Coordination CompoundHard
Question
Which of the following are square planar complexes ?
(1) [AuCl4]- (2) [Pt(Cl)4]2- (3) [Mn(Br)4]2- (4) [Cu(NH3)4]2+
Select the correct answer using the codes given below.
(1) [AuCl4]- (2) [Pt(Cl)4]2- (3) [Mn(Br)4]2- (4) [Cu(NH3)4]2+
Select the correct answer using the codes given below.
Options
A.1 and 2 only
B.2 and 3 only
C.2 and 4 only
D.1, 2 and 4 only
Solution
(1) [Au+3Cl4]- - highly charged species with 5d8 has greater CFSE and thus ᐃt > P and so dsp2 hybridisation.
(2) [Pt(Cl)4]2- - 5d8 has greater CFSE and thus ᐃt > P and so dsp2 hybridisation.
(3) [Mn(Br)4]2- - sp3 hybridisation as Br- is weak field ligand.
(4) [Cu(NH3)4]2+ - dsp2 hybridisation, one d-electron jumped to 4p-orbital leaving behind one empty
d-orbital for dsp2 hybridisation.
(2) [Pt(Cl)4]2- - 5d8 has greater CFSE and thus ᐃt > P and so dsp2 hybridisation.
(3) [Mn(Br)4]2- - sp3 hybridisation as Br- is weak field ligand.
(4) [Cu(NH3)4]2+ - dsp2 hybridisation, one d-electron jumped to 4p-orbital leaving behind one empty
d-orbital for dsp2 hybridisation.
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