TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preparation (claimed): The metal-organic framework is prepared by heating the solvated metal-organic framework in vacuum at 80-120, 140-200 or 150-160 degrees C for 15-20, 20-30 or 3-5 hours, respectively. Preferred Components: The metal-organic framework is preferably of formula (Zn2(ABTC)(DMF)2)3n, (Cu2(ABTC)(H2O)2)3n6n(1,4-dioxane)10nDMF, (Cu2(ABTC))n, (Cu2(ABTC)(H2O)2)3n6n(1,4-dioxane)10nDMF, or (Cu2(ABTC)(DMF)2)3n. The (Cu2(ABTC)(H2O)2)3n6n(1,4-dioxane)10nDMF is used for storage of hydrogen gas at 0.01-10 bar. The gas is nitrogen gas, carbon dioxide, methane, and/or hydrogen gas. Preferred Properties: The metal-organic framework of formula (Zn2(ABTC)(DMF)2)3n has Langmuir surface area of 1400-1500 m2/g, pore size of 12-13 Angstrom determined from nitrogen gas adsorption isothermal line, hydrogen adsorption of greater than or equal to 2 pts. wt at 77K and 1 atm, and Dubinin-Radushkevich pore volume of 0.5-0.6 cm3/g. The metal-organic framework of formula (Cu2(ABTC)(DMF)2)3n has Langmuir surface area of 1200-1300 m2/g, Dubinin-Radushkevich pore volume of 0.4-0.5 cm3/g, Brunauer Emmett Teller (BET) surface area of 1200-1350 m2/g, pore size of 10.5-11 Angstrom determined from nitrogen gas adsorption isothermal line, hydrogen adsorption of greater than or equal to 1.8 pts. wt at 77K and 1 atm. The metal-organic framework of (Cu2(ABTC))n has Langmuir surface area of 2800-2900 m2/g, pore size of 12-13 Angstrom determined from nitrogen gas adsorption isothermal line, hydrogen adsorption of greater than or equal to 2.8 pts. wt at 77K and 1 atm, and Dubinin-Radushkevich pore volume of 0.5-1.5 cm3/g. EXAMPLE - 1,1'-Azobenzene-3,3',5,5'-tetracarboxylic acid-dimethyl formamide (DMF) solution (0.065 g) was dissolved in the mixture of DMF and 1,4-dioxane (6 ml) at 1:1 volume by volume ratio. The solution was mixed with aqueous solution (2 ml) of copper nitrate hydrate (0.040 g). The aqueous nitric acid (61%) was added at 3-4 drops until the yellow-greenish turbid solution became clear. The solution mixture was placed in Teflon vessel within the autoclave and heated at 80 degrees C for 24 hours. The solution was cooled to room temperature which resulted in green block-shaped crystals. The crystals were filtered off and washed with mother liquor. The solution was ascertained that the solid was insoluble in any common organic solvents and water.