Question

Ligand1 is an anionic tridenate ligand,consisting of three diffrent hetro cyclic rings joined together, which reacts with [Fe(H2O)6](BF4)2 to produce complex 2.whose crystal structure was determind at 180k and has distorted octahedral geometry.what is the function of KO^tBu in the synthesis of ligand 1

Answer 1

Ligand 1: Anionic Tridentate Ligand, with 3 different Heterocyclic rings

Ligand 2 : Crystal Structure determined at 180 K

Ligand 1 reacts with [Fe (H₂O)₆] (BF₄)₂ to form Ligand 2

[Fe (H₂O)₆] (BF₄)₂ is Iron (II) tetrafluoroborate hexahydrate

Anionic tridentate ligand is abbreviated as Tm

Function of KOtBu in the synthesis of Ligand 1:

KOtBu is Potassium t-Butoxide which is a strong base and show sensitivity towards the steric interactions. It is devoid of sufficient nucleophile and show poor presence of the same. It is used in the elimination reactions and removes the proton from the smaller group, thus leading to the formation of less subsituted alekenes. It finds application in the dehydrohalogenation reactions.