CBSE Class 12 · 2010 · Delhi · Coordination CompoundsShort Answer

Name the following coordination compounds according to the IUPAC system of nomenclature:
i) [Co(NH

_{3}

)

_{4}

_{2}

O)Cl]Cl

_{2}

ii) [CrCl

_{2}

(en)

_{2}

]Cl (en = ethane-1,2-diamine)

Answer: (i) Tetraammineaquachloridocobalt(III) chloride. (ii) Dichloridobis(ethane-1,2-diamine)chromium(III) chloride.

Solution

(i) Ligands alphabetically — ammine, aqua, chlorido; charge: (−1) + x = +2 ⇒ Co(III).
\textbf{Tetraammineaquachloridocobalt(III) chloride}
(ii) chlorido before ethane-1,2-diamine; 2(−1) + x = +1 ⇒ Cr(III).
\textbf{Dichloridobis(ethane-1,2-diamine)chromium(III) chloride}

CBSE Class 12 Board · 2010 · Delhi · Subjective

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