نتایج جستجو برای: tetrazole
تعداد نتایج: 701 فیلتر نتایج به سال:
Nitrogen rich compounds are suitable as ingredients in low smoke propellant charges. Several high-N energetic materials are presented which are based on tetrazoles. Tetrazoles are an unique class of compounds, since they combine a high nitrogen content and a high heat of formation with good thermal and kinetic stabilities due to their aromatic ring system. The reaction of 5azidotetrazole with h...
Energetic materials (explosives, propellants, and pyrotechnics) are used extensively for both civilian and military applications and the development of such materials, particularly in the case of energetic salts, is subject to continuous research efforts all over the world. This Review concerns recent advances in the syntheses, properties, and potential applications of ionic salts based on tetr...
The inhibition of insulin-regulated aminopeptidase (IRAP, EC 3.4.11.3) by angiotenesin IV is known to improve memory and learning in rats. Screening 10 500 low-molecular-weight compounds in an enzyme inhibition assay with IRAP from Chinese Hamster Ovary (CHO) cells provided an arylsulfonamide (N-(3-(1H-tetrazol-5-yl)phenyl)-4-bromo-5-chlorothiophene-2-sulfonamide), comprising a tetrazole in the...
A readily accessible iridium(iii) phenyl-tetrazole complex ([Ir(ptrz)2(tBu-bpy)]+, 2; Hptrz = 2-methyl-5-phenyl-tetrazole; tBu-bpy = 4,4'-di-tert-butyl-2,2'-bipyridine) is shown to be a versatile catalyst for a new photocatalytic Michael reaction. Under light irradiation in the presence of 2, a dithiane 2-carboxylic acid, obtained by simple hydrolysis of a commercially available ethyl ester, ge...
We report the direct observation of a bent geometry for a nonstabilized nitrile imine in a metal-coordination crystal. The photoinduced tetrazole ring rupture to release N(2) appears to depend on the size of voids around the N(3)-N(4) bond in the crystal lattice. We further observed the selective formation of the 1,3-addition product when a reactive nitrile imine was photogenerated in water. Ov...
پایان نامه حاضر متشکل از 5 بخش می باشد: در بخش اول، سنتز و شناسایی لیگاند 5-phenyl-1h-tetrazole و همین طور سنتز و شناسایی 6 کمپلکس از این لیگاند با فلز rucl3 و لیگاند های کمکی 1,10-phenanthroline 2,2?-bipyridine, bathophenanthroline, kscn شرح داده شده است. خواص فلورسانس (pl) و الکترولومینسانس (el) این کمپلکس ها برای استفاده در دیود های نور گسیل آلی (oled) ، مورد مطالعه قرار گرفت. علی رغم نشر قر...
The combination of 1-hydroxy-tetrazole and 1-hydroxy-1,2,4-triazole produces a new bisheterocyclic moiety, which is characterized derivatized extensively. We tried to combine the positive advantages TKX-50 MAD-X1 backbone with this building block.
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