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Electrochemical and Ozone Oxidation of (CF 3 ) 3 B · NH 3 : Formation and Characterization of Products with Nondegradated (CF 3 ) 3 B Groups
Author(s) -
Brauer David J.,
Bürger Hans,
Chebude Yonas,
Pawelke Gottfried
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(19990202)1999:2<247::aid-ejic247>3.0.co;2-b
Subject(s) - chemistry , aqueous solution , electrochemistry , yield (engineering) , ozone , boron , single crystal , medicinal chemistry , nmr spectra database , inorganic chemistry , crystallography , organic chemistry , electrode , spectral line , materials science , metallurgy , physics , astronomy
Abstract (CF 3 ) 3 B · NH 3 ( 1 ) has been oxidized in aqueous solution using a platinum anode. At pH = 8–9 in CsOH/Cs 2 CO 3 solution Cs[(CF 3 ) 3 B–NO 2 ] ( 2 ), Cs 2 [(CF 3 ) 3 B–N(O)=N(O)–B(CF 3 ) 3 ] ( 3 ) and Cs 2 [(CF 3 ) 3 B–N=N(O)–B(CF 3 ) 3 ] ( 4 ) are formed. Compound 3 slowly hydrolyses to yield the hydroxyborate Cs[(CF 3 ) 3 B–OH] ( 5 ). Compound 2 and traces of 3 and 5 were also formed by oxidation of 1 or (CF 3 ) 3 B · NHEt 2 with ozone. The constitution of the novel borates has been deduced from multinuclear NMR, IR and mass spectra. The structures of 2 – 5 have been investigated by single‐crystal X‐ray diffraction.