TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The node comprises four or five zinc ions.The linker species links adjacent nodes.The linker species is a lithium ion. The linker species is a polycarboxylate.The node is a node of formulae (C) of ((RZn)4(NR1R2-NR3)4), ((RZn)4(OH)(NR1R2-NR3)3), ((RZn)4(OH)2(NR1R2-NR3)2), ((RZn)3(ClZn)(OH)(NR1R2-NR3)3) and ((RZn4)Zn(L-c)6). The node is of formulae (IV), (V) and (VI).The node is of formula ((RZn)4(Q)4) (D). In formula (C),R = a halogenated hydrocarbyl;R1, R2, R3 = H or optionally substituted hydrocarbyl (preferred); andL-c = optionally substituted benzoic acid, which may be in free form or carboxylate form.In formula (IV)-(VI),Either R = monodenate ligand; orat least one R in each of formula (IV-V) = halide or halogenated species; andR1a = alkyl or aryl.In formula (D),R = halogenated aryl and aryl having one or more halogenated hydrocarbyl substituents; andQ = a ligand of the formula (B).Preferred Process: The hydrogen is contacted with the material at a pressure of at least 5 bar, preferably at least 10 bars.Preferred Composition: The material has a structure of formula ((ZnRa)4(NR1R2-NR3)3(OLi))2 (E).In the material, at least one of the linking ligands in the node is a substituted hydrazide ligand or a carboxylate ligand.In formula (E),Ra = a monodenate ligand comprising halide and an optionally substituted hydrocarbon; orR1-R3 = H, and an optionally substituted hydrocarbyl (preferred).    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The halogenated species is a hydrocarbon group substituted with one or more halogens.The hydrocarbon group is a halogenated aryl and aryl having one or more halogenated hydrocarbon substituents.The halogenated species is a species of formulae (a)-(g).In the material, at least one of the linking ligands in the node is a substituted hydrazide ligand or a carboxylate ligand.The substituted hydrazide ligand is a ligand of formula (NR1R2-NR3) (A).The carboxylate ligand is ligand having a carboxylate group and an amine group. The carboxylate ligand is a ligand of formula (R4-C(NH2)(R5)(CO2-)) (B). In formulae (a)-(g),n, m = 1-5;Z1 = toluene compound of formula (h); andF3, F4, F5 = three, four or five fluorines, which are attached to a ring.In formula (A),R1, R2, R3 = H, or optionally substituted hydrocarbyl (preferred).In formula (B),R4, R5 = H and optionally substituted hydrocarbyl, preferably optionally substituted aryl. EXAMPLE - Methyl phenyl hydrazine (MePhNNH2) (0.96 ml, 8.19 mmole), pentafluoro phenyl lithium (LiC6F5) (2.85 g, 16.38 mmole) and zinc chloride (1.11 g, 8.14 mmole) were stirred in diethylether for 12 hours. The residue was extracted into acetonitrile (20 ml) and prolonged standing at 0 degrees C the product to give 6-(2-bromo-4,5-difluoro-3,6-bis(2,3,4,5,6-pentahydroxyphenyl)phenyl)benzene-1,2,3,4,5-pentol.