Question

The correct IUPAC name of $M{n}_3(CO{)}_{12}$ is:

• A. mangesedodecylcarbonyl(0)
• B. dodecacarbonylmanganate(0)
• C. dodecacarbonylmanganic(II)
• D. dodecacarbonyltrimanganese(0)

Answer 1

Answer: (D)

dodecacarbonyltrimanganese(0)

The correct IUPAC name of $M{n}_3(CO{)}_{12}$ is $dodecacarbonyltrimanganese\left(0\right)$. The central metal atom is a cobalt atom in zero oxidation state. The oxidation state is written in parenthesis. Three such $Mn$ atoms are present. Hence, the prefix tri is used. $12$ carbonyl groups are present. Hence, the prefix $dodeca$ is used.