The coordination number of Ni in the complex is 4, the configuration of Ni⁺² , at first sight, shows that the complex is formed by sp ³ hybridization  and it is paramagnetic and it has two unpaired electrons. However, experiments show that the complex is diamagnetic, i.e. it do not have unpaired electrons, this is possible when 3d electrons rearrange against the hund's rule as shown in the below configuration. This is also in accordance with the fact that the ligand involved here is a strong i.e. CN^- ion.Hence now dsp2 hybridization, involving one 3d, one 4s and two 4p orbitals, takes place leading to four dsp2 hybrid orbitals, each of which accepts four electron pairs from CN^-  ion forming

[Ni (CN⁴)] ² ion. Thus the resulting complex is square planar and is diamagnetic as it has no unpaired electrons.

Posted Date: 3/8/2013 5:30:09 AM | Location : United States

Ask an Expert

Related Discussions:- Why octahedral complexes of ni+2 must be outer orbitals?, Assignment Help, Ask Question on Why octahedral complexes of ni+2 must be outer orbitals?, Get Answer, Expert's Help, Why octahedral complexes of ni+2 must be outer orbitals? Discussions

Write discussion on Why octahedral complexes of ni+2 must be outer orbitals?
Your posts are moderated

Write your message here..

Related Questions

#space lattice, #space lattice, unit cell, calculation of particles per uni... #space lattice, unit cell, calculation of particles per unit cell, laws of crystallography, symmetry elements in crystals, derivation of braggs equation#

Differencess between the mesomeric and resonance effect, Mesomeric forms ar... Mesomeric forms are the possible locations of electrons at a single instant, if you get what I mean. Like, an adjacent double and single bond in a molecule. The resonance form, how

#title, definition of milli equivalent definition of milli equivalent

Physical properties of acrylic acid, Physical Properties of Acrylic Acid ... Physical Properties of Acrylic Acid a. Acrylic Acid is colourless pungent smelling liquid. Its boiling point is 141°C. b. Acrylic Acid is miscible with alcohol, water and et

What are enzyme cofactors , Some enzymes require other associated molec... Some enzymes require other associated molecules to work. These molecules are known as enzyme cofactors and they can be, for example, organic ions, like mineral salts, or organic mo

#title., Assignment is diagonal between berilium and aluminium Assignment is diagonal between berilium and aluminium

Which elements is a covalently bonded crystal, Name the Which is a covalent... Name the Which is a covalently bonded crystal? germanium

Laws of chemical combination, two oxides of a metal contain 27.6% and 30% o... two oxides of a metal contain 27.6% and 30% oxygen. if the formula for the first oxide is m3o4 then what is the formula for the next oxide?

Evaportion, Evaporation theory and describe advantages, disadvantages and a... Evaporation theory and describe advantages, disadvantages and application?

Equivalent weight, how to calculate equivalent weight of LMnO4 how to calculate equivalent weight of LMnO4