Guang-Ju Ping

Structures of metal-organic networks based on flexible 1,1′-(1,4-butanediyl)bis(imidazole-2-phenyl) ligand

A new neutral ligand 1,1′-(1,4-butanediyl)bis(imidazole-2-phenyl) (bbip) and six coordination polymers, namely [Zn(o-bdc)(bbip)]·H2O (1), [Zn(m-bdc)(bbip)]·H2O (2), [Cd(m-bdc)(bbip)] (3), [Zn(OH–bdc)(bbip)] (4), [Cd(OH–bdc)(bbip)] (5) and [Zn(fum)(bbip)]·H2O (6) (where o-H2bdc = 1,2-benzenedicarboxylic acid, m-H2bdc = 1,3-benzenedicarboxylic acid, OH–H2bdc = 5-hyroxyisophthalic acid and H2fum = fumaric acid), are described. Compound 1 shows a one-dimensional double-stranded chain structure. Compounds 2 and 4 possess 2D polymeric layers, and the layers are connected through van der Waals forces and hydrogen bonds into 3D supramolecular structures, respectively. Compounds 3, 5 and 6 exhibit 3-fold interpenetrating diamondoid networks. The luminescent properties for these compounds in the solid state are discussed.

Syntheses and crystal structures of mononuclear, tetranuclear and hexanuclear organotin compounds with derivatives of p -aminobenzoic acid

Four organotin(IV) compounds, [Bu6Sn6O6(L1)6] (1), [Bu6Sn6O6(L2)4(L3)2] (2), [Bu8Sn4O2(L2)4] (3) and [Ph3Sn(L2)] (4), were obtained by reactions of BuSnOH, Bu2SnO and Ph3SnOH with 4-((6-chloropyridin-3-yl)methylamino)benzonic acid (HL1), 4-((pyridin-2-yl)methylamino)benzonic acid (HL2) and p-aminobenzoic acid (HL3). 1 is a hexameric cluster, existing in a drum-like structure with prismatic Sn6O6 core. Compound 2 is a mixed drum, containing two kinds of carboxylic acid anions. Compound 3 possesses a Sn4O4 ladder structure. In 2 and 3, two-dimensional supramolecular structures are formed by the intermolecular hydrogen-bonding interactions. Compound 4 is a monomer with a dimer formed through π–π stacking between adjacent L2 anions. Compounds 1–4 were characterized by elemental analyses and IR spectra.

9‐(Methoxymethyl)anthracene

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