The IUPAC name of $[\mathrm{Ni}(\mathrm{NH}_{3})_{4}][\mathrm{NiCl}_{4}]$ is

(A) Tetrachloronickel (II) - tetraamminenickel (II)

(B) Tetraamminenickel (II) - tetrachloronickel (II)

(D) Tetrachloronickel (II) - tetraamminenickelate (0)

JEE Advanced · 2008 · 13 Apr 2008 · Paper 2 · Coordination Compounds

The IUPAC name of

[Ni (NH_{3})_{4}] [NiCl_{4}]

(A)Tetrachloronickel (II) - tetraamminenickel (II)
(B)Tetraamminenickel (II) - tetrachloronickel (II)
(C)Tetraamminenickel (II) - tetrachloronickelate (II)✓ Correct
(D)Tetrachloronickel (II) - tetraamminenickelate (0)

Answer: (C)

Solution

In IUPAC nomenclature for coordination compounds, the cation is named first followed by the anion. The cation

[Ni (NH_{3})_{4}]^{2 +}

is named tetraamminenickel(II). The anion

[NiCl_{4}]^{2 -}

is named tetrachloronickelate(II), where the suffix '-ate' indicates it is an anionic complex. Therefore, the complete name is tetraamminenickel(II) tetrachloronickelate(II).

JEE Advanced · 2008 · 13 Apr 2008 · Paper 2 · Single correct option

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