Question

Hexamminecobalt(III) Chloride inorganic chemistry

Can some one dump info on the crystal field theory for the octahedral with a diagram of splitting included?

And the discussion of the spectrochemical series of the compound

Thanks

Answer 1

The type of octahedral complex; in such complex six ligands are located at the vertices of an octahedron surrounding the metal ion.
Assuming that these six specific ligands are located on the six axes of a three-dimensional Cartesian system with the metal ion at the origin of coordinates and see the figure in the shape of the d orbitals, the conditions are correct to assume the crystal field theory :
In this arrangement octahedral orbitals that are most severely deformed are those with majority components of the x, y, z. In the d orbitals can be noted that these orbitals are dz2 and dx2-y2, while DXY orbitals dxz and dyz receive much less interference, this causes originally degenerate d orbitals are separated into two groups with a difference Power is often called ?oct. Here dz2 and dx2-y2 form the largest group of energy and DXY eg, dxz and dyz form the group of lower energy t2g.

The spectrochemical series is a list of "force ligands" empirically derived based on the degree of separation ? they produce. From small to large ? ? are:
I- <Br- <S2 <SCN <Cl- <NO3 <N3 <F <OH- <C2O42- <H2O <NCS <CH3CN <p <NH3 <in <bipy <phen <NO2 < PPh3 <CN- <CO