نتایج جستجو برای: s triazine
تعداد نتایج: 713033 فیلتر نتایج به سال:
To help elucidate the mechanism of dechlorination of chlorinated triazines via metallic iron, terbutylazine (TBA: 2-chloro-4-ethylamino-6-terbutylamino-1,3,5-triazine), deisopropyl atrazine (DIA: 2-amino-4-chloro-6-ethylamino-1,3,5-triazine), and chlorinated dimethoxy triazine (CDMT: 2-chloro-4,6-dimethoxy-1,3,5-triazine) were degraded via zero valent iron under controlled pH conditions. The lo...
To improve understanding of the factors affecting pesticide occurrence in ground water, patterns of detection were examined for selected herbicides, based primarily on results from the National Water-Quality Assessment (NAWQA) program. The NAWQA data were derived from 2,227 sites (wells and springs) sampled in 20 major hydrologic basins across the USA from 1993 to 1995. Results are presented fo...
By JOSEPH H. BURCHENAL, M.D.,* LORRAINE F. WEBBER, BA., JUNE L. BIEDLER, B.A., G. %IARIE MEIGS, BA. AND GODFREY D. STOBBE, M.D. I N THE SCREENING of compounds for their possible chemotherapeutic effect against transplanted mouse leukemia triethylene melamine (TEM) (2,4, 6-triethylenimino-s-triazine) has been found to be effective in prolonging the survival time of mice with the Ak4 strain of tr...
The syntheses, crystallography and magnetic properties of a series of compounds of formula trans-[Fe(II)(L(1))2(NCX)2] (X = S, Se, BH3 (1-3)), cis-[Fe(II)(L(2))(NCX)2]·CH2Cl2 (X = S, Se, BH3 (4-6)) and trans-[Fe(II)(L(3))(NCX)2]n (X = S, Se (7-8)) are described (L(1) = 6-chloro-N(2),N(2)-diethyl-N(4),N(4)-di(pyridin-2-yl)-1,3,5-triazine-2,4-diamine, L(2) = 6,6'-(1,4,10,13-tetraoxa-7,16-diazacyc...
A significant group of compounds arise from substituted s-triazine derivatives that have tripodal heterocyclic compound. Compounds classified as possible created the largest and most diverse family organic compounds. In this study, we reported a new template has been syntheses cyanuric chloride its diamine derivative. The desired triamine 2, 4, 6-tris (p-aminoaanilino)-1, 3, 5-triazine (C21H21N...
In the title methanol-solvated salt, C14H19Cl3N5O2 (+)·Cl(-)·CH3OH, the triazine mol-ecule is protonated at one of the triazine N atoms. In the crystal, the triazine cations are linked through a pair of N-H⋯N hydrogen bonds, with graph-set R 2 (2)(8), forming an inversion dimer. The protonated N atom and the 2- and 4-amino groups of the triazine cation inter-act with the chloride anion through ...
The rate of CO(2) reduction in the S-triazine-resistant biotype of smooth pigweed (Amaranthus hybridus L.) was lower at all levels of irradiance than the rate of CO(2) reduction in the susceptible biotype. The intent of this study was to determine whether or not the lower rates of CO(2) reduction are a direct consequence of the same factors which confer triazine resistance. The quantum yield of...
In the title 1,2,4-triazine derivative, C(17)H(19)N(3)O(3), the heterocyclic ring is planar (r.m.s. deviation = 0.040 Å) and effectively coplanar with the adjacent phenyl ring [dihedral angle = 4.5 (2)°] but almost perpendicular to the (cyclo-hex-3-en-1-ylmeth-oxy)methyl residue [N-N-C-O torsion angle = 71.6 (5)°], so that the mol-ecule has an 'L' shape. Supra-molecular chains along [001] are f...
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