1. Tardigrade
  2. Question
  3. Chemistry
  4. NiCl2 in the presence of dimethyl glyoxime (DMG) gives a complex which precipitates in the presence of NH4OH , giving a bright red colour. (a) Draw its structure and show H-bonding (b) Give oxidation state of Ni and its hybridisation (c) Predict whether it is paramagnetic or diamagnetic

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Q. $NiCl_2 $ in the presence of dimethyl glyoxime (DMG) gives a complex which precipitates in the presence of $NH_4OH , $ giving a bright red colour.
(a) Draw its structure and show $H$-bonding
(b) Give oxidation state of $Ni$ and its hybridisation
(c) Predict whether it is paramagnetic or diamagnetic

IIT JEEIIT JEE 2004Coordination Compounds

Solution:

Oxidation state of $Ni$ is $+2$ and hybridisation is $dsp^2. $
$\mu =0 $ (no unpaired electron) hence, diamagnetic.

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