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Boron Chelates of N-Substituted Hydroxamic Acids
Kliegel, Wolfgang,Nanninga, Dierk
, p. 2616 - 2629 (2007/10/02)
Boron chelates 2 - 6 are synthesized from N-alkyl- or N-arylhydroxamic acids 1 and various boron compounds that are capable of being chelated by bidentate ligands.The spectroscopic data correspond to the cyclic B,N-betaine structure of 2 - 6 and reflect the Lewis acidity of the chelated borenium ions as well as the extent of electron delocalization in the hydroxamate ligands.
