Syntheses, Structures, and Coordination of Diborylbipyridines and Bipyridinediborates

✍ Scribed by Norbert Weis; Hans Pritzkow; Walter Siebert

• Publisher: John Wiley and Sons
• Year: 1999
• Tongue: English
• Weight: 258 KB
• Volume: 1999
• Category: Article
• ISSN: 1434-1948
• DOI: 10.1002/(sici)1099-0682(199903)1999:3<393::aid-ejic393>3.0.co;2-5

✦ Synopsis

Dedicated to Prof. Dr. Günter Wächtershäuser on the occasion of his 60th birthday 6,6Ј-Bis(diethylboryl)-2,2Ј-bipyridine (1a) was obtained in functional donor-acceptor compounds have been used for the formation of the copper complex 4 and of the adduct 5 low yield by in situ deprotonation of 2,2Ј-bipyridine in the presence of diethyl(methoxy)borane. 6,6Ј-Dilithio-2,2Ј-bipy-which is built from diborylbipyridine and a dihydroxydiboroxan derivative. The composition of the products follows from ridine reacts with various alkoxyboranes leading to bipyridinediborates 2 in good yields. The derivatives 2b and 2c allow spectroscopic data and from X-ray structure analyses for 2f, 4, and 5. the formation of the free diborylbipyridines 1b and 1c. The coordination properties of the diboryl-bipyridines as tetrain 6,6Ј-diborylated bipyridines with respect to their donor- [a] Anorganisch-Chemisches Institut der Universität, yet unknown assembly, most likely 1a and 3a form donorϪ