Chemistry Coordination Compounds

EAN = Atomic No. – Oxidation state + 2 * CN

= 26 – 2 + 2 * 6

= 36.

Cis (optically active)                          Trans (optically inactive)

d & l form (2)                                                    (1)

So, total 3 isomerism.

CoCl₃.NH₃ + AgNO₃ $\stackrel{}{\to }AgC\mathcal{l}\downarrow \left(2mol\right)$  

$\left[Co{\left(N{H}_3\right)}_{5}C\mathcal{l}\right]C{\mathcal{l}}_2+AgN{O}_3\stackrel{}{\to }AgC\mathcal{l}\downarrow \left(2mol\right)$  

x = 5

For precipitation of two moles of AgCl

Two Cl^- will produce as a free anion

CoCl₃.4NH₃ -> complex will $\left[CO{\left(N{H}_3\right)}_{4}C{l}_2\right]$  Cl (will not give 2Cl^-)

$PtC{l}_4.2HCl\to$  complex will be H₂ [PtCl₆] will not any Cl^-

$NiC{l}_2.6H_{2}O\to \left[Ni{\left(H_{2}O\right)}_6\right]C{l}_2$  will produce two Cl^- ion.

${\left[Ni{\left(H_{2}O\right)}_6\right]}^{++}+2C{l}^{-}\underset{AgN{O}_3}{\overset{}{\to }}2AgCl\left(s\right)$  precipitate formation

$N{i}^{2+}\to \left[Ar\right]3d^{8}4s^0$  

All metal carbonyls have synergic bonds

CoCl₃.NH₃ + AgNO₃ $\stackrel{}{\to }AgC\mathcal{l}\downarrow \left(2mol\right)$

$\left[Co{\left(N{H}_3\right)}_{5}C\mathcal{l}\right]C{\mathcal{l}}_2+AgN{O}_3\stackrel{}{\to }AgC\mathcal{l}\downarrow \left(2mol\right)$  

x = 5

$M{n}^{2+}\stackrel{}{\to }{t}_{2g^{111}}{e_g}^{11}$

(Number of unpaired electron = 5)

${\mu }_S=\sqrt[]{35}=5.91\cong 6$

${\left[Ni{\left(CN\right)}_4\right]}^{2-}$  

CN^- is strong field ligand

$N{i}^{2+}=4s^{0}3d^8$  

 Here; ${\left[Ni{\left(CN\right)}_4\right]}^{2-}$ is square planar and diamagnetic.

$\left[Ni{\left(CO\right)}_4\right]$  

Ni = 4s²3d⁸         Co is strong field ligand.

Here ;  $\left[Ni{\left(CO\right)}_4\right]$  is tetrahedral and diamagnetic

${\left[Ni{\left(CN\right)}_4\right]}^{2-}$  has 3d⁸ configuration while $\left[Ni{\left(CO\right)}_4\right]$  has 3d¹⁰ configuration.

From the given structure of CuSO₄ . 5H₂O Cu (II) ion and oxygen bonds are present but ligands coordinating with Cu (II) ion are not O and S both.

$\left[Cu{\left(en\right)}_2{\left(SCN\right)}_2\right]$

More stable isomers = 3 (trans isomers)