Synthesis, Characterization, and Acid - Base Properties of Ruthenium(II) Complexes Containing N-ethyl-4-([1,10]-phenanthroline[5,6 - f]imidazol-2-yl)carbazole

2010 ◽  
Vol 63 (4) ◽  
pp. 700 ◽  
Author(s):  
Li Xu ◽  
Peng-Xin Liu ◽  
Guo-Liang Liao ◽  
Xiang Chen ◽  
Hui Chao ◽  
...  
Keyword(s):  
Cyclic Voltammetry ◽  
Nmr Spectroscopy ◽  
1H Nmr ◽  
Elemental Analysis ◽  
1H Nmr Spectroscopy ◽  
Room Temperature ◽  
Emission Spectra ◽  
Ph Effects ◽  
Acid Base ◽  
Polypyridyl Complexes

Three new ruthenium(ii) polypyridyl complexes, [Ru(phen)2(Hecip)]2+ (1), [Ru(phen)(Hecip)2]2+ (2), and [Ru(Hecip)3]2+ (3) complexes (phen = 1,10-phenanthroline, Hecip = N-ethyl-4-([1,10]-phenanthroline[5,6–f]imidazol-2-yl)carbazole) were synthesized and characterized by ES-MS, 1H NMR spectroscopy, elemental analysis, and cyclic voltammetry. The emission spectra of complexes were measured both at room temperature and at 77 K in a 4/1 (v/v) EtOH/MeOH matrix. All three complexes display luminescence properties which are close to that featured by the parent [Ru(phen)3]2+ species. The pH effects on the UV-vis and emission spectra of RuII complexes were also studied, and complexes 1, 2, and 3 were found to act as ‘on–off’ luminescent pH switches with maximum on–off ratios of 17, 230, and 90, respectively.

scholarly journals Synthesis and characterization of new Oxazine , Thiazine and Pyrazol derived from chalcones

2014 ◽  
Vol 11 (2) ◽  
pp. 477-485 ◽  
Author(s):  
Baghdad Science Journal
Keyword(s):  
Nmr Spectroscopy ◽  
Hydrazine Hydrate ◽  
Elemental Analysis ◽  
Potassium Hydroxide ◽  
1H Nmr Spectroscopy ◽  
Room Temperature ◽  
Potassium Hydroxide Solution ◽  
Synthesis And Characterization ◽  
Heterocyclic Derivatives

In this study, chalcones were synthesis by condensing 2-acetylpyridine with aromatic aldehyde derivatives in dilute ethanolic potassium hydroxide solution at room temperature according to Claisen-Schmidt condensation. After that, new heterocyclic derivatives such as Oxazine, Thiazine and Pyrazol were synthesis by reaction between chalcones with urea, thiourea and hydrazine hydrate respectively scheme 1. All these compounds wrer characterization by FTIR, 1H-NMR spectroscopy and elemental analysis.

SYNTHESIS AND PROPERTIES OF INTERACTION PRODUCTS OF TRIS[TRI(BUTOXY)TITANATE]BORON AND ALIPHATIC FLUORINATED ALCOHOLS

2018 ◽  
Vol 59 (1) ◽  
pp. 75 ◽  
Author(s):  
N.Ya. Kuzmenko ◽  
S.N. Kuzmenko ◽  
O.V. Skrinnik ◽  
V.V. Bugrym
Keyword(s):  
Nmr Spectroscopy ◽  
Molecular Mass ◽  
1H Nmr ◽  
Elemental Analysis ◽  
1H Nmr Spectroscopy ◽  
Alkoxy Group ◽  
Partial Substitution ◽  
Fluorinated Alcohols ◽  
Analysis Determination

Synthesis and properties of products based on tris[[tri(butoxy)titanate]boron with complete or partial substitution of butoxy groups linked with titanium by fluorinated alkoxy group were described. Extracted products were liquid or solid substances which are high soluble in aliphatic-, aromatic- chloraromatic- and chlorinated hydrocarbons, low alcohols, and ketone. Their structure was confirmed by elemental analysis, determination of molecular mass, IR and 1H NMR spectroscopy.

A highly efficient, solvent-free and energy-effective method of cellulose acetylation

e-Polymers ◽  
2005 ◽  
Vol 5 (1) ◽  
Author(s):  
Abdelmajid Memmi ◽  
Robert Granet ◽  
Yves Champavier ◽  
Pierre Krausz
Keyword(s):  
Nmr Spectroscopy ◽  
Acetic Anhydride ◽  
1H Nmr ◽  
1H Nmr Spectroscopy ◽  
Room Temperature ◽  
Solvent Free ◽  
Highly Efficient ◽  
Solvent Free Conditions ◽  
Cellulose Acetates

AbstractAcetylation of cellulose by acetic anhydride was found to be catalysed quantitatively by iodine under solvent-free conditions at room temperature. Cellulose acetates were characterised by 1H NMR spectroscopy.

SYNTHESIS AND EVALUATION OF SOME NEWER QUINAZOLINONYL SUBSTITUTED BENZOXAZEPINYL / BENZOTHIAZEPINYL INDOLES AS POTENