transformation of nitrofurazans has been studied in which the nitro groups were activated by ortho electron-withdrawing substituents such as nitro-NNO-azoxy and tert-butyl-NNO-azoxy groups. The nitro-NNO-azoxy group was formed by destructive N-nitration of the tert-butyl-NNO-azoxy group. The X-ray crystal structure of 2 is reported.
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