TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The colloidal metal comprises many iridium atoms and brominating agent brominates at least one iridium atom. The colloidal metal bromide comprises iridium. The iridium is bound to a single bromide ligand.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The calixarene-related compound is substituted phenyl compounds of formula (I). The linker is phosphine of formula (Y1-P(Y2)(Y3)) or carbene, which is an alkyl (preferably methyl) substituted by an imidazolium moiety. The coordinating atom is phosphorus, carbon, nitrogen or oxygen. The many iridium atoms is in the form of Irx. The metal colloid is substituted with carbonyl. The calixarene-related compound is coordinated to the metal colloid. The metal colloid is coordinated to one or many calixarene-related compound. The complex is immobilized on a substrate. The calixarene-related compound or the metal colloid is directly bound to the substrate. The calixarene-related compound is calixarene phosphine, calixarene phosphinite, calixarene phosphonite, calixarene phosphite or calixarene phosphoramidite, calixarene carbene, calixarene, pyridine, calixarene bipyridine, calixarene terpyridine, calixarene pyrazole, calixarene phenanthroline, calixarene isonitrile, calixarene amide, calixarene amine, calixarene amine oxide, calixarene nitroso, calixarene nitro, calixarene carbamate, calixarene carboxylate, calixarene alkoxide, calixarene peroxo, calixarene phenoxide, calixarene ester, calixarene ether, calixarene acetylacetonate or calixarene carbonate. The organic molecule is alkyl (optionally substituted).R1 = (hetero)alkyl or (hetero)aryl (both optionally substituted) or linker ((hetero)alkyl, (hetero)aryl (both optionally substituted) or phosphine, where the linker is optionally substituted with alcohol, sulfonic acid, phosphine, phenyl, imidazolium, carbene, phosphonate, phosphonic acid, phosphine oxide, thiol, sulfoxide, ketone, aldehyde, ester, ether, amine, quaternary ammonium, phosphonium, imine, amide, imide, imido, nitro, carboxylic acid, disulfide, carbonate, isocyanate, carbodiimide, carboalkoxy, carbamate, acetal, ketal, boronate, cyanohydrin, hydrazone, oxime, oxazole, oxazoline, oxalane, hydrazide, enamine, sulfone, sulfide, sulfenyl and/or halo), preferably propyl;n = 3-16, preferably 4;R2 = alkyl or (hetero)aryl (both optionally substituted), H, alcohol, sulfonic acid, phosphine, carbene, phosphonate, phosphonic acid, phosphine oxide, thiol, sulfoxide, ketone, aldehyde, ester, ether, amine, quaternary ammonium, phosphonium, imine, amide, imide, imido, nitro, carboxylic acid, disulfide, carbonate, isocyanate, carbodiimide, carboalkoxy, carbamate, acetal, ketal, boronate, cyanohydrin, hydrazone, oxime, oxazole, oxazoline, oxalane, hydrazide, enamine, sulfone, sulfide, sulfenyl and/or halo, preferably tert-butyl;Y1 = (hetero)alkyl or (hetero)aryl (both optionally substituted) or bond, preferably methyl;Y2, Y3 = (hetero)alkyl or (hetero)aryl (both optionally substituted), preferably phenyl; andx = 2-18, preferably 4.provided that at least one R1 is the linker. Preferred Process: The process of synthesizing calixarene-bound metal colloid, further comprises prior to the contacting step, activating a colloidal metal with a brominating agent under conditions to form the colloidal metal bromide. In the catalytic process-1, the reducing step comprises hydrogenation. In the catalytic process-2, the oxidizing step comprises hydroxylation. EXAMPLE - Tert-butyl-calix(4)arene-di(oxopropyl)-di(methyleneoxy-diphenylphosphine) (0.09 g) and (tetra-iridium(undecacarbonyl)bromide)(N-tert-butyl) (0.225 g) were stirred in dichloromethane (25 ml) at room temperature overnight. The product was isolated by evaporating the solvent by extraction with hexane and purified to give tert-butyl calix(4)-arene-di(propoxy)-bis(diphenylphosphine-methyleneoxy)-bis(tetra-iridium undecacarbonyl).