METAL COMPOUND, POLYMERIZABLE COMPOSITION CONTAINING THE SAME, RESIN, METHOD FOR PRODUCING THE RESIN AND USE OF THE RESIN

摘要

Disclosed is a metal compound represented by the following formula (0):
in the formula (0), A represents a thietane ring, or a monovalent group containing a thiol group; B represents a divalent group containing a heteroatom; R 2 represents a divalent organic group;
n represents the valence of M; p represents an integer of 1 ton;
M represents a lanthanoid atom or a barium (Ba) atom when A is a thietane ring, and represents a lanthanoid atom when A is a monovalent group containing a thiol group;
or more thanY represents a monovalent inorganic or organic group; when n-p is not less than 2, a plurality of Y's each independently represent a monovalent inorganic or organic group; and when n-p is not less than 2, the plurality of Y's may be bonded with each other to form a ring containing M.