Knowledge Bank

“In order to assign the metal-ligand stretching vibration in the metal chelate compounds of oxalato ion (ox), a normal coordinate treatment has been made on the 1:2 complex model for $K2[Pt(ox)2]$ and on the 1:3 complex model for $K3[Cr(ox)3]3H2O$, so as to take into account all of the interactions between the ligands. Similar calculations on the metal chelate compounds of dithiooxalato ion will also be reported. The realtionships between the stretching force constants and the structures of these chelate rings will be discussed.