What are the systematic names for the following ion and compounds? (a) \(\left[c i s-\operatorname{Co}(\mathrm{en})_{2} \mathrm{Cl}_{2}\right]^{+}\) (b) \(\left[\mathrm{Pt}\left(\mathrm{NH}_{3}\right)_{5} \mathrm{Cl}\right] \mathrm{Cl}_{3}\) (c) \(\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{5} \mathrm{Cl}\right] \mathrm{Cl}_{2}\)

Short Answer

Expert verified
(a) cis-dichlorobis(ethylenediamine)cobalt(III) ion. (b) pentaamminechloroplatinum(IV) chloride. (c) pentaamminechlorocobalt(III) chloride.

Step by step solution

01

Naming the Complex Ion (a)

The compound contains the central cobalt (Co) metal ion bonded to two ethylenediamine (en) and two chloride (Cl) ligands. Here, 'cis' indicates the spatial arrangement where the similar ligands are adjacent to each other. The name follows the order: prefix showing number of ligands - ligand's name - central metal ion's name (with oxidation state in Roman numerals) - anion's name (for complex ions, not neutral compounds). Therefore, the name is \[cis-dichlorobis(ethylenediamine)cobalt(III) ion\].
02

Naming the Complex Ion (b)

The compound contains the central platinum (Pt) metal ion bonded to five ammonia (NH3) and one chloride (Cl) ligands. The name follows the same order as mentioned before, resulting in the systematic name \[pentaamminechloroplatinum(IV) chloride\].
03

Naming the Complex Ion (c)

The compound contains the central cobalt (Co) metal ion bonded to five ammonia (NH3) and one chloride (Cl) ligands. Applying the same naming rules from above, the systematic name is \[pentaamminechlorocobalt(III) chloride\].

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