Question

Which of the following is correct IUPAC name of any complex compound?

• A. Tris(acetylacetonato)iron(III)chloride
• B. Hexachloroplatinum(IV)tetraammine dicyano platinate(IV)
• C. Ammine bromochloro methylamine platinum(II)
• D. cis-dichloro (ethylenediamine) platinum (II)

Answer 1

Answer: (C)

Ammine bromochloro methylamine platinum(II)

(A) The IUPAC name Tris(acetylacetonato)iron(III)chloride is incorrect. Its corrected name is Tris(acetylacetonato)iron(III). The molecule is neutral and cannot have chloride ligand. Thus option A is incorrect.

(B) The IUPAC name Hexachloroplatinum(IV)tetraammine dicyano platinate(IV) is incorrect. Its corrected name is Tetraammine dicyanoplatinum(IV)hexachloroplatinate(IV).

Tetraammine dicyanoplatinum(IV) is the complex cation and is named first. Hexachloroplatinate(IV) is the complex anion and is named after the name of the complex cation. Thus option B is incorrect.

(C) The IUPAC name Ammine bromochloro methylamine platinum(II) is correct. All the ligands are named in the alphabetical order and the charge on the central metal ion and the charge on the complex is balanced with appropriate charges on the ligands Thus option $\text{C}$ is $\text{correct}$.

(D) The IUPAC name cis-dichloro (ethylenediamine) platinum (II) is incorrect. Its corrected name is Dichloro (ethylenediamine) platinum(II). The prefix cis is not necessary as it is a square planar complex containing a bidentate ligand and trans isomer is nor possible. Thus option D is incorrect.

Hence, the correct option is $\text{C}$