Question
Chemistry Question on coordination compounds
(a)CoCl3⋅4NH3,(b)CoCl3⋅5NH3,(c)CoCl3.6NH3 and (d)CoCl(NO3)2⋅5NH3.Number of complex(es) which will exist in cis-trans form is/are______.
Answer
The correct answer is 1
CoCl3⋅4NH3 ⇒ [Co(NH3)4Cl2]Cl
CoCl3⋅5NH3 ⇒ [Co(NH3)5Cl]Cl2
CoCl3⋅6NH3 ⇒ [Co(NH3)6]Cl3
Only [Co(NH3)4Cl2] can show geometrical isomerism. Hence can exist in cis-trans form.