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The supramolecular complexes (SC) of the type [Me2SnCl2L], L = 2,2′-bipyridine (2,2′-bpy), SC 1, 4,4′-bipyridine (4,4′-bpy), SC 2, and (1,10-phenanthroline), SC 3, have been synthesized and structurally characterized by elemental analysis, FT-IR, UV–Vis, 1H and 13C NMR spectra and X-ray single crystal. The X-ray data of SC 1 and SC 2 exhibited 1:1 stoichiometry for the dimethyltin dichloride: bipodal ligand. The structure of SC 1 extends along the a-axis in a parallel way forming 1D-chains via H-bonds while they further propagate creating 2D-network via extensive H-bonds. The extending structure of the SC 2 along the a-axis consists of parallel 1D-chains via H-bonds creating the A … A … A fashion. Molecular modeling studies of SC 3 indicated that Sn(IV) center acquires N2C2Cl2 octahedral geometry. The tested compounds SC 1, SC 2 and SC 3 were found to inhibit cell proliferation and induce high percent of apoptotic towards human breast adenocarcinoma (MCF7), liver carcinoma (HEPG2), colorectal carcinoma (HCT-116), cervical carcinoma (HELA) and prostate cancer (PC3) cell lines in vitro model within short times of treatment. The anti-Oxidant and anti-hemolytic assays employ that SC 1 exhibits moderate antioxidant activity as well as the most potent anti-hemolysis activities compared with ascorbic acid. The antimicrobial assessment has been also studied by disc diffusion method.

The supramolecular polymer of the type [Me2SnCl2L], 1, L = 2,2'-bipyridine (2,2'-bpy), has been synthesized by the reaction of dimethyltin (IV) dichloride and 5-nitroisophthallic acid in the presence of sodium ethoxide and 2,2'-bpy. The compound was structurally characterized by elemental analysis, FT-IR spectra and X-ray single crystal. The x-ray data exhibited 1:1 stoichiometry for the dimethyltin dichloride: 2,2'-bpy ligands. The structure of 1 extends along the a-axis in a parallel way forming 1D-chains via H-bonds while they further propagate creating 2D- network via extensive H-bonds. The biological activity against some fungi and bacterial microorganisms has been also studied.

Two new supramolecular coordination polymers namely {[Cd(NA)2(H2O)]}, SCP 1 and {[Pb(NA)2]}, SCP 2, (NA = nicotinate ligand) were synthesized by self–assembly method and structurally characterized by different analytical and spectroscopic methods. Single-crystal X-ray diffraction showed that SCP 1 extend in three dimensions containing bore structure where the 3D- network is constructed via interweaving zigzag chains. The Cd atom coordinates to (O4N2) atoms forming distorted-octahedral configuration. The structure of SCP 2 extend down the projection of the b-axis creating parallel zigzag 1D-chains connected by μ2-O2 atoms and H-bonds forming a holodirected lead (II) hexagonal bi-pyramid configuration. SCP 2 extend to 3D-network via coordinate and hydrogen bonds. The thermal stability, photoluminescence properties, photocatalytic activity for the degradation of methylene blue dye (MB) under UV-irradiation and sunlight irradiation were also studied.

Long chain aliphatic diamine, 1,7-diaminoheptane (DAHP), was selected as template for creation of novel nano-scaled 3D-guest-host- supramolecular coordination polymer (SCP); ∞3[(Cu3(CN)3)2.(DAHP)], 1. Crystal structure of SCP 1 consists of new bi-fold [Cu3(CN)3]2 fragments containing tetrahedral copper(I) atoms which are arranged in unique way to create 3D-structure exhibiting wide cavities enable to encapsulate the long chain DAHP as guest molecule. The topology of 1 had been elucidated by spectroscopic methods, elemental analysis, transmission electron microscopy (TEM) and scanning electron microscope (SEM). The nanosized SCP1 exhibits excellent catalytic activity towards mineralization of methyl violet (MV), methylene blue (MB) and indigo carmine (IC) dyes using H2O2 as oxidant within very short times. Scavenger techniques and disodium terephthalate (NaTA) as selective photoluminescence prob of hydroxyl radical had been utilized to elucidate mineralization mechanism. Nano-SCP 1 exhibits sigmoidal dose-response inhibition of cells viability giving low IC50 values for the tested cell as well as was examined for rate erythrocyte hemolysis and antioxidant activity utilizing ABTS assay. Also, SCP1 exhibits good antimicrobial activity due to the low MIC values keeping it a promising drug candidate for the treatment of the tested bacterial and fungal infections.

