Assemblies of two methylresorcin[4]arene cavitands with Bu 2 SnO and n-BuSn(O)OH afforded four organooxotin-cluster-based compou nds, namely, [(Bu 2 Sn) 2It is the first time that the methylresorcin[4]arene cavitands were successfully incorporated into the organooxotin clusters. Both 1 and 2 exhibit similar dumbbell-like structures, where the skeletons of methylresorcin[4]arene cavitands stretch in different directions on account of the different configurations of the carboxylate groups of L1 and L2 anions. As a result, the C−H•••π interactions lead to slightly distinct 1D supramolecular architectures of 1 and 2. 3 displays a sandwich-like structure based on one [(BuSn) 12 (μ 3 -O) 14 (μ 2 -OH) 6 ] 2+ macrocation and two L1 anions, where the macrocation is trapped in the dimeric L1 anions through O−H•••O hydrogen-bonding interactions. The sandwiches further stack through π−π interactions to afford a supramolecular dimer. 4 exhibits an unusual giant paddle-wheel motif composed of a typical Sn 6 O 6 drum and six L2 anions. Further, the paddle-wheel motifs are extended by π−π interactions to give a supramolecular layer. Moreover, the luminescent properties of 2 and 4 and the preliminary anticancer activity of 4 were also investigated.

A series of coordination polymers based on Ag⋯Ag interactions, namely, [Ag 2 (hpyb) 0.5 (L1) 0.5 (NO 3 benzenetetracarboxylic acid, H 3 L7 = 1,2,4-benzenetricarboxylic acid and H 4 L8 = 4,4′-oxydiphthalic acid) has been synthesized. For compounds 1-4, the polycarboxylate anions bridge multinuclear Ag(I) units to form 1D chains, respectively. The chains are extended by π-π interactions into a 2D supramolecular layer for compound 3 and 3D supramolecular architectures for compounds 1, 2 and 4. Compound 5 displays a 3D (4,8)-connected (3 4 •4 2 )(3 4 •4 12 •5 8 •6 4 ) 2 framework. Compounds 6-8 exhibit 2D layers, where the layers of 6 and 8 are further linked by π-π interactions to yield 3D supramolecular architectures. In the solid state, compounds 1-8 exhibit strong fluorescence emission bands at room temperature.