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Demonstrating the Presence of Cyanide in Bitter Seeds while Helping Students Visualize Metal-Cyanide Reduction and Formation in a Copper Complex Reaction
被引：10
|作者：
Volpi, Giorgio
[1
]
机构：
[1] Univ Turin, Dept Chem, Via P Giuria 7, I-10125 Turin, Italy
关键词：
High School/Introductory Chemistry;
First-Year Undergraduate/General;
Inorganic Chemistry;
Food Science;
Forensic Chemistry;
Organometallics;
Qualitative Analysis;
Laboratory Instruction;
Equilibrium;
NAKED-EYE DETECTION;
CYANOGENIC GLYCOSIDES;
TEMPLATE MECHANISM;
NINHYDRIN;
APRICOT;
AMMONIA;
D O I：
10.1021/acs.jchemed.5b00750
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
An activity for hydrogen cyanide detection in bitter seeds is presented. The procedure is based on the absorption of hydrogen cyanide (HCN) from a mixture of chopped seeds into a ninhydrin or tetramminecopper(II) complex solution followed by their reaction. A qualitative experiment is proposed in order to demonstrate the presence of HCN in bitter seeds and to visualize metal-cyanide reduction and formation of an interesting mixed valence copper amino-cyanide complex: Cu-3(NH3)(4)(CN)(4).
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页码：891 / 897
页数：7
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