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Solution: What are the systematic names for the following

Chapter 23, Problem 15P

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QUESTION:

What are the systematic names for the following ions and compounds?

(a) \(\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{4} \mathrm{Cl}_{2}\right]^{+}\)

(b) \(\mathrm{Cr}\left(\mathrm{NH}_{3}\right)_{3} \mathrm{Cl}_{3}\)

(c) \(\left[\mathrm{Co}(\mathrm{en})_{2} \mathrm{Br}_{2}\right]^{+}\)

(d) \(\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{6}\right] \mathrm{Cl}_{3}\)

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QUESTION:

What are the systematic names for the following ions and compounds?

(a) \(\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{4} \mathrm{Cl}_{2}\right]^{+}\)

(b) \(\mathrm{Cr}\left(\mathrm{NH}_{3}\right)_{3} \mathrm{Cl}_{3}\)

(c) \(\left[\mathrm{Co}(\mathrm{en})_{2} \mathrm{Br}_{2}\right]^{+}\)

(d) \(\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{6}\right] \mathrm{Cl}_{3}\)

ANSWER:

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Coordination compound: Any of a class of substances with chemical structures in which a central metal atom is surrounded by nonmetal atoms or groups of atoms, called ligands, joined to it by chemical bonds.

The nomenclature of coordination compounds is as follows;

     Always cation is named before the anion.

     Ligands are named first, in alphabetical order and then the name of the metal atom or ion is written.

     Ligands are named first, in alphabetical order and then the name of the metal atom or ion is written.

     Di, tri, and tetra prefixes are used to designate the number of each type of ligand in the complex.

     The prefixes ,   are used if the ligand contains a Greek prefix or if it  is a polydentate ligand.

     The metal is named as the element, if the complex ion is a cation else the name is named with .

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