Sandwich- und Tripeldecker-Komplexe des 1,4-Diboracyclohexadiens ausgehend von 1,4-Dibora-2-cyclohexen-Derivaten1)

✍ Scribed by Wörner, Karl-Fred ;Uhm, Jae-Kook ;Pritzkow, Hans ;Siebert, Walter

• Publisher: Wiley (John Wiley & Sons)
• Year: 1990
• Tongue: English
• Weight: 412 KB
• Volume: 123
• Category: Article
• ISSN: 0009-2940
• DOI: 10.1002/cber.19901230605

✦ Synopsis

Sandwich und Triple‐Decker Complexes of 1,4‐Diboracyclohexadienes Starting with 1,4‐Dibora‐2‐cyclohexene Derivatives

Reactions of 1,4‐dibora‐2‐cyclohexene derivatives 1 with transition‐metal complex fragments yield the complexes of 1,4‐dibora‐2,5‐cyclohexadienes 2 by dehydrogenation. The tetra‐ and tricarbonyl complexes 4a, 5a, b are formed in the reaction of la, b with (CH~3~CN)~3~Cr(CO)~3~ and Fe~2~(CO)~9~, respectively: with bis(toluene)iron the sandwich 6b is obtained. The triple‐ decker complexes 7a and 8a, b are formed from 1 a, b and the dimeric carbonyl (cyclopentadienyl) complexes of nickel and iron, respectively. The bis(methallylnickel) triple‐decker 9a is obtained as a mixture of cis/trans isomers, la and [(C~2~H~4~)~2~‐RhCl]~2~ yield the tris(1,4‐diboracyclohexadiene)dirhodium triple‐decker sandwich 10a by elimination of the ethene ligands and the chlorine bridge.