scholarly journals Synthesis and characterization of heterocyclic substituted fluoran compounds

2007 ◽  
Vol 72 (11) ◽  
pp. 1039-1044
Author(s):  
Sachin Patel ◽  
Manish Patel ◽  
Ranjan Patel
Keyword(s):  
Sulphuric Acid ◽  
1H Nmr ◽  
Elemental Analysis ◽  
Synthesis And Characterization ◽  
Spectroscopic Methods ◽  
Keto Acid ◽  
Visible Spectroscopy ◽  
Uv Visible ◽  
Quinazolinone Derivatives

New quinazolinone-substituted fluoran compounds were synthesized by reaction of keto acid, 2?-carboxy-2-hydroxy-4-N-pyrrolidinylbenzophenone with different quinazolinone derivatives in the presence of conc. sulphuric acid. All the synthesized fluoran compounds were characterized by spectroscopic methods (IR, 1H-NMR and UV-visible spectroscopy) and elemental analysis. The fluoran compounds are colorless or nearly colorless and develop color on contact with electron-accepting compounds.

scholarly journals The synthesis and characterization of some new diazoamino derivatives

2010 ◽  
Vol 16 (1) ◽  
pp. 89-95
Author(s):  
Mihaela Mocanu
Keyword(s):  
1H Nmr ◽  
Bioactive Compounds ◽  
Elemental Analysis ◽  
Analysis Data ◽  
Biological Properties ◽  
Synthesis And Characterization ◽  
Elemental Analysis Data ◽  
Spectral Measurements ◽  
Inflammatory Processes

The sulfonamidic moiety is much encountered in structures of bioactive compounds. In the present paper the studies on the sulfonamidated aryloxyalkylcarboxylic acids are extended by their attaching on certain substrata able to confer some special biological properties to the final products, such as anti-tumor and antioxidant actions useful in treating inflammatory processes, ulcer, convulsions and diabetes, as well as a herbicidal action. The stepwise syntheses of the sulfonamidated aryloxyalkylcarboxylic acid derivatives and their characterization by elemental analysis data and IR, 1H-NMR and UV-Vis spectral measurements are described. The newly obtained compounds could show potential pharmaceutical and herbicide properties.

Synthesis and Characterization of Gold Nanoparticles Synthesized in Gel and Paper by Electrolysis

2019 ◽  
Vol 824 ◽  
pp. 163-167
Author(s):  
Pema Dechen ◽  
Ekasith Somsook
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Gold Nanoparticles ◽  
Room Temperature ◽  
Synthesis And Characterization ◽  
Visible Spectroscopy ◽  
Gold Leaf ◽  
Uv Visible ◽  
Scanning Electron

In this report, synthesis and characterization of gold nanoparticles (AuNPs) from gold leaf by electrolysis in two different media (gel and paper) in presence of sodium chloride (NaCl), glucose (C6H12O6) and polyvinyl pyrrolidone (PVP) at room temperature were investigated. Graphite was used as two electrodes, NaCl was used as an electrolyte, C6H12O6 was used as reducing agent and PVP was used as stabilizer to control the aggregation of the nanoparticles. UV-Visible spectroscopy (UV-Vis) and scanning electron microscopy (SEM) were used to confirm the characteristics and morphologies of the synthesized AuNPs.

Synthesis and Characterization of Substituted μ-oxo-bis[tetra-phenylporphyrinatoiron] Compounds

2015 ◽  
Vol 748 ◽  
pp. 183-186
Author(s):  
Zhi Cheng Sun ◽  
Shu Ying Chen ◽  
Zhi Peng Guo ◽  
Mei Juan Cao ◽  
Lu Hai Li
Keyword(s):  
Infrared Spectra ◽  
Elemental Analysis ◽  
Aromatic Aldehydes ◽  
Synthesis And Characterization ◽  
Visible Spectroscopy ◽  
Reaction Conditions ◽  
One Pot ◽  
Optimum Reaction ◽  
Novel Method

A novel one-pot method for the synthesis of substituted μ-oxo-bis [tetraphenyl porphyrinatoiron] compounds ([TRPPFe]2O) from pyrrole and aromatic aldehydes was proposed and investigated in this paper. Four kinds of [TRPPFe]2O were designed and synthesized by one-pot reaction and characterized by elemental analysis, infrared spectra and ultraviolet-visible spectroscopy. Moreover, the [TRPPFe]2O yields of 18.7~22.4% could be obtained with this novel method under the optimum reaction conditions.

