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Tetracarbonyleisenkomplexe von trans-Cycloalkenen und trans-Cycloalkadienen. Vorläufige Mitteilung

✍ Scribed by Martin von Büren; Hans-Jürgen Hansen

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

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✦ Synopsis

Tetracarbonyliron Complexes of trans‐Cycloalkenes and trans‐Cycloalkadienes

Relatively stable olefin tetracarbonyliron complexes were obtained by reaction of Fe~2~(CO)~9~ with trans‐cyclooctene (t‐1), trans‐cyclononene (t‐2) and trans‐cyclodecene (t‐3) (Scheme 2) in pentane solution at room temperature. Furthermore, trans,cis‐cycloocta‐1,5‐ and ‐1,3‐diene (t,c‐7 and t,c‐8) as well as trans,trans,cis‐2,8,12‐trans‐bicyclo[8.4.0]tetradecatriene (t,t,c‐9) gave stable complexes only with the trans‐configurated double bond (Scheme 3).

An olefin tetracarbonyliron complex was also obtained with bicyclo[4.3.1]deca‐7,9‐diene (10) which reacted only at the strained bridge‐head double bond. The IR. spectra of the new complexes are in agreement with an equatorial position of the olefinic ligands in the trigonal bipyramide of the iron.

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