《紅外光譜》ppt課件-全文預覽
【正文】 le 1 (P13) ?IR用來監(jiān)控含有效成份 XR375藥片的生產過程 。例： C9H8O2 CnHm ? ? can be calculated readily from the molecular formula by applying the following rules: Rule 1: Replace all halogens in the molecular formula by hydrogens. Rule 2: Omit oxygens and sulfurs. Rule 3: For each nitrogen, omit the nitrogen and one hydrogen. 122)22( ??????? mnmnExample ? Determine the unsaturation index of a pound with the molecular formula C8H8NOBr. Rule 1: X ? H: C8H9NO Rule 2: omit oxygens: C8H9N Rule 3: For N, omit N and H: C8H8 ? Therefore, n = 8, m = 8 512882 )22( ???????? mn5)2882(21 ?????UCompound A, with molecular formula C6H10, reacts with H2/Ni to give pound B, with molecular formula C6H12. The IR spectrum of pound A is provided. From this information about pound A tell (1)Its unsaturation index(2)The number of rings or bonds (or both) (3)What structural features. H?C=C C?H C?C C?H 1HC 126?U2HC 106?U C?C 例 3 某未知物分子式為 C10H12O, 試根據(jù)其 IR數(shù) 據(jù) 3020(w)、 28 27 1700、 16 157 1390、 136 830cm1，推測其結構
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