- Triphenylphosphine-supported synthesis of two-dimensional silver(I) complex with (1,3,4-thiadiazole-2,5-diyldithio)diacetic acid
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The reaction of dicarboxylate ligand, (1,3,4-thiadiazole-2,5-diyldithio)diacetic acid (H2tdza) with silver(I) acetate and triphenylphosphine (PPh3) facilitate the formation of complex [Ag2(tdza)(PPh3)2]n(1). The complex was characterized by elemental analysis, FT-IR spectroscopy,1H-NMR,13C-NMR and31P-NMR spectroscopy, and single crystal X-ray diffraction. Structural analysis revealed that complex 1 has a 2D topologically promising architecture as a result from the formation of 26-membered cyclic ring. The tdza2?ligand in 1 displays unprecedented μ4-bridging mode which is also the first example for this ligand. The interdigitating arrangement and π-π stacking between 2D arrays stabilized the formation of complex 1.
- Subri, Noor H. A.,Haziz, Umie F. M.,Razali, Mohd. R.
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- 5-Mercapto-1,3,4-thiadiazole-2(3H)-thione: Synthesis and structure of alkylated derivatives
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The observed structure of 1,3,4-thiadiazolidine-2,5-dithione (also known as 2,5-dimercapto-1,3,4-thiadiazole) has been previously reported in three different tautomeric forms including - dithiol and - dithione. This report examines the relative stability of each form and also reports synthesis and characterization of the structures of mono-alkylated and di-alkylated forms of 5-mercapto-1,3,4-thiadiazole-2(3H)-thione. The methods of X-ray crystallography, NMR spectroscopy, and ab initio electronic structure calculations were combined to understand the reactivity and structure of each compound.
- Mistry, Jigar K.,Dawes, Richard,Choudhury, Amitava,Van De Mark, Michael R.
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- Application of 2,5-di(substituted formamyl methylthio group)-1,3,4-thiadiazole compound in inhibiting blue-green algae growth
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The invention discloses application of a 2,5-di(substituted formamyl methylthio group)-1,3,4-thiadiazole compound in inhibiting blue-green algae growth, and belongs to the field of agricultural production and environmental protection. The structure of the 2,5-di(substituted formamyl methylthio group)-1,3,4-thiadiazole compound is as shown in a formula I, and R1, R2, R3, R4 and R5 in the formula I each adopt any one radical group of hydrogen or a halogen or an alkyl group or a hydroxyl group or trifluoromethyl or a nitro group. The compound has a good inhibiting effect on blue-green algae fructose-1,6-/sedoheptulose-1,7-biphosphatase; a good inhibiting effect on blue-green algae is achieved, and the compound can serve as the effective component of algicide to be applied to comprehensive treatment of blue-green algae bloom. The compound can be mixed with an allowable carrier in a water body or a diluent to be prepared into various commonly-used dosage forms such as a water mixture, an emulsion, an aqueous solution and a mobile agent to serve as the algicide for use. Please see the formula I in the description.
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Paragraph 0022; 0024; 0025; 0027
(2017/04/13)
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- 1,3-thiazoles and their use as immunomodulators
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Heterocyclic sulfides of the general formula heterocycle-S-R, a process for their preparation and, in particular, their use for immunostimulation, immunorestoration and cytostatic treatment, and pharmaceutical agents, which contain a sulfide of this type, for these indications.
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