Patent ID: 8426551

Claim:
A polymerizable composition comprising at least one metal thietane compound represented by the following general formula (110), (wherein, in the above general formula (110), M is one metal atom selected from the group consisting of Bi and Sb; X 1 and X 2 are each independently a sulfur atom or an oxygen atom; R 1 is a divalent organic group; m is an integer of 0 or 1 or more; n is the number of valence of M; p is an integer of equal to or more than 1 and equal to or less than n; q is an integer of 0 or equal to or more than 1 and equal to or less than n−2; Y is a monovalent or divalent group; T is an inorganic or organic group; and r is 1 or 2, provided that when r is 1, q is 0 and Y is a monovalent inorganic or organic group; when r is 1 and n−p−q is 2 or more, a plurality of Ys contained are each independently selected from monovalent inorganic or organic groups; when r is 1 and n−p−q is 2 or more, a plurality of Ys may be bonded to each other to form a ring containing a metal atom M; when r is 2, n−p−q is 1 or 2 and Y is a divalent group; when r is 2 and n−p−q is 2, two Ys may form a ring together with two metal atoms Ms; and when r is 2 and q is 2, a plurality of Ts contained are each independently selected from inorganic or organic groups).