TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preparation (Disclosed): Preparation of (I) comprises combining the requisite hydrated metal salt (e.g. nitrate) and imidazole-type linker in an amide solvent such as N,N-diethylformamide, followed by heating (85-150 degrees C) to give precipitate of (I) after 48-96 hours and isolating it. Preferred Components: (I) comprises: many different transition metals; and many different linking moieties, where at least one linking moiety comprises (a); and many pores, each of the pores comprises a sufficient number of accessible sites for atomic or molecular adsorption. (I) further comprises: a guest species, where the guest species increase the surface area of (I); and an interpenetrating zeolitic frameworks that increases the surface area of the metal-organic framework. The guest species are organic molecules with a molecular weight of less than 100 g/mol, organic molecules with a molecular weight of less than 300 g/mol, organic molecules with a molecular weight of less than 600 g/mol, organic molecules with a molecular weight greater than 600 g/mol, organic molecules containing at least one aromatic ring, polycyclic aromatic hydrocarbons and/or metal complexes of formula (MmXn). The uptake is reversible. The sorbent is comprised of discrete sorptive particles, where the sorptive particles are embedded into or fixed to a solid liquid- and/or gas-permeable three-dimensional support. The sorptive particles have pores for the reversible uptake or storage of liquids or gases and where the sorptive particles can reversibly adsorb or absorb the liquid or gas. The chemical species are in the form of a gas or liquid. The uptake of a chemical species comprises storage of the chemical species. The chemical species is stored under conditions suitable for use as an energy source.M = metal ion;X = group 14 through group 17 anion;m = 1-10; andn = charge balancing the metal cluster so that the metal cluster has a predetermined electric charge. Preferred Definitions:    R1, R4, R9 = electron donor groups (preferably H, methyl, halo, CN or ethyl);    R10-R12 = nitro, CN, fluoro or chloro group;    R6, R7 = halo (preferably Cl), nitrile or carbonyl;    L = imidazolate or an imidazolate derivative, preferably imidazolidine group of formula (d) or (e), 1H-benzoimidazole group of formula (f), 3H-imidazo(4,5-b)pyridine group of formula (g), 3H-imidazo(4,5-c)pyridine group of formula (h) or 7H-purine group of formula (i), substituted imidazolate, benzimidazolate comprising methyl-, nitro-, CN or chloro group, azabenzimidazolate or azabenzimidazolate where 1-2 carbon atoms on the benzimidazolate are replaced by nitrogen; and    M = scandium, titanium, vanadium, chromium, manganese, iron, cobalt, nickel, copper, zinc, yttrium, zirconium, niobium, molybdenum, technetium, ruthenium, rhodium, palladium, silver, cadmium, lutetium, hafnium, tantalum, tungsten, rhenium, osmium, iridium, platinum, gold, mercury, rutherfordium, lawrencium, dubnium, seaborgium, bohrium, hassium, meitnerium, darmstadtium, roentgenium or ununbium.    SPECIFIC COMPOUNDS - 175 Zeolitic framework (I) are specifically claimed e.g. POZ, ABW, ACO, AEI and AEL.    EXAMPLE - A solid mixture of zinc nitrate tetrahydrate (0.04 g) and imidazole (0.03 g) was dissolved in dimethyl formamide (DMF) (3 ml) in a 4 ml vial. The vial was capped and heated at 5 degrees C/minute to 130 degrees C for 48 hours, then cooled at 0.4 degrees C/minute to room temperature and worked up to give Zn(IM)2-(DMF)(H2O) (0.021 g, 47%).