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Red precipitate is obtained when ethanol solution of dimethylglyoxime is added to ammoniacal Ni(II). Which of the following statements is not true?
A
Dimethylglyoxime functions as bidentate ligand
B
Red complex has a square planar geometry
C
Complex has symmetrical H-bonding
D
Red complex has a tetrahedral geometry
Detailed Solution
The red precipitate is bis(dimethylglyoximato)nickel(II).
Each dimethylglyoximate ion binds through its two nitrogen atoms (bidentate), and the two ligands are held together by symmetrical O–H···O hydrogen bonds.
$Ni^{2+}$ ($d^8$) is $dsp^2$ hybridised here, so the complex is square planar and diamagnetic.
So the statement that it has a tetrahedral geometry is not true.
Each dimethylglyoximate ion binds through its two nitrogen atoms (bidentate), and the two ligands are held together by symmetrical O–H···O hydrogen bonds.
$Ni^{2+}$ ($d^8$) is $dsp^2$ hybridised here, so the complex is square planar and diamagnetic.
So the statement that it has a tetrahedral geometry is not true.