CHM333H5 Lecture Notes - Lecture 2: Theater For The New City
Document Summary
Spherical: equal energy orbitals when ligands come in equally. Orbitals pointing towards ligands become higher in energy and ligands pointing away from ligand are lower in energy. Assume that ligands pulled away from metal along z axis. Systems with 8d electrons such as pt and pd. Low spin = 4 x 2/5 0 = 8/5 0. High spin = 3 x 2/5 0 - 1 x 3/5 0 = 3/5 0. Tetrahedral = 2 x 3/5 t - 2 x 2/5 t = 2/5 t ~ 1/5 0. *** octahedral more stable than tetrahedral, except d5 and d10 because making 6 bonds (exothermic) is more stable than. 1-3 go into t2g orbitals closer to the nucleus while 4-5 go into eg orbitals which are further from the nucleus. D10 (zn2+) => spectroscopically and magnetically silent because all electrons are paired up.
