نتایج جستجو برای: toluene diamine
تعداد نتایج: 12337 فیلتر نتایج به سال:
In the title cobalt(II) compound, [Co(C(12)H(21)N(2)Si)Cl(C(6)H(16)N(2))], the ethane-1,2-diamine donor mol-ecule coordin-ates the metal atom in an N,N'-chelating mode, with Co-N distances of 2.136 (2) and 2.140 (3) Å. An anilide ligand connects to the Co(II) atom with a σ-bond, the Co-N(anilide) distance being 1.931 (2) Å. The four-coordinate Co(II) atom demonstrates a slightly distorted tetra...
The asymmetric unit of the title compound, C(16)H(12)Cl(4)N(2)O(2), comprises half of a potentially tetra-dentate Schiff base ligand, located about a twofold rotation axis which bis-ects the central C-C bond of the ethane-1,2-diamine group. In the solid state, the compound exists in the zwitterionic form. There are two intra-molecular N-H⋯O hydrogen bonds making S(6) ring motifs. In the crystal...
Treating 1,5-difluoro-2,4-dinitrobenzene (1) with N1-phenyl-5-(trifluoromethyl)benzene-1,2diamine (4) and N,N-diisopropylethylamine in EtOH at ca. 0 ◦C for 4 h affords a mixture of N1-(5-ethoxy-2,4-dinitrophenyl)-N2-phenyl-4-(trifluoromethyl)benzene-1,2-diamine (5) (38%) and N1-(5-fluoro-2,4-dinitrophenyl)-N2-phenyl-4-(trifluoromethyl)benzene-1,2-diamine (6) (51%) that can be separated by chrom...
Toluene is one of several cosubstrates able to support the cometabolism of trichloroethylene (TCE) by soil microbial communities. Indigenous microbial populations in soil degraded TCE in the presence, but not the absence, of toluene after a 60- to 80-h lag period. Initial populations of toluene and TCE degraders ranged from 0.2 x 10(3) to 4 x 10(3) cells per g of soil and increased by more than...
vapor-phase methylation of toluene using methanol and its isopropylation with 2-propanol has been investigated ina down flow reactor under atmospheric conditions using n2 carrier over a series of surface modified andunmodified zsm-5 (si/al= 60-170) loaded with h3po4, differing in the external surface treatment of the zeolites.the feed molar ratios of toluene/methanol and toluene/2-propanol were...
This study describes the effects of the substituents on electrochemical behavior and antioxidant activity of the three tetradentate Schiff bases, containing ethane-1,2- diamine, propane-1,3- diamine and butan-1,4- diamine as the amine part and salicylaldehyde, and corresponding Cd(II) complexes. Cyclic voltammograms of these compounds were recorded in dimethylsulfoxide and 0.1 M sodium perchlor...
In recent decades the organic solvent toluene (methylbenzene) has emerged as one of the best-studied neurotoxins. Long-term and intense exposure to toluene vapors in humans who abuse spray paint and related substances has led to the recognition that toluene has a severe impact on central nervous system myelin. Chronic toluene abuse produces a devastating neurological disorder, of which dementia...
Introduction: In the present study, was performed to investigate the relationship between toluene(1000 ppm), noise, toluene and toluene along with noise (frequencies 250- 2000 Hz) per auditory Brain Stem response (ABR) on rabbits in which being exposed to this contaminants. Materials & Methods: Three months old, male adult white New Zealand rabbits (1400-1700 g body weight) were used throug...
INTRODUCTION Intolerance to various foods, excluding bona fide coeliac disease and lactose intolerance, represents a growing cause of patient visits to allergy clinics.Histamine intolerance is a long-known, multifaceted clinical condition triggered by histamine-rich foods and alcohol and/or by drugs that liberate histamine or block diamine oxidase (DAO), the main enzyme involved in the metaboli...
Toluene was discovered as the structure template for the synthesis of large-cage RHO-type zeolitic imidazolate frameworks (ZIF-11 and ZIF-12) in an alcohol-based solution where benzimidazole-toluene interactions play a decisive structure-directing role; otherwise it leads to small-cage SOD-type ZIF-7 and ZIF-9 without toluene. The specific π-π interactions make toluene molecules adopt a specifi...
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