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With different transition metal (TM) complexes as structure-directing agents or structure-building units, a series of new mercury thioantimonates with abundant architectures ranging from one-dimensional (1D) ribbons to two-dimensional (2D) layers have been solvothermally synthesized and structurally characterized. Compounds [Co(en)3]Hg2Sb2S6 (1) (en = ethylenediamine) and [Ni(1,2-dap)3]2­HgSb3S7Cl (2, 1,2-dap = 1,2-diaminopropane) contain a discrete 2D [Hg2Sb2S6] n 2n– layer and 1D [HgSb3S7] n 3n– chain, respectively. Compounds [Ni(1,2-dap)3]­HgSb2S5 (3) and [Mn(dien)2]­HgSb2S5 (4, dien = diethylenetriamine) feature distinct 2D [HgSb2S5] n 2n– layer and 1D [HgSb2S5] n 2n– ribbon, respectively, whereas the 1D [HgSb2S5] n 2n– chains are attached by [TM(tren)]2+ complexes via TM–S bonds to form 1D {[TM(tren)]HgSb2S5} n ribbons in compounds [TM(tren)]­HgSb2S5 (TM = Mn (5), Fe (6), Co (7), tren = tris(2-aminoethyl)amine). Compounds [TM(dien)2]Hg3Sb4S10 (TM = Mn (8), Co(9), Ni(10)) feature 2D [Hg3Sb4S10] n 2n– anionic layers separated by [TM(dien)2]2+ cations. The most interesting structural feature of these compounds is the presence of three different types of coordination environments of Hg centers including linear [HgS2] unit, [HgS3] triangle, and [HgS4] tetrahedron. The optical properties and thermal stabilities of the title compounds were studied by UV–vis spectra and thernogravimetric analyses, respectively. The photocatalytic experiments indicated that 3, 4, and 10 were able to degrade rhodamine B (RhB) under visible irradiation.

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We describe a nonenzymatic electrochemical sensor for uric acid. It is based on a carbon nanotube ionic-liquid paste electrode modified with poly(β-cyclodextrin) that was prepared in-situ by electropolymerization. The functionalized multi-walled carbon nanotubes and the surface morphology of the modified electrodes were characterized by transmission electronic microscopy and scanning electron microscopy. The electrochemical response of uric acid was studied by cyclic voltammetry and linear sweep voltammetry. The effects of scan rate, pH value, electropolymerization cycles and accumulation time were also studied. Under optimized experimental conditions and at a working voltage of 500 mV vs. Ag/ AgCl (3 M KCl), response to uric acid is linear in the 0.6 to 400 μΜ and in the 0.4 to 1 mΜ concentration ranges, and the detection limit is 0.3 μΜ (at an S/N of 3). The electrode was successfully applied to the detection of uric acid in (spiked) human urine samples.

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Two new isostructural quaternary tin(IV) antimony(III) sulfides, [TM(en)3]­[SnSb4S9] [TM = Ni (1), Co (2); en = ethylenediamine], and one mixed-valent thioantimonate (III and V), [Mn­(dien)2]2­Sb4S9 (3, dien = diethylenetriamine), have been solvothermally synthesized and structurally characterized. In the structures of 1 and 2, four neighboring SbS3 trigonal pyramids are condensed via corner-sharing to form bow-like Sb4S9 tetramers, which are further interconnected by SnS6 octahedra into the three-dimensional (3D) chiral [SnSb4S9]2– framework with two types of one-dimensional (1D) chiral channels along the c axis. Compound 3 features a 3D network composed of 1D anionic [Sb4S9]4– chains and [Mn­(dien)2]2+ complexes interconnected via various hydrogen bonds. The most interesting structural feature of 3 is the presence of two different oxidation states of antimony centers in the 1D [Sb4S9]4– chain with three different types of coordination environments, respectively. The optical absorption spectra indicate that the band gaps of compounds 1, 2, and 3 are 2.07, 2.04, and 2.29 eV, respectively. The thermal stabilities and magnetic properties of the title compounds are also studied.

Three new organic-inorganic hybrid manganese thiogermanates and thiostannates, namely, ijMnIJen) 2 ]MnGeS 4 (1, en = ethylenediamine), ijMnIJdien) 2 ]MnSnS 4 (2, dien = diethylenetriamine) and ijMnIJ1,2dap)] 2 Sn 2 S 6 (3, 1,2-dap = 1,2-diaminopropane), have been solvothermally synthesized and structurally characterized. Compound 1 has a three-dimensional (3D) neutral framework composed of one-dimensional (1D) ijMnGeS 4 ] 2− chains and unsaturated ijMnIJen) 2 ] 2+ cations interconnected via Mn-S bonds, whereas compounds 2-3 feature 1D ijMnSnS 4 ] 2− anionic chains and 1D neutral ijMnIJ1,2-dap)] 2 Sn 2 S 6 chains, respectively.Investigation into the magnetic properties of the title compounds reveals antiferromagnetic and ferromagnetic coupling interactions between the MnIJII) ions for compounds 1 and 3, respectively. The optical and luminescence properties, as well as the thermal stabilities, were also studied. CrystEngCommThis journal is

Two manganese–amine complexes incorporating thioantimonates with diversiform structure-directing actions of the amine ligands have been synthesized and characterized.