Polyhedraltransition metal complex, transition metal complex containing ultrafine particles therein, and process for producing same

摘要

Provided is a polyhedral transition metal complex including a hollow shell, the hollow shell including n1 (where n1 is an integer from 6 to 60) transition metal atoms and 2(n1) bidentate organic ligands, the bidentate organic ligands including a group derived from a polyhydroxy compound via a linking group, and formed so that the group derived from the polyhydroxy compound is oriented toward an inner space of the hollow shell. Also provided are: an ultrafine particle-containing transition metal complex including the polyhedral transition metal complex, and ultrafine particles of a metal oxide, the ultrafine particles being included within the hollow shell of the polyhedral transition metal complex; a method of producing the same. The invention thus provides a polyhedral transition metal complex that makes it possible to efficiently produce metal oxide particles having a uniform particle size of several nanometers, an ultrafine particle-containing polyhedral transition metal complex in which metal oxide particles are included within a polyhedral structure and the method of producing the same.

主权项

1. 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 —(CH2)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.