TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Composition: When defective structure site contains one-defective structure site, heteroatom(s) is chosen from phosphorus, silicon, germanium, arsenic and zinc, and metal atom(s) is chosen from lanthanum, cerium, yttrium, titanium, zirconium, hafnium, vanadium, niobium, chromium, manganese, rhenium, iron, ruthenium, rhodium, iridium, nickel, palladium, platinum, copper, silver, gold, zinc, aluminum, gallium, cadmium, indium, tin, lead and bismuth. When defective structure site contains two-defective structure site or three-defective structure site, heteroatom(s) is chosen from phosphorus, silicon, germanium, arsenic, antimony and zinc, and metal atom(s) is chosen from cobalt, lanthanum, cerium, yttrium, titanium, zirconium, hafnium, vanadium, niobium, chromium, manganese, rhenium, iron, ruthenium, rhodium, iridium, nickel, palladium, platinum, copper, silver, gold, zinc, aluminum, gallium, cadmium, indium, tin, lead and bismuth.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Composition: The metallic compound contains metal atom different from heteroatom and polyatom. At least one of defective structure site is chosen from one-defective structure site, two-defective structure site and three-defective structure site. The defective structure site has structure in which polyatom is coordinated through oxygen atom with respect to heteroatom. The metallic compound has structure in which metal atom(s) is coordinated through one oxygen atom and one polyatom per structure site derived from heteropolyoxo metalate compound, metal atom(s) is coordinated to 2 or more oxygen atoms which is not coordinated to heteroatom(s) and polyatom(s), and oxygen atom(s) is coordinated with two metal atoms of same element, and 2 or less structures including structure in which two metal atoms are coordinated to two metal atoms through one oxygen atom, structure in which metal atoms are coordinated through 2 or less other atoms, structure in which four metal atoms are mutually and directly bonded with 2 or less other metal atoms, structure in which metal atom(s) is coordinated through one polyatom and one oxygen atom, and/or structure in which 2 or less oxygen atoms coordinated to metal atom is coordinated to other atom(s) other than metal atom. The heteropolyoxo metalate compound is Keggin-type heteropolyoxo metalate compound, ( alpha )-component, ( beta )- component and ( gamma )-component.