Question:

As per IUPAC nomenclature, the name of the complex $[Co (H_2O )_4(NH_3 )_2]Cl_3$ is

Updated On: Jul 14, 2022
  • tetraaquadiaminecobalt (III) chloride
  • tetraaquadiamminecobalt (III) chloride
  • diaminetetraaquacobalt (II) chloride
  • diamminetetraaquacobalt (III) chloride
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The Correct Option is D

Solution and Explanation

The IUPAC name of the given complex is diaminetetraaquacobalt $(III)$ chloride. [ $\therefore$ Alphabetic order of legands $=$ ammine $>$ aqua and oxidation state of C?? $x+2 \times 0+4 \times 0+(-1) 3 =0 $ $x-3 =0 $ $X =+3$]
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Concepts Used:

Coordination Compounds

A coordination compound holds a central metal atom or ion surrounded by various oppositely charged ions or neutral molecules. These molecules or ions are re-bonded to the metal atom or ion by a coordinate bond.

Coordination entity:

A coordination entity composes of a central metal atom or ion bonded to a fixed number of ions or molecules.

Ligands:

A molecule, ion, or group which is bonded to the metal atom or ion in a complex or coordination compound by a coordinate bond is commonly called a ligand. It may be either neutral, positively, or negatively charged.