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Unexpected Splitting of ansa-Ytterboacene and ansa-Calcoacene: Formation of [(η2-C12H8)ZrCl2(thf)3] and (Me3Si)2C12H8

✍ Scribed by Igor L. Fedushkin; Tatyana V. Petrovskaya; Mikhail N. Bochkarev; Sebastian Dechert; Herbert Schumann

Publisher
John Wiley and Sons
Year
2001
Tongue
English
Weight
107 KB
Volume
40
Category
Article
ISSN
0044-8249

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✦ Synopsis

Recently we reported on the synthesis of the C 2 -symmetric trans-rac-ansa-lanthanoacenes [1] [(h 5 -C 12 H 8 ) 2 M(thf) 2 ] (M Yb, 1; Sm, 2) by reductive coupling of acenaphthylene (acene) with activated metallic ytterbium or samarium. [2] The acenyl radical anions formed in the course of these redox reactions dimerize to biacenyl dianions which stereoselectively coordinate the simultaneously formed M 2 cations. In contrast, the

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