[PDF] Top 20 Prácticas pedagógicas en la enseñanza de la lectoescritura
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Synthesis, Characterization and Antimicrobial Studies of complexes of Some Metal Ions with 2-[2-Amino-5- (3,4,5-Trimethoxy-benzyl)-Pyrimidinyl-4-azo]-4- Bromo-Phenol
... Azo complexes with metal ions were studied in solution using ethanol as a solvent[13], To determine the concentration of metal to the ligand ratio in the complex following molar ratio ... See full document
166
MICROWAVE SYNTHESIS CHARACTERIZATION AND ANTIMICROBIAL STUDIES OF NOVEL LIGAND (2, 6 DIACETYLPYRIDINE AND 5 AMINO 1, 3, 4 THIADIAZOLE 2 THIOL) AND ITS METAL COMPLEX
... Electronic spectroscopy is an analytical technique to study the electronic structure and its dynamics in atoms and molecules. Electronic absorption spectra are often very helpful in the evaluation of results furnished by ... See full document
78
SYNTHESIS AND CHARACTERIZATION OF MIXED LIGAND COMPLEXES OF 1 [(1E) N (4 BROMO 3 ETHOXYPHENYL) ETHANIMIDOYL]NAPHTHALEN 2 OL AND 4 BROMO 2 {(E) [(2 METHYL 5 NITROPHENYL)IMINO]METHYL}PHENOL TRANSITION METAL(II) IONS
... ligand complexes of Co(II), Ni(II), Cu(II) and Zn(II) with Schiff bases 1-[(1E)-N-(4-bromo-3-ethoxyphenyl)ethanimidoyl] naphthalen-2-ol(L 1 H) and ...(L 2 H) have been ... See full document
16
SYNTHESIS AND CHARACTERIZATION OF 3 [(5 (2 NITROPHENYL) 1, 3, 4 OXADIAZOL 2 YL) METHYL AMINO] 2 METHYL QUINAZOLIN 4(3H) ONE
... isomers, 2-quinazolinone and 4-quinazolinone, with the 4-isomer being the more ...the synthesis of quinazolinones and their derivatives of specific pharmacological ...present some novel ... See full document
10
Crystal structures of butyl 2 amino 5 hydroxy 4 (4 nitrophenyl)benzofuran 3 carboxylate and 2 methoxyethyl 2 amino 5 hydroxy 4 (4 nitrophenyl)benzofuran 3 carboxylate
... As shown in Fig. 1, two different constitutional isomers can in principle form during the reaction, with the p-nitrophenyl group functionalizing the benzofuran ring in position 4 (isomer A) or 7 (isomer B). The ... See full document
246
Synthesis, Characterization and Antimicrobial Activity of N [{4 [2 {5 (4 chlorophenyl) 3 (4 methoxyphenyl) 4, 5 dihydro pyrazol 1 yl} 2 oxoethoxy]phenyl} methylene]substituted aniline
... Biological screening result of N-[{4-[2-(5-(4-chlorophenyl)-3-(4-methoxyphenyl)-4,5-dihydro-pyrazol-1-yl)-2- oxoethoxy]phenyl}methylene]substituted aniline based ... See full document
7
Spectral studies on some transition metal complexes of 3-(4′-pyridyl)-4-phenyl-triazoline-5-thione
... and complexes indicate that simultaneous Metal – N and Metal – S bonding results in a decrease in the frequency of thioamide band IV by 40-80 cm –1 ... See full document
7
PGR Evaluation of Novel Synthesized Five and Six Membered Cyclic Imides
... both synthesis techniques but more or less better yield is obtained in case of green pathway than con ven ti on al ex cept 1-(4-methylpyridin-2-yl) ... See full document
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4 Bromo 2 (2 pyridylmethyliminomethyl)phenol
... does not exist in this zwitterionic form. However, the molecule is able to form complexes (Khoo, Yan, Goh & Ng, 2000; Khoo et al., 2001). A previous study on the Schiff base 7-methoxy-3- ... See full document
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SYNTHESIS, SPECTRAL AND THEORETICAL CHARACTERIZATION OF 5,6-DICHLORO/DIMETHYL-2-(2´,3´/2´,4´/2´,5´/3´,4´/3´,5´-DIMETHOXYPHENYL)-1H-BENZIMIDAZOLES
... (3, 4, 8 and 9) for which these data are absent in the ...melt. 3´,4´-Dimethoxy derivatives (4 and 9) have higher decomposition points as compared to the ...Compound 5, ... See full document
