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采用一种新途径 ,利用反应物前体 2 ,6 二氨基己酸 (赖氨酸 )两端具有不对称结构的—NH2 基 ,成功地合成了一端与水杨醛 ,另一端与邻香草醛缩合形成的新型不对称双Schiff碱 .为与通常不对称Schiff碱区别起见 ,称之为“异双Schiff碱” .提出了这类Schiff碱及配合物的合成方法 ,并以此分别合成了包括钇的 1 2种稀土不对称Schiff碱新配合物 .对它们作了元素分析、摩尔电导、红外光谱 ,特别是1H与13 CNMR等表征 ,并研究和讨论了这类不对称Schiff碱分步缩合反应及其形成机理与稀土离子配位方式 .为合成类似不对称Schiff碱与配合物提供了一种新方法 .
A novel approach was developed to synthesize the -NH2 group with asymmetric structure at both ends of diaminocaproic acid (lysine) Condensation of the formation of a new type of asymmetric Schiff base asymmetric Schiff base for the general distinction, called “hetero-Schiff bases.” Synthesis of these Schiff bases and complexes were synthesized, and were synthesized, including Yttrium complexes were synthesized and characterized by elemental analysis, molar conductance, FTIR, especially 1H and 13 CNMR. The asymmetric Schiff bases were also studied and discussed Reaction and its formation mechanism and rare earth ion coordination mode, which provides a new method for synthesizing asymmetric Schiff base and complex.