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Syntheses, Structures, and Coordination of Diborylbipyridines and Bipyridinediborates
Author(s) -
Weis Norbert,
Pritzkow Hans,
Siebert Walter
Publication year - 1999
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/(sici)1099-0682(199903)1999:3<393::aid-ejic393>3.0.co;2-5
Subject(s) - chemistry , coordination complex , nanotechnology , organic chemistry , metal , materials science
6,6′‐Bis(diethylboryl)‐2,2′‐bipyridine ( 1a ) was obtained in low yield by in situ deprotonation of 2,2′‐bipyridine in the presence of diethyl(methoxy)borane. 6,6′‐Dilithio‐2,2′‐bipyridine reacts with various alkoxyboranes leading to bipyridinediborates 2 in good yields. The derivatives 2b and 2c allow the formation of the free diborylbipyridines 1b and 1c . The coordination properties of the diboryl–bipyridines as tetrafunctional donor–acceptor compounds have been used for the formation of the copper complex 4 and of the adduct 5 which is built from diborylbipyridine and a dihydroxydiboroxan derivative. The composition of the products follows from spectroscopic data and from X‐ray structure analyses for 2f , 4 , and 5 .