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Using solid benzohydroxamic acid (BHA) as a model compound for its salts, a broad absorption at 2730cm −1 was generally agreed to represent the ν(OH) band of the OH⋯ON bonds. The absence of ν(OH) band in the IR region 3600–1700cm −1 was taken to indicate the absence of OH groups in the solid salts. The same argument and conclusion was erroneously accepted for lithium (LiBHA) and potassium...
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