Metal compound, and catalyst component and catalyst for addition polymerization, and process for producing addition polymer

A metal compound obtained by a process comprising the step of contacting the following components (a) to (c), wherein the amount of the component (b) contacted is from 0.1 to 8 mol, and the amount of the component (c) contacted is from 0.5 to 8 mol, per 1 mol of the component (a), respectively:

• (a) a compound represented by the following formula [1]
• M1L1r [1]
• (b) a compound represented by the following formula [2]
• R1s−1TH [2], and
• (c) a compound represented by the following formula [3],
• R24−nJ(OH)n [3],
• wherein M1 is a metal atom of the Groups 12 to 15 in th the periodic table or a boron atom;
• r is a valence of M1;
• L1 is a hydrogen atom, a halogen atom, a hydrocarbon group or a hydrocarbon oxy group, and when two or more L1's exist, they may be the same or different from one another;
• T is a non-metal atom of the Group 15 or 16 in the periodic table;
• s is a valence of T;
• R1 is an electron-withdrawing group or an electron-withdrawing group-containing group, and when two or more R1's exist, they may be the same or different from one another;
• n is the number of from 2 to 4;
• J is a non-metal atom of the Group 14 in the periodic table;
• and R2 is a hydrocarbon group, and when two or more R2's exist, they may be the same or different from one another.