Acetyl cyanide is a chemical compound that contains both a nitrile and a carbonyl functional group. Therefore, the molecule falls into the cyanide group as well due to the presence of the carbon nitrogen triple bond. This molecule is part of the acyl cyanide family. Acetyl cyanide is a chemical compound that contains both a nitrile and a carbonyl functional group. Therefore, the molecule falls into the cyanide group as well due to the presence of the carbon nitrogen triple bond. This molecule is part of the acyl cyanide family.