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13C- and 1H-NMR. Studies on the Configuration of Tricarbonyliron Complexes of Oxa- and Aza[4.4.3]propellanes

✍ Scribed by Kurt Bachmann; Wolfgang Von Philipsborn; Chaim Amith; David Ginsburg

Publisher
John Wiley and Sons
Year
1977
Tongue
German
Weight
530 KB
Volume
60
Category
Article
ISSN
0018-019X

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✦ Synopsis

Abstract

The configurations of a series of mono‐ and bis‐Fe(CO)~3~ complexes of 12‐oxa[4.4.3]‐propella‐2,4,7,9‐tetraene (1) and of 11,13‐dioxo‐12‐methyl‐12‐aza[4.4.3]propella‐2,4,7,9‐tetraene (7) as well as of a trienic aza‐propellane complex have been studied in solution by ~13~C‐ and ~1~H‐NMR. spectroscopy. Praseodymium‐induced ~13~C‐shifts of the metalcarbonyl carbon atoms and of the central carbon atom of the complexed diene systems are particularly sensitive and useful to prove exo‐ or endo‐configuration of the tricarbonyliron ligand. In addition, H,H‐ and C,H‐coupling constants of the complexes and parent compounds are reported and discussed.

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