Question

[Co (H2O)4(NH3 )2]Cl3 iupac name

Answer 1

IUPAC name $[Co(H_2O)_4(NH_3)_2]Cl_3$ is diamminetetraaqua cobalt (III) chloride.

Explanation:

Rules for naming of the coordination compounds :

a) The ligands are named first then metal.

b) The charge of metal indicated with the Roman numerals and enclosed in the parenthesis after metal name.

c) The ligands are named in alphabetical order before the metal ion.

d) Ligands that include a numerical prefix in the name use the prefixes bis for 2, kis for 3, or  or 4 to indicate their number.

e) If the complex ion is an anion, we drop the ending of the metal name and add -ate

In the given coordination compound,  Co is the cobalt metal, $H_2O$ is named as aqua, $NH_3$ is named as ammine.

Aqua and ammine both are neutral.

x+4(0)+2(0)= +3

x = +3

Hence, the IUPAC name of $[Co(H_2O)_4(NH_3)_2]Cl_3$ is diamminetetraaqua cobalt (III) chloride.

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