scholarly journals Synthesis and characterization of 2,3,13,14-tetramethyl (ethyl or p-tolyl)- 1,4,12,15-tetraazacyclodocosa-1,3,12,14-tetraene complexes of Mg(II), Ca(II), Sr(II) and Ba(II)

2002 ◽  
Vol 67 (7) ◽  
pp. 523-530 ◽  
Author(s):  
Raghu Prasad ◽  
Seema Gupta
Keyword(s):  
1H Nmr ◽  
Elemental Analysis ◽  
Membered Ring ◽  
Spectral Studies ◽  
Synthesis And Characterization

2+2 Cyclocondensation of 1,7-diaminoheptane with ?-diketones, viz 2,3-butanedione, 3,4-hexanedione or 4,4?-dimethylbenzil, in the presence of Mg2+, Ca2+, Sr2+ and Ba2+ ions as templates yields a series of complexes of the type [ML(X2)](where L = N4 macrocycle having a 22-membered ring and X=Cl or NCS). The resulting complexes were characterized by elemental analysis conductance measurements and IR and 1H-NMR spectral studies.

scholarly journals Synthesis and characterization of Fe(III) complex with thiosemicarbazide-based ligand

2020 ◽  
Keyword(s):  
Mass Spectrometry ◽  
Condensation Reaction ◽  
Azomethine Nitrogen ◽  
Synthesis And Characterization ◽  
Stoichiometric Ratio ◽  
Significant Activity ◽  
Visible Spectroscopy ◽  
Thiol Form ◽  
Uv Visible

Complex iron(III) salicylaldehyde thiosemicarbazone with a formula Na[Fe(STSC)2] have been synthesized. Ligand, salicylaldehyde thiosemicarbazone (SCT) was prepared through the condensation reaction of salycilaldehide with thiosemicarbazide. Na[Fe(STSC)2] has been synthesized by reacting FeCl3 with thiosemicarbazide based ligand bearing ONS donor atoms. Complex has been formulated and characterized by mass spectrometry, infrared and UV/visible spectroscopy. The facts showed the formation of a complex in metal:ligand stoichiometric ratio 1:2. The ligand is coordinated as an ONS tridentate dianion via oxygen atom after the deprotonation of the phenolic OH-group, azomethine nitrogen and sulphur in thiol form of the deprotonated thiosemicarbazide residue. Antioxidant activity was determined, where ligand showed significant activity, while complex, at low concentration, exhibited almost no activity.

scholarly journals Synthesis and Characterization of 1-phenyl-3-methyl-4-stearoylpyrazol-5-one and Its Lanthanum(III) and Tungsten(VI) Complexes

2020 ◽  
pp. 140-151
Author(s):  
A. I. C. Ehirim ◽  
C. K. Enenebeaku ◽  
C. Asimole ◽  
M. O. C. Ogwuegbu ◽  
E. N. O. Ejike
Keyword(s):  
Elemental Analysis ◽  
13C Nmr ◽  
Synthesis And Characterization ◽  
Conductivity Measurements ◽  
Melting Points ◽  
1H And 13C Nmr ◽  
Solubility Profile ◽  
Uv Visible ◽  
Metal Ligand

The ligand, 1-phenyl-3-methyl-4-stearoylpyrazol-5-one (HSPy), and its La(III) and W(VI) complexes were synthesized and characterized spectroscopically using elemental analysis, UV-visible, IR, 1H and 13C NMR. Physical properties such as colour, melting points, conductivity measurements and solubility profile were also investigated. La(III) and W(VI) reacted with the ligand in the metal-ligand mole ratios of 1:3 and 1:2 to form neutral complexes of diaquo-trischelate La(SPy)3.2H2O and dioxoaquo-bischelate, WO2(SPy)2.H2O respectively.

