Question

What is the IUPAC name of the following coordination compound ? $K_2\left[Zn\right(OH{)}_{2}C{l}_2]$

• A. Potassium dihydroxodichloridozinc(II)
• B. Potassium dihydroxodichlorozincate(IV)
• C. Potassium dihydroxodichloridozincate(II)
• D. Potassium dichloridodihydroxozincate(II)

Answer 1

The correct option is D

Potassium dichloridodihydroxozincate(II)

There are two potassium atoms and usually, they exist in the +1 oxidation state. Hence, the anion is: $\left[Zn\right(OH{)}_{2}C{l}_2{]}^{2-}$ .

The hydroxide and chloride both will have a negative charge each. There are 2 of each and thus the central metal atom in the coordination sphere - $Zn$ is in the (II) oxidation state.

so, the IUPAC name is: Potassium dichloridodihydroxozincate(II)