CBSE Class 12 · 2007 · Delhi · Coordination CompoundsShort Answer

Write the name and draw the structure of each of the following complex compounds:
i) [Co(NH

_{3}

)

_{4}

_{2}

_{2}

]Cl

_{3}

ii) [Pt(NH

_{3}

)

_{4}

][NiCl

_{4}

]

Solution

(i) \textbf{Tetraamminediaquacobalt(III) chloride}: octahedral Co(III) with four NH

_{3}

and two H

_{2}

O at the six vertices (the two aqua ligands may be drawn cis or trans); three Cl

^{-}

outside.
(ii) \textbf{Tetraammineplatinum(II) tetrachloridonickelate(II)}: the cation [Pt(NH

_{3}

)

_{4}

]

^{2 +}

is square planar (dsp

^{2}

); the anion [NiCl

_{4}

]

^{2 -}

is tetrahedral (sp

^{3}

) — drawn as the two separate coordination entities.

CBSE Class 12 Board · 2007 · Delhi · Subjective