TEORI MEDAN KRISTAL (CRYSTAL FIELS THEORY).ppt

KIMIA ANORGANIK III

CRYSTAL FIELD THEORY (TEORI MEDAN KRISTAL)

COORDINATE COVALENT BONDS AND GEOMETRY Valence Bond Theory versus Crystal Field Theory Valence Bond

hybridization

Octahedral

d2sp3

Tetrahedral

sp3

Square planar

dsp2

“low spin” and “high spin” complexes

BENTUK-BENTUK ORBITAL d

2

3

Formation of d sp orbitals

Draw the d -orbital splitting diagrams for the octahedral complex ions of each of the following. a. Fe2+ (high and low spin) b. Fe3+ (high spin) c. Ni2+ d. Zn 2+ e. Co2+ (high and low spin) How many unpaired electrons are in the following complex ions? a. [Ru(NH3)6 2+ (low-spin case) b. Fe(CN)63- (low-spin case) c. Ni(H2O)62+ d. V(en)33e. CoCl 2-

The 4 ligands in a tetrahedral crystal field

Tetrahedral crystal field splitting energy

The d orbital energy level diagram for an octahedral complex

Free Co orbitals

The d energy diagrams for square, planar, and linear complexes