Molecular materials for gases storage, sieving and purification purposes are of current interest, especially if they can be produced from readily available starting materials and by trouble-free wet chemistry methods. One main design criterion is to facilitate the production of cavities with welldefined dimensions, so that molecular species can be trapped or even size excluded. The so-called Metal Organic Frameworks (MOFs) are prominent examples of materials for which much effort has been put into creating supramolecular structures, comprising metal ions which act to cement together the organic building blocks.  The synthesis of a new Zinc(II) cage-like structure based on 1,4-bis((1Himidazoyl-1-yl)methyl)benzene (BIB) and 5-sulfoisophthalic acid (SIP) is presented herein. The guest-containing material was characterized by IR spectroscopy, elemental and thermogravimetric analyses.  The FT-IR spectrum for the isolated solid displayed a strong band at 1357 cm-1 (S=O stretch), which confirmed the presence of the 5-sulfoisophthalate anion. The strong absorption at 1612 cm-1 is again in line with the carboxylate group. The very broad band at ca. 3379 cm-1 is not especially diagnostic for determining disparate water binding modes in the sample. X-ray analysis of single crystals afforded a clearer picture of the molecular structure. The structure of the compound contains two zinc(II) ions; one zinc(II) is four coordinate and approximately tetrahedral, whereas the second zinc(II) is five coordinate and based on a trigonal bipyramid. The two zinc(II) ions are connected by a µ2-hydroxyl unit and a µ2-carboxylate unit. Two of the central di-zinc(II) motifs are coupled together by the bridging 5sulfoisophthalate subunit and this feature extends along the a-axis. The 1,4bis((1H-imidazoyl-1-yl)methyl)benzene act like pillars to connect the rows of zinc(II) ions as viewed down the c-axis.The cavity formed supports inclusion of water molecules and the water channel extends in one dimension through the structure (Fig.). The water molecules can be removed on heating to 140°C without disrupting the framework.       N2-uptake adsorption studies reveal the pore volume is 1.8 x 10-2 cm3 g-1 with a total surface area of 51.2 m2 g-1.