TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The capping ligands are selected from Lewis bases; anionic ions; or sulfate, nitrate, halogen, phosphate and/or amine. The metal ion is Mg2+, Ca2+, Sr2+, Ba2+, Sc3+, Y3+, Ti4+, Zr4+, Hf4+, V4+, V3+, V2+, Nb3+, Ta3+, Cr3+, Mo3+, W3+, Mn3+, Mn2+, Re3+, Re2+, Fe3+, Fe2+, Ru3+, Ru2+, Os3+, Os2+, Co3+, C2+, Rh2+, Rh+, Ir2+, Ir+, Ni2+, Ni+, Pd2+, Pd+, Pt2+, Pt+, Cu2+, Cu+, Ag+, Au+, Zn2+, Cd2+, Hg2+, Al3+, Ga3+, In3+, Tl3+, Si4+, Si2+, Ge4+, Ge2+, Sn4+, Sn2+, Pb4+, Pb2+, As5+, As3+, As+, Sb5+, Sb3+, Sb+, Bi5+, Bi3+ or Bi+. The several of metal clusters are of formula Fe3O(CO2)3(SO4)3-.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The multidentate linking ligand is (I), 4,4'-biphenyldicarboxylate (BPDC), tetrahydropyrene-2,7-dicarboxylate (HPDC), 1,3,5-tris(4-carboxyphenyl)benzene (BTB), 4,4-terphenyldicarboxylate (TPDC) or 1,4-benzenedicarboxylate (BDC).When the multidentate linking ligand is BPDC, then (a1) is a compound of formula (NH2(CH3)2)8(Fe12O4(BPDC)6(SO4)12 (pyridine)12).When the multidentate linking ligand is HPDC, then (a1) is a compound of formula (NH2(CH3)2)8(-Fe12O4(HPDC)6(SO4)12(pyridine)12).When the multidentate linking ligand is BTB, then (a1) is a compound of formula (NH2(CH3)2)8(-Fe12O4(BTB6)4(SO4)12(pyridine)12); or when the multidentate linking ligand is TPDC, then (a1) is a compound of formula (NH2(CH3)2)8(-Fe12O4(TPDC6)6(SO4)12(pyridine)12) (IRMOP-53); or when the multidentate linking ligand is BDC, then (a1) is a compound of formula (NH2(CH3)2)8(Fe12O4(BDC6)6(SO4)12(pyridine)12) (IRMOP-50)).(a1) additionally comprises an adsorbed chemical species; and guest species.The adsorbed chemical species is ammonia, carbon dioxide, carbon monoxide, hydrogen, amines, methane, oxygen, argon, nitrogen, argon, organic dyes and/or polycyclic organic molecules.The guest species is organic molecules with a molecular weight less than 100, less than 300, less than 600 or greater than 600 g/mol, organic molecules containing at least one aromatic ring, polycyclic aromatic hydrocarbons or metal complexes having formula MmX'n'.M = metal ion;X' = Group 14 through Group 17 anion;m = 1 - 10;n' = number to charge balance the metal cluster so that the metal cluster has a predetermined electric charge.The solvent comprises a component selected from ammonia, hexane, benzene, toluene, xylene, chlorobenzene, nitrobenzene, naphthalene, thiophene, pyridine, acetone, 1,2-dichloroethane, methylenechloride, tetrahydrofuran, ethanolamine, triethylamine, N,N-dimethyl formamide, N,N-diethyl formamide, methanol, ethanol, propanol, alcohols, dimethylsulfoxide, chloroform, bromoform, dibromomethane, iodoform, diiodomethane, halogenated organic solvents, N,N-dimethylacetamide, N,N-diethylacetamide, 1-methyl-2-pyrrolidinone, amide solvents, methylpyridine, dimethylpyridine and/or diethylethe.The solution additionally comprises a templating agent.The templating agent is alkyl amines and their corresponding alkyl ammonium salts, containing linear, branched, or cyclic 1-20C aliphatic groups; aryl amines and their corresponding aryl ammonium salts having 1 - 5 phenyl rings; alkyl phosphonium salts, containing linear, branched, or cyclic 1-20C aliphatic groups; aryl phosphonium salts, having 1 - 5 phenyl rings; alkyl organic acids and their corresponding salts, containing linear, branched, or cyclic 1-20C aliphatic groups; aryl organic acids and their corresponding salts, having 1 - 5 phenyl rings; aliphatic alcohols, containing linear, branched, or cyclic 1-20C aliphatic groups; aryl alcohols having 1 - 5 phenyl rings; inorganic anions selected from sulfate, nitrate, nitrite, sulfite, bisulfite, phosphate, hydrogen phosphate, dihydrogen phosphate, diphosphate, triphosphate, phosphite, chloride, chlorate, bromide, bromate, iodide, iodate, carbonate, bicarbonate, O2-, diphosphate, sulfide, hydrogen sulfate, selenide, selenate, hydrogen selenate, telluride, tellurate, hydrogen tellurate, nitride, phosphide, arsenide, arsenate, hydrogen arsenate, dihydrogen arsenate, antimonide, antimonate, hydrogen antimonate, dihydrogen antimonate, fluoride, boride, borate, hydrogen borate, perchlorate, chlorite, hypochlorite, perbromate, bromite, hypobromite, periodate, iodite, hypoiodite, or the corresponding acids and salts of the inorganic anions; or ammonia, carbon dioxide, methane, oxygen, argon, nitrogen, ethylene, hexane, benzene, toluene, xylene, chlorobenzene, nitrobenzene, naphthalene, thiophene, pyridine, acetone, 1,2-dichloroethane, methylenechloride, tetrahydrofuran, ethanolamine, triethylamine, trifluoromethylsulfonic acid, N,N-dimethyl formamide, N,N-diethyl formamide, dimethylsulfoxide, chloroform, bromoform, dibromomethane, iodoform, diiodomethane, halogenated organic solvents, N,N-dimethylacetamide, N,N-diethylacetamide, 1-methyl-2-pyrrolidinone, amide solvents, methylpyridine, dimethylpyridine and/or diethylether.