Question

The shape of $[PtC{l}_3(C_2{H}_4){]}^{-}$ and the hybridisation of $Pt$ respectively are

• A. tetrahedral, $s{p}^3$
• B. trigonal pyramidal, $s{p}^3$
• C. square planar, $ds{p}^2$
• D. square planar, $d^{2}s{p}^3$

Answer 1

Answer: (C)

Zeise's salt : $[K\left[PtC{l}_3\left({\eta }^2-C_3{H}_4\right)\right]$ is a

$\pi$ -complex and square planar in structure with $ds{p}^2$ hybridisation.



Hybridisation in ${\left[PtC{l}_3\left({\eta }^2-C_2{H}_4\right)\right]}^{-}$

Pt atom : $4d^{8}5s^2$





As $C{l}^{-}$ ions and $C_2{H}_4$ approaches, the pairing of the unpaired electrons of $d$ orbitals takes place.

$\therefore \left[PtC{l}_3\left(C_2{H}_4\right)\right]$