Isocyanid- und Heteroallen-verbrückte Metallkomplexe, IX. Di- und Trieisenkomplexe mit funktionellen Isocyanidbrücken

✍ Scribed by Christian, Götz ;Lentz, Dieter ;Hartl, Hans ;Fehlhammer, Wolf Peter

• Publisher: Wiley (John Wiley & Sons)
• Year: 1992
• Tongue: English
• Weight: 819 KB
• Volume: 125
• Category: Article
• ISSN: 0009-2940
• DOI: 10.1002/cber.19921250518

✦ Synopsis

Isocyanide‐ and Heteroallene‐Bridged Metal Complexes, IX^[1,2]^. – Di‐ and Triiron Complexes with Functional Bridging Isocyanides

The reactions of ten mainly functional isocyanide dichlorides RN = CCl~2~ with Na[FeCp(CO)~2~] in tetrahydrofuran give mono‐isocyanide derivatives [Fe~2~(Cp)~2~(CO)~3~CNR] (1 a–g) of [Fe‐Cp(CO)~2~]~2~ in which the isocyanide occupies a bridging position. In three cases also minor amounts of diisocyanide complexes [FeCp(μ‐CNR)CO]~2~ (2c, 2e, 8) have been isolated. The chlorocarbonyl‐substituted aryl isocyanide dichlorides and pentafluorophenyl isocyanide dichloride in addition suffer (CO)Cl/ and F/ metal exchange, respectively, with formation of μ~3~‐isocyanide‐bridged triiron complexes (4 a–c, 7) via the intermediates 5 and 6, 7 has been studied by X‐ray analysis.