大学化学 >> 2020, Vol. 35 >> Issue (4): 152-160.doi: 10.3866/PKU.DXHX201911051

所属专题: 全国大学生化学实验创新设计竞赛

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2-羟基-1-萘甲醛缩邻苯二胺席夫碱及其铜(Ⅱ)配合物的合成及组成测定——介绍一个大学化学综合实验

罗米娜(), 朱鹏飞, 陈馥, 邓茂青, 甘绮龙, 陈龙   

  • 收稿日期:2019-11-25 录用日期:2019-12-06 发布日期:2020-02-07
  • 通讯作者: 罗米娜 E-mail:luo_mn@126.com
  • 基金资助:
    四川省2018-2020年高等教育人才培养质量和教学改革项目(JG2018-383);四川省2018-2020年高等教育人才培养质量和教学改革项目(JG2018-393)

Synthesis and Composition Determination of 2-Hydroxy-1-Naphthalene Formaldehyde o-Phenylenediamine Schiff Base and Its Copper(Ⅱ) Complexes: An Introduction of a Comprehensive Chemical Experiment

Mina Luo(), Pengfei Zhu, Fu Chen, Maoqing Deng, Qilong Gan, Long Chen   

  • Received:2019-11-25 Accepted:2019-12-06 Published:2020-02-07
  • Contact: Mina Luo E-mail:luo_mn@126.com

摘要:

设计开发了一个大学化学综合性实验,合成了2-羟基-1-萘甲醛缩邻苯二胺席夫碱及其铜(Ⅱ)配合物,分别采用化学分析法和仪器分析法对配合物的组成进行了测定,并结合红外光谱、核磁共振氢谱对产物的结构进行了表征,取得了满意的实验结果。该实验一定程度上弥补了大学化学教学实验中合成有机金属配位化合物教学资源的匮乏。通过该实验的实施,可使学生进一步巩固回流、纯化、离心等基本操作技能,掌握摩尔比法测定配合物配位数及稳定常数的原理和方法,同时掌握运用有机波谱技术推断和鉴定分子结构的方法。本实验有利于培养学生综合运用有机化学、无机化学、化学分析及仪器分析等知识解决具体问题的能力,同时有利于学生了解席夫碱及其金属配合物的性质、研究动态等,激发学生对科学研究的热情,培养学生系统的科学思维和研究能力。

关键词: 席夫碱, 有机金属配合物, 配合物组成, 综合性实验

Abstract:

A comprehensive chemistry experiment was designed. In this article, the synthesis process of 2-hydroxy-1-naphthalene formaldehyde o-phenylenediamine Schiff base and its copper(Ⅱ) complex was successfully optimized. The composition of the above complex was determined by chemical and instrumental analysis, while the structure was characterized by FTIR and 1H NMR. All of the experimental results are excellent. In general, this experiment could make up for the shortage in teaching synthesis of organometallic coordination compounds. From this experiment, students could consolidate and improve their basic experimental skills such as reflux, purification and centrifugation. They could master the principle and method of the molar ratio method to determine the coordination number and stability constant of complexes. Meanwhile they could understand how to characterize the molecule structure by spectroscopy. It is beneficial for cultivating students' ability to comprehensively apply organic chemistry, inorganic chemistry, chemical analysis and instrumental analysis knowledge to solve specific problems. Besides, it is also helpful for students to understand the properties and research trends of the Schiff base and its metal complexes, stimulating students' enthusiasm for scientific research, cultivating a systematic scientific thinking and research ability.

Key words: Schiff base, Organometallic complex, Complex composition, Comprehensive experiment

MSC2000: 

  • G64