Yellow prismatic nanoparticles of the supramolecular coordination polymer (SCP) [Cu6(CN)7(C6H12N4)2(OH3)], 1 were obtained by the reaction of K3[Cu(CN)4] and hexamethylenetetramine (hmt) in presence of Me3SnCl at ambient conditions. The X-ray structure of 1 consists of many rhombic [(Cu)2µ3–(CN)2] motifs which construct eight fused cyclic rings accommodating two hmt ligands. The copper atoms exhibit pseudo-tetrahedral configuration. The cyanide ligands create the bifurcated µ3-CN bridges. The [(Cu)2µ3–(CN)2] motifs causes expansion of the structure of 1 to three dimensions while extensive H-bonds play an essential role in packing structure. SCP 1 was used as an efficient heterogeneous catalyst for oxidative mineralization of acid blue-92 (AB-92), textile dye, with H2O2. The study aimed to investigate the efficiency of recycled the catalyst 1 and the mechanism of degradation of AB-92. The morphological feature of the SCP 1 as a catalyst before and after catalysis was examined by high resolution transmission electron microscope (TEM).

{[Co(CN)6(Me3Sn)3(H2O)].(qox)} host-guest supramolecular coordination polymer, SCP1, is synthesized by adding K3[Co(CN)6], quinoxaline (qox) and Me3SnCl using the self-assembly method at ambient conditions. X-ray diffraction (XRD) of single crystal of SCP1 indicates that the structure consists of [Co(CN)6(H2O)] building blocks which construct the 3D-host network connected by the Me3Sn+ cations and accommodate qox guest molecule. The nanosized particles of {[Co (CN)6(Me3Sn)3(H2O)].(qox)}; SCP1∖ are obtained by sono-chemical method while the morphology was examined by powder X-ray diffraction (PXRD) and transition electron microscopy (TEM). The fluorescence property of SCP1∖ has been examined which exhibits high luminescent selective sensory towards nitrobenzene, Hg+1, Fe3+ and Pb2+ ions. SCP1 and SCP1∖ are tested as heterogeneous catalysts for degradation of phenol under UV- and ultrasonic radiation. The catalysts cause efficient degradation of phenol which was enhanced by radiation. The mechanism of degradation was suggested and discussed in detail.

The syntheses and crystal structures of novel supramolecular coordination polymers (SCPs) of AgCN with bipodal ligands; 4,4′-bipyridine (bpy), trans-1,2-bis(4-pyridyl)ethylene (tbpe) and 1,2-bis(4-pyridyl)ethane (bpe) are reported. The syntheses were affected in H2O/acetonitrile/NH3 media at room temperature. SCP [(AgCN)2 · bpy] (1) is monoclinic and crystallizes in the space group P21/c, a = 9.0565(4) A, b = 16.0063(8) A, c = 9.1361(4) A, β = 110.51° and Z = 4. SCP [(AgCN)3 · (tbpe)2 · H2O] (2) is triclinic and crystallizes in the space group P 1 ¯ , a = 9.8427(4) A, b = 10.3596(4) A, c = 14.0864(6) A, α = 98.873°, β = 101.739°, γ = 95.506° and Z = 2. SCP [(AgCN)4 · bpe] (3) is monoclinic and crystallizes in the space group P21/c, a = 10.1872(5) A, b = 9.1610(5) A, c = 14.4862(6) A, β = 130.00(18)° and Z = 2. The 3D-topolgies of 1–3 resulted from the bridging action of the bipodal ligands and the argentophilic interactions as well as extensive H-bonding and π–π stacking.

Three supramolecular coordination polymers (SCPs) [(AgSCN)2L] {L = 4,4′-bipyridine (bpy) (1), trans-1,2-bis(4-pyridyl)ethylene (tbpe) (2) and phenazine (phenz) (3)} have been synthesized and structurally characterized by single-crystal X-ray diffraction. Synthesis was affected in H2O/acetonitrile/NH3 media at room temperature. The bpy, tbpe and phenz bipodal ligands adopt different conformations which would affect the skeleton of the (AgSCN)n building blocks that allow the interconnection of the (AgSCN)n fragments and propagation of the network structure in three dimensions. Supramolecular interactions such as hydrogen-bonding, argentophilic interaction and π–π stacking play an important role in the assembly of these coordination polymers.