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Citation: Lingling Wei, Kejia Zhang, Shuni Li. Influence of Preparation Conditions on the Composition of Cobalt (III) Ammine Complexes[J]. University Chemistry, ;2020, 35(1): 64-69. doi: 10.3866/PKU.DXHX201905028 shu

Influence of Preparation Conditions on the Composition of Cobalt (III) Ammine Complexes

1.
School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, P. R. China;
2.
Basic Experimental Teaching Center, Shaanxi Normal University, Xi'an 710062, P. R. China

Received Date: 8 May 2019

The preparation of hexamine cobalt (III) chloride is an important basic experiment in inorganic chemistry laboratory. During the preparation process, the change of reaction conditions can easily alter the composition of cobalt(III) complexes. In order to help teachers and students better understand and establish the relationship among the experimental preparation conditions, the compositions, and the stability of different complexes,[Co(NH₃)₆]Cl₃,[Co(NH₃)₅Cl]Cl₂and[Co(NH₃)₅(H₂O)]Cl₃ complexes were prepared and studied. Through comparing their respective formation processes and preparation conditions, we could think deeply and apply basic chemical principles in discussing the experimental phenomenon, so as to stimulate students' research interest and cultivate their scientific research abilities.
- Basic inorganic chemistry laboratory,
- Cobalt (III) ammine complexes,
- Case analysis,
- Profound understanding,
- Preparation conditions
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