27
5 Bromo 2 hydroxybenzaldehyde 4 ethylthiosemicarbazone
... Br1 0.0165 (2) 0.0815 (4) 0.0261 (2) 0.00156 (19) 0.00976 (16) 0.00158 (19) C1 0.0186 (18) 0.0130 (14) 0.0228 (17) 0.0006 (13) 0.0052 (14) −0.0009 (13) C2 0.0227 (19) 0.0187 (15) 0.0172 (16) 0.0008 ... See full document
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SYNTHESIS AND CHARACTERIZATION (IR, ELEMENTAL ANALYSIS, ELECTRONIC AND MAGNETIC SUSCEPTIBILITY STUDIES) OF 2 N PHENYL IMINO 3 PHENYL 4 (P HYDROXY PHENYL) Δ4 THIAZOLINE DERIVATIVES
... Complexes of transition metals ions containing ligands with N, S and N, S, O donors are known to exibit interesting stereo chemical, electrochemical and electronic properties. Semicarbazones and thio ... See full document
105
Synthesis, Spectroscopy and Magnetic Characterization of Five Dinuclear Copper(II) Complexes with 2, 3 or 4-Pyridinemethanol as the Ligand
... 44. Weder J.E., Hambley T.W., Kennedy B.J., Lay P.T., MacLachlan T.D., Ramley R.B., Deffs C.D., Murray K.S., Moubaraki B., Warwick B., Biffin J.R. and Regtop H.L. Ant—inflammatory dinuclear copper(II) complexes ... See full document
17
5 Bromo 2 chloropyrimidin 4 amine
... Br1 0.03877 (18) 0.05169 (19) 0.04536 (18) 0.00220 (12) 0.01297 (12) −0.00698 (12) Cl1 0.0474 (4) 0.0627 (5) 0.0300 (3) 0.0046 (3) 0.0130 (3) −0.0023 (3) N1 0.0393 (12) 0.0544 ... See full document
24
Synthesis of 5-arylidine-2-(3, 4, 5-trimethoxyphenyl)-3-(4-phenylthiazol-2-yl) Thiazolidin-4-one Derivatives as a Novel Class of Antimicrobial Agents
... The synthesis of the new compounds was carried out as outlined in Scheme ...compounds 2~amino~4~phenylthiazole (1) was prepared according to the literature method by refluxing acetophenone, ... See full document
9
Synthesis, characterization and antimicrobial activity of novel schiff base and its transition metal complexes derived from 4 acetyl 3 methyl 1 phenyl 2 pyrazolin 5 one with 2 amino 4 phenyl thiazole
... Melting points were taken in one side open capillaries on a Melting point apparatus having model number VMP-D of a make VEEGO. Electronic Spectra were recorded in DMF solution on LAMBDA 19, UV/VIS/NIR (“SICART-CVN” at ... See full document
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SYNTHESIS OF 5ARYLIDINE2(3, 4, 5TRIMETHOXYPHENYL)3(4PHENYLTHIAZOL2YL) THIAZOLIDIN4ONE DERIVATIVES AS A NOVEL CLASS OF ANTIMICROBIAL AGENTS
... The synthesis of the new compounds was carried out as outlined in Scheme ...compounds 2‐amino‐4‐phenylthiazole (1) was prepared according to the literature method by refluxing acetophenone, ... See full document
8
(E) 4 [(4 Amino 5 bromopyridin 3 yl)iminomethyl]phenol
... Br1 0.0515 (2) 0.02764 (19) 0.0375 (2) −0.00060 (13) 0.01289 (16) −0.01098 (13) O1 0.0335 (11) 0.0214 (9) 0.0253 (10) 0.0049 (8) 0.0168 (8) 0.0036 (8) N1 0.0210 (11) 0.0234 (11) 0.0186 (11) 0.0013 (9) ... See full document
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4 Bromo 2 [5 methyl 2 (morpholin 4 yl) 1,3 thiazol 4 yl]phenol
... A mixture of 1-(5-bromo-2-hydroxyphenyl)-2-thiocyanatopropan-1-one (0.3 mmol) and morpholine (0.45 mmol) in 50 ml of methanol was heated under reflux for 20 min (Seliger et al., 1997). After ... See full document
19
PREPARATION AND IDENTIFICATION OF COMPLEXES IONS CO(II), CU(II) LIGAND 2 (BENZOTHIOZOLYL AZO 4 BENZYL PHENOL
... those ions with the ligand 2-(Benzothiozolyl azo- 4- benzyl phenol has been ...of metal: ligand has been (1:2) for every ...anticipated complexes structures ... See full document
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