Patent ID: 8791261

Claim:
A polyhedral transition metal complex comprising a hollow shell, the hollow shell including n2, where n2 is 6, 12, 24, 30, or 60, transition metal atoms and 2(n2) bidentate organic ligands, the transition metal atoms being one type of transition metal atom selected from the group consisting of Ti, Fe, Co, Ni, Cu, Zn, Ru, Rh, Pd, Cd, Os, Ir, and Pt, and the bidentate organic ligands being compounds shown by a formula (I-1a), and formed so that the group derived from the polyhydroxy compound is oriented toward an inner space of the hollow shell, wherein D is at least one linking group selected from the group consisting of —O—, —C(═O)— and —(CH 2 ) S —, where s is an integer from 1 to 20, E represents a group derived from a polyhydroxy compound by removal of a hydroxyl group and replaced with an —O— group which is attached to the linking group D, wherein said polyhydroxy compound is selected from the group consisting of a glycol, a glycol compound, a sugar, and a group derived form a polyhydroxy compound selected from the group consisting of a glycol, a glycerol compound and a sugar which have some or all of their hydrogen atoms replaced with a group selected from the group consisting of an alkyl group, a substituted or unsubstituted phenyl group, and an acyl group.