The cover picture shows a section of the crystal structure of the coordination polymer Cu1.5(H3N-(CH2)6-NH3)0.5[C6H2(COO)4]·5H2O(1), which features channel-like voids accommodating hexane-1,6-diammonium cations that compensate for the negative charge of the three-dimensional framework. A space-filling view of the framework is inserted. The compound can be dehydrated to a trihydrate and rehydrated to the starting composition retaining the crystal structure. Cu2(H3N-(CH2)6-NH3)0.5(OH)[C6H2(COO)4]·3H2O (2) has a similar framework structure with channels of different dimensions accommodating hexane-1,6-diammonium cations as well. The different compounds have been obtained from aqueous solution by employing the same method, however, at different temperatures. More details are discussed in the article by R. Köferstein and C. Robl on page 310ff.