By pattern recognition chemical bond parameter method, the formability of NaZn<sub>13</sub> type and BaCd<sub>11</sub> type ternary compounds in RE-M Si (RE=La-L
Nine sub-binary phase diagrams of the RECl<sub>3</sub>-CaCl<sub>2</sub>,RECl<sub>3</sub>-MgCl<sub>2</sub> and CaCl<sub>2</sub>-MgCl<sub>2</sub> systems,andtherm