Q1. For the complex [ Fe (en)2 cl2 ] cl ( en= ethylenediamine) identify
i) the hybrid orbitals and the shape of the complex,
ii) the magnetic behaviour of the complex.
In [Fe(en)2Cl2]Cl, Fe exist as Fe(III) ion.
It is an octahedral complex (sp3d2 hybridisation) with one unpaired electron so it will be paramagnetic in nature.
[Fe(en)2Cl2]+ consists two didentate ligands en(ethylenediamine) and two unidentate ligands (Cl). It will exist in two geometrical isomers cis and trans and the cis isomer will further have two optical isomers.
trans-form
The optical isomers of cis-forms