Q60P - Chemistry: Molecular Nature Of Matter And Change

Question

Give systematic names for the following formulas:

(a)  $\mathbf{\text{K}}\left[\text{Pt}\left({\text{NH}}_3\right){\text{Cl}}_5\right]$

(b) $\left[\text{Cu}\left(\text{en}\right){\left({\text{NH}}_3\right)}_2\right]\left[\text{Co}\left(\mathrm{en}\right){\text{Cl}}_4\right]$

(c)$\left[\text{Pt}{\left(\text{en}\right)}_2{\text{Br}}_2\right]{\left({\text{ClO}}_4\right)}_{\mathbf{2}}$

Step-by-Step Solution

Answer

a) $\text{K}\left[\text{Pt}\left({\text{NH}}_3\right){\text{Cl}}_{\text{S}}\right]$- potassium amminepentachloroplatinate(IV)

b) $\left[\text{Cu}\left(\text{en}\right){\left({\text{NH}}_3\right)}_2\right]\left[\text{Co}\left(\mathrm{en}\right){\text{Cl}}_4\right]$- diammine(ehtylenediammine)copper(II) 

(ethylenediammine)tetrachlorocobaltate(II)

c) $\mathrm{Pt}\left(\mathrm{en}\right){\text{Br}}_2{\left({\mathrm{Clo}}_4\right)}_2$- dibromobis(ethylenediammine)platinum(IV) perchlorate

Step 1: Definition of Coordination Compound

A coordination complex is made up of a core atom or ion, known as the coordination center, which is typically metallic, and an array of attached molecules or ions that are known as ligands or complexing agents.

Step 2: Solve the given statements

We must state certain principles for identifying coordination compounds in order to solve issues like these:

- cation is named before the anion

- In the complexion, we name ligands before metal ions, in alphabetical order

- A numerical prefix is the number of ligands of a particular type

- The oxidation state of the metal ion is written by roman numerals in parentheses if the metal ion has more than one oxidation state

- If the complex ion is an anion, we add -ate instead of the ending of the metal name

- Neutral ligands most often have molecule names, but anionic ligands lose the -ide and add after the root name

a) $\text{K}\left[\text{Pt}\left({\text{NH}}_3\right){\text{Cl}}_{\text{S}}\right]$- potassium amminepentachloroplatinate(IV)

b) $\left[\text{Cu}\left(\text{en}\right){\left({\text{NH}}_3\right)}_2\right]\left[\text{Co}\left(\mathrm{en}\right){\text{Cl}}_4\right]$- diammine(ehtylenediammine)copper(II) 

(ethylenediammine)tetrachlorocobaltate(II)

c) $\mathrm{Pt}\left(\mathrm{en}\right){\text{Br}}_2{\left({\mathrm{Clo}}_4\right)}_2$- dibromobis(ethylenediammine)platinum(IV) perchlorate