نتایج جستجو برای: br2
تعداد نتایج: 493 فیلتر نتایج به سال:
A template-directed synthetic approach to halogen-bridged mixed-valence platinum complexes has been performed in organic media using, for instance, a synthetic peptide bearing two bis(ethylenediamine)-based Pt(IV) complexes with two axial bromide anionic ligands, [(Pt(IV)Br2(en))2](RSO3)4, and a [Pt(II)(en)2](RSO3)2 complex (R = (C12H25OCH2)2CHO(CH2)3-).
The behavior of n-Si(111) photoanodes covered by monolayer sheets of fluorinated graphene (F-Gr) was investigated under a range of chemical and electrochemical conditions. The electrochemical behavior of n-Si/F-Gr and np(+)-Si/F-Gr photoanodes was compared to hydride-terminated n-Si (n-Si-H) and np(+)-Si-H electrodes in contact with aqueous Fe(CN)6(3-/4-) and Br2/HBr electrolytes as well as in ...
This study evaluated leachate recirculation (LR) as a stabilisation strategy for landfills using bioreactor experiments with excavated waste from tropical landfill in Colombia. The experimental evaluation was performed two 115 L bioreactors, one simulating the operation of LR, Br2, where produced recirculated at rate 0.8 d−1, and control system without Br1. Both systems reached indicator values...
در این پروژه، یک روش جدید سبز برای سنتز سولفیدهای متقارن از هالیدهای مربوطه و سدیم تیوسولفات در آب معرفی شده است. با استفاده از این روش، یک بنزیل دمای ?c 65 یا آلیل هالید در دمای اتاق با بازده بالا بطور موثر به بنزیل یا آلیل سولفید تبدیل شد. همچنین یک روش کارآمد برای کاهش سولفوکسیدها با استفاده از nahso3 در حضور کاتالیزورهای جدید i2، br2 و nbs در دمای اتاق به ترتیب در حلال های کلروفرم، ...
The phage adsorption ability and serological specificity of different Salmonella strains having either complete or leaky mutations in their lipopolysaccharide (LPS) synthesis were compared, together with their genotype and sugar composition, to provide a set of standards relating these parameters to LPS structure. Strains that had T1-specific side chains in their LPS, both with or without O sid...
Two new octa-coordinated ternary europium(III) complexes of the type [Eu(btfa)3(Br2-bpy)] (Eu-1) and [Eu(btfa)3(PhE2-bpy)] (Eu-2) (where btfa = 4,4,4-trifluoro-1-phenyl-1,3-butanedione, Br2-bpy 5,5?-dibromo-2,2?-bipyridine, PhE2-bpy 5,5?-bis(phenylethynyl)-2,2?-bipyridine) together with a previously reported complex [Eu(btfa)3(bpy)] (Eu-3) have been synthesized. The characterized by analytical ...
A facile, efficient, simple, environmentally safe, regioselective, controllable and economical method for the oxybromination of aromatic compounds using NH4Br-Br2 system. The electrophilic substitution of bromine generated in situ from NH4Br as a bromine source and molecular bromine as an oxidant.
All electron ab initio calculations for the interaction of H2O with Cl2 and Br2 are reported for the ground state and the lowest triplet and singlet Pi excited states as a function of both the X-X and O-X bond lengths (X = Cl or Br). For the ground state and lowest triplet state, the calculations are performed with the coupled cluster singles, doubles, and perturbative triple excitation level o...
In this work, the possibility of using reactions electrogenerated titrants with phenolic compounds was studied and a method for their coulometric determination in medicaments by galvanostatic coulometry developed. The research objects were: rutin, salicylic acid drugs containing such as «Ascorutin», «Salicylic Paste» Ointment» Russian manufacture. Electrogenerated halogens (Cl2, Br2 I2) hexacya...
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