SYNTHESIS AND CHARACTERIZATION OF TI (III), V (III),VO (IV), MOO (V),FE (II) AND FE (III) COMPLEXES OF BENZIL- 2,4-DINITROPHENYL HYDRAZONE P-BROMO ANILINE

2016 ◽  
Vol 2 (4) ◽  
pp. 177
Author(s):  
Raj Kamal Rastogi ◽  
Sonu Sharma ◽  
Gulshan Rastogi ◽  
Alok K. Singh
Keyword(s):  
Elemental Analysis ◽  
Magnetic Measurement ◽  
Measurement Data ◽  
Molar Conductance ◽  
Octahedral Geometry ◽  
Synthesis And Characterization ◽  
Distorted Octahedral Geometry ◽  
Distorted Octahedral ◽  
Uv Visible

The complexes of Benzil-2, 4-dinitrophenyl hydrazone-p- bromo aniline with Ti(III),V(III), VO(IV),MoO (V), Fe(II), Fe(III) have synthesized and characterized by elemental analysis, magnetic measurement data, molar conductance, TGA,UV-visible and IR spectra data. The complexes of Ti (III), V (III), Fe (II) and Fe (III) have octahedral geometry while VO (IV) and MoO(V) have distorted octahedral geometry due to the presence of M=O moiety.

scholarly journals Preparation and Characterization of the Schiff Base Ligand (E)- N-(3-nitrobenzylidene) isonicotinohydrazide and its Silver (I) Complex [Ag(NNBIH)2]+

2012 ◽  
Vol 9 (2) ◽  
pp. 191-195
Author(s):  
SHAHRIAR GHAMMAMY ◽  
SAJJAD SEDAGHAT
Keyword(s):  
Thermal Decomposition ◽  
Schiff Base ◽  
Schiff Base Ligand ◽  
Synthesis And Characterization ◽  
Nitrate Salt ◽  
Visible Spectroscopy ◽  
Multistage Processes ◽  
Ft Ir ◽  
Uv Visible

We describe the synthesis and characterization of a new silver (I) complex of the Schiff base ligand (E) - N-(3-nitrobenzylidene) is onicotinohydrazide that abbreviated as NNBIH was synthesized and characterized. Ag (I) Metal complex of this Schiff base ligand prepared by reaction of nitrate salt of Ag (I) with NNBIH. Characterization of the ligand was made by microanalyses, FT-IR, UV–Visible spectroscopy and its complex was made by microanalyses, FT-IR and UV–Visible spectroscopy. TG- DTA and other analytical methods have been applied to the investigation of the thermal behavior and Structure of the compound [Ag(NNBIH)2]+. Thermal decomposition of these compounds is multistage processes.

scholarly journals Synthesis and characterization of ether linkage containing bis-fluoran compounds

2003 ◽  
Vol 68 (8-9) ◽  
pp. 607-613 ◽  
Author(s):  
Ritesh Patel ◽  
Jignesh Patel ◽  
Manish Patel ◽  
Rawan Patel
Keyword(s):  
Acetic Acid ◽  
Organic Solvent ◽  
Potassium Carbonate ◽  
Synthesis And Characterization ◽  
Dimethyl Formamide ◽  
Visible Spectroscopy ◽  
Acidic Media ◽  
Ether Linkage ◽  
Uv Visible

2?-chloro-6?-diethylaminofluoran and 2?-chloro-3?-methyl-6?-diethylaminofluoran were reacted with various diphenols in dimethyl formamide in the presence of potassium carbonate to give the related bisfluoran compounds. All the synthesized derivatives were identified by conventional methods (IR, 1H-NMR), elemental analysis and UV-visible spectroscopy in organic solvent and 95 % acetic acid. All the fluoran compounds change their color in acidic media.

scholarly journals Synthesis and characterization of erbium trioxide nanoparticles as photocatalyzers for degradation of methyl orange dye

2019 ◽  
Vol 12 (1) ◽  
pp. 15-21 ◽  
Author(s):  
Rifat Mohammed Dakhil ◽  
Tayser Sumer Gaaz ◽  
Ahmed Al-Amiery ◽  
Mohd S. Takriff ◽  
Abdul Amir H. Kadhum
Keyword(s):  
Methyl Orange ◽  
Synthesis And Characterization ◽  
X Ray Diffraction ◽  
Visible Spectroscopy ◽  
X Ray ◽  
Uv Visible ◽  
Methyl Orange Dye ◽  
Microscopy Techniques ◽  
Degradation Of Methyl Orange

Abstract. The present work focuses on the photocatalytic degradation of methyl orange (MO) on erbium trioxide nanoparticles (Er2O3 NPs). In this study, Er2O3 nanoparticles were synthesized and fully characterized via various techniques, including X-ray diffraction, UV–visible spectroscopy and scanning electron microscopy techniques. The results revealed that the photocatalytic activity of the prepared Er2O3 NPs was manifested in MO photodegradation. The optimum efficiency obtained was 16 %.

Sign in / Sign up

Export Citation Format

Share Document