Coordination Compounds

Fluorine

Fluoro

Fluorido

Fluorite

Negative ions only

Neutral molecules only

Both negative ions and neutral molecules

Only the central metal

Also non-directional

Directional

Variable

Ionizable

The 6 $CN^-$ ions only

The 4 $K^+$ ions and 6 $CN^-$ ions total charge balance

The 4 $K^+$ ions only

None of these

2

6

8

4

Anions only

Neutral molecules only

Either anions or neutral molecules

Cations only

3

4

6

1

Ionic bond

Coordinate covalent bond

Metallic bond

Hydrogen bond

1

2

3

4

Potassium pentacyanidocarbonylferrate(II)

Potassium carbonylpentacyanidoferrate(II)

Potassium carbonylpentacyanidoiron(II)

Potassium pentacyanidocarbonylferrate(III)

Hexaammineiron(III) chloride

Hexaammineferrate(III) chloride

Hexaammineiron(II) chloride

Hexaammineiron trichloride

Dichlorido(ethylenediamine)platinum(II)

Dichlorido(ethane-1,2-diamine)platinate(II)

Bis(chlorido)(ethane-1,2-diamine)platinum(II)

Dichlorido(ethane-1,2-diamine)platinum(II)

$[Co(NH_3)_6]^{3+}$

$[Co(en)_3]^{3+}$

trans-$[Co(NH_3)_4Cl_2]^+$

$[Co(NH_3)_5Cl]^{2+}$

Hydrate

Linkage

Coordination

Ionization

0

1

2

6

$d_{z^2}$

$d_{xy}$

$d_{x^2-y^2}$

$d_{yz}$

It does not explain geometry

It does not explain magnetic properties

It does not give a quantitative explanation of the color of complexes

It does not explain hybridization

$sp^3d^2$

$d^2sp^3$

$sp^3$

$dsp^2$

0

$-0.4 \Delta$

$-0.6 \Delta$

$1.0 \Delta$

9

10

8

0

$t_{2g}^4 e_g^2$

$t_{2g}^6 e_g^0$

$t_{2g}^3 e_g^3$

$t_{2g}^5 e_g^1$

$en$ (ethylenediamine)

$EDTA^{4-}$

$NH_3$

$H_2O$

High CFSE leads to lower stability

High CFSE leads to higher stability

CFSE has no relationship with stability

CFSE only affects the color, not stability

$\log \beta_n = \log K_1 + \log K_2 + ... + \log K_n$

$\log \beta_n = \log K_1 \cdot \log K_2$

$\log \beta_n = K_1 + K_2$

$\log \beta_n = \log(K_1 / K_n)$