TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The transition metal element contains at least one type selected from yttrium, samarium, titanium , zirconium, hafnium, vanadium , niobium, tantalum, chromium, molybdenum, manganese, rhenium, iron, ruthenium, iridium, cobalt, rhodium, tungsten, nickel, palladium, platinum and osmium. The inorganic base contains at least one group selected from alkali metal hydroxide, alkaline earth metal hydroxide, alkali metal carbonate, alkaline earth metal carbonate, alkali metal hydrogen carbonate, and alkaline earth metal hydrogen carbonate. The phase transfer catalyst contains at least one of ammonium salt and phosphonium salt.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Compound: The organic semiconductor which has structure having compound (1) or its ion is laminated to up-down direction. The organic semiconductor has a crystal structure, or complex structure with a metallic element and a dopant. A compound molecule or its ion which has at least two group derived from compound molecule (1) is 2 or more and which has structure connected to at least one of the covalent bond and contains cross-linked chain which is methylene group or 2-10C polymethylene group. The metallic element contains a transition metal element. The aldehyde or ketone is aromatic aldehyde in which formyl group is directly bonded to aromatic ring. The aromatic ring of the aromatic aldehyde is phenyl, thienyl or oligo thiophene chain (optionally substituted by one or more electron donating group or electron attracting group). The phase transfer catalyst contains approximately 120 compounds such as n-Bu4NBr, n-Bu4NI, Me4NI, Et4NOH, (n-C12H25)4NHSO4 and BnEt3NPF6.Preferred Properties: The benzene ring in sumanene structure and atom directly coupled are made into xI in atom group X1. The benzene ring in sumanene structure and atom directly coupled are made into xII in atom group X2. The benzene ring in sumanene structure and atom directly coupled are made into xIII in atom group X3. When the plane which contains three atoms of xI, xII and xIII is defined as x surface, it is mutually parallel in x surface of each molecule or ion in laminated structure of the ion or its ion. When the triangle which makes a vertex three atoms of xI, xII and xIII in compound (1) or its ion is defined, the triangle in inside of arbitrary molecule or ion is positioned at an angle of 60plus minus10degrees, 180plus minus10degrees or 300plus minus10degrees rotated at x surface to the triangle of the molecule or ion currently laminated by contacting top or bottom. The organic semiconductor is thin film like shape.Preferred Method: After dissolving the compound (1) and tautomer, its stereoisomer, and their salts, in solvent, solidification is performed. The compound, its tautomer, its stereoisomer, and their salts, is formed in a shape of thin film. The thin film is formed by vapor deposition method, chemical vapor deposition, spin coat method and printing method. Preferred Definitions:    A1-A6=H;and    X1-X3=methylene, vinylidene, imino and/or oxygen atom, preferably methylene group.    When benzyl position hydrogen atom exists on A1-A6, the hydrogen atom is optionally substituted by substituent, which is halogen, linear or branched low molecular or polymer chain, carbocyclic ring or heterocyclic ring with ring atom number of 3-20, (un)saturated hydrocarbon, hydroxyl, linear or branched alkyl, linear or branched alkoxy, linear or branched alkanoyloxy, amino, oxy amino, linear or branched alkyl amino, linear or branched dialkyl amino, linear or branched alkanoyl amino, cyano, nitro, sulfo, linear or branched alkyl substituted with one or more halogen, linear or branched alkoxysulfonyl (alkyl optionally substituted by one or more halogen), linear or branched alkylsulfonyl (alkyl optionally substituted by one or more halogen), sulfamoyl, linear or branched alkyl sulfamoyl, carboxyl, carbamoyl, linear or branched alkyl carbamoyl, linear or branched alkanoyl, or linear or branched alkoxycarbonyl, or substituent bonded to same Ar (r=1-6) bond through a covalent bond and optionally forms a carbocyclic ring or heterocyclic ring. When the hydrogen atom exists on X1-X3, it is optionally substituted by substituent which is halogen, linear or branched low molecular or polymer chain, carbocyclic ring or heterocyclic ring having ring carbon number of 3-20, linear or branched alkyl, linear or branched (un)saturated hydrocarbon, hydroxyl, linear or branched alkoxy, linear or branched alkanoyloxy, amino, oxy amino, linear or branched alkyl amino, linear or branched dialkyl amino, linear or branched alkanoyl amino, cyano, nitro, sulfo, linear or branched alkyl substituted with one or more halogen, linear or branched alkoxysulfonyl (alkyl optionally substituted by one or more halogen), linear or branched alkylsulfonyl(alkyl optionally substituted by one or more halogen), sulfamoyl, linear or branched alkyl sulfamoyl, carboxyl, carbamoyl, linear or branched alkyl carbamoyl, linear or branched alkanoyl, or linear or branched alkoxycarbonyl, or substituent bonded to same Xa (a=1-3) bond through a covalent bond and optionally forms a carbocyclic ring or heterocyclic ring. The substituent on A1-A6 is H, linear or branched 1-6C alkyl, phenyl or naphthyl. When benzyl position hydrogen atom exists on A1-A6, the hydrogen atom is optionally substituted by substituent chosen from cyclic substituent, which has structure excluding arbitrary one hydrogen from 64 claimed compounds such as cyclopentane, benzene, naphthalene, cyclobutane and cyclohexane. The substituents are halogen, methyl, hydroxyl, methoxy, oxo and/or amino group. The conjugated polymer chain or oligomer chain in A1-A6 is at least one group selected from optionally substituted polyphenylene, oligo phenylene, polyphenylene vinylene, oligo phenylene vinylene, polyene, oligo vinylene, polyacetylene, oligo acetylene, polypyrrole, oligo pyrrole, polythiophene, oligo thiophene, polyaniline and oligo aniline, with formula weight of 30-30000.    SPECIFIC COMPOUNDS - 9 sumanene compounds of formula (1) are claimed, such as sumanene compound is of formula (101).    EXAMPLE - Sumanene (in mg) (5) and n-tetrabutyl ammonium bromide (n-Bu4NBr as phase transfer catalyst) (6) were added into a 5 ml two openings round bottom flask. After vacuum drying argon substitution was performed, 30 wt.% sodium hydroxide aqueous solution (1 ml) and tetrahydro furan (0.1 ml) previously deaerated by argon bubbling were added. Then benzaldehyde (0.085 mmol) was added and stirred at room temperature for 2 hours. Ether was added after reaction completion, and the product was washed with deionized water, and extracted with saturated ammonium chloride aqueous solution and saturated salt solution. The obtained organic layer was concentrated, dried and purified by column chromatography, and sumanene compound of formula (101) (8) was obtained as yellow solid with yield of 79%. An organic semiconductor was formed using the obtained compound, and had favorable spectroscopic characteristic and electron mobility.