Question

Give the systematic name of this coordination compound [co(nh3)5cl]cl2

Answer 1

The systematic name of the coordination compound [Co(NH3)5Cl]Cl2 is pentaaminechlorocobalt(III) chloride. The complex ion has a central cobalt ion with an oxidation state of +3, surrounded by five ammonia and one chloride ligands, reflecting a coordination number of six.

Step-by-step explanation:

The systematic name for the coordination compound [Co(NH3)5Cl]Cl2 follows the rules for naming ionic compounds where the cation, which is the complex ion in this case, is named first followed by the anion. In the complex ion [Co(NH3)5Cl]2+, cobalt is the central metal with an oxidation state of +3. The complex is composed of five ammonia ligands (NH3), which are neutral, and one chloride ion (Cl-) as a ligand. Considering the charge of the ligands and the overall charge on the complex, the oxidation state of cobalt can be determined using the equation +2 = -1 + x, giving us x = +3. Therefore, naming the complex ion based on the number of each type of ligand and the oxidation state of the metal, we get pentaaminechlorocobalt(III). Adding the counter ions, which are two chloride ions (Cl-), the full systematic name is pentaaminechlorocobalt(III) chloride. The coordination number indicates the number of ligand attachment points to the central atom, which in this case is six (5 ammines + 1 chloride).

Answer 2

[Co (NH₃)₅ Cl] Cl₂

First identify the positive part and name it first:

Sphere is the positive part, we will name it first. In sphere ligands are name first in alphabetical order regardless of the prefix used. So, we are having 5 Ammines (common name for ammonia as it is neutral) and one Chlorido (those ligands which contain -ve charge ends with -o). So, ammine comes first and Chlorido second,

Pentaamminechlorido

As the charge on sphere is +ve so the name of Metal will remain unchanged (i.e. Cobalt) and the oxidation state of Co is +3 so it is written in barcket and in roman. i.e.

Pentaamminechlorido cobalt (III)

At last name the negative part of complex, So,

Pentaamminechlorido cobalt (III) chloride