Question

In: Chemistry

Write the IUPAC name for each of the following compounds: a. [Cr(NH3)5Cl]2+ b. [W(NH3)3(H2O)3]2+ c. [Fe(H2O)6]3+

Write the IUPAC name for each of the following compounds:

a. [Cr(NH₃)₅Cl]²⁺

b. [W(NH₃)₃(H₂O)₃]²⁺

c. [Fe(H₂O)₆]³⁺

Expert Solution

a.

[Cr(NH₃)₅Cl]²⁺

The coordination entity is positive, hence central metal atom is written as chromium.

ligands are ammine and chloro, alphabetically ammine is written before chloro, as 5 ammine groups are present therefore prefix penta is added.

ammine is neutral ligand, charge of chloro is -1 .

then, oxidation state of Cr = - 5 + 2 = + 3

hence IUPAC name is

Pentaamminechlorochromium (III) ion.

b.

[W(NH₃)₃(H₂O)₃]²⁺

The coordination entity is positive, hence central metal atom is written as tungsten.

ligands are ammine (NH₃) and aqua (H₂O), alphabetically ammine is written before aqua, as 3 ammine groups and 3 aqua groups are present therefore prefix tri is added before both ligands.

ammine and aqua both are neutral ligands.

oxidation state of W = +2.

Hence IUPAC name is

Triamminetriaquatungsten (II) ion .

c.

[Fe(H₂O)₆]⁺³

The coordination entity is positive , hence central metal atom is written as iron.

ligand is aqua (H₂O), six aqua is present, hence hexa is added as prefix.

aqua is neutral ligand, hence oxidation state of iron = +3

IUPAC name is Hexaaquairon (III) ion .

queen_honey_blossom answered 9 months ago

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