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研究了六亚甲基桥连的希夫碱及其锰(Ⅲ)络合物催化剂的红外光谱,对一些主要谱带进行了经验归属。配体的分子内氢键谱带出现在~3438cm-1(以LH为例),νC=N谱带在~1630cm-1(以CH为例,下同),苯的特征谱带在~1598,~1469和~755cm-1,νMn—N为主的复合振动在~369cm-1,δMn—N为主的复合振动在~247cm-1,νMn—O为主的复合振动在~329cm-1,δMn—O为主的复合振动在~275cm-1,νMn—Cl特征谱带在~303cm-1。与苯基锰(Ⅲ)卟啉络合物相比,νMn—N特征谱带向高波数位移,νMn—Cl特征谱带则向低波数有较大位移。
The infrared spectra of hexamethylene bridged Schiff base and its manganese (Ⅲ) complex catalyst were studied and some of the major bands were assigned. The intramolecular hydrogen bonding band of the ligand appears at -3438 cm -1 (LH). The ν C = N band at ~1630 cm -1 (for CH, the same below), the characteristic band of benzene varies from ~ 1598 , ~ 1469 and ~ 755cm-1, respectively. The complex vibration mainly dominated by ν-Mn-N was ~ 369cm-1 and the δMn-N-based composite vibration was ~247cm-1. The νMn- , The complex vibration of δMn-O is ~ 275cm-1 and the characteristic band of νMn-Cl is ~303cm-1. Compared with the phenyl manganese (Ⅲ) porphyrin complex, the ν Mn-N characteristic band shifts to a higher wave number, while the ν Mn-Cl characteristic band shifts to a lower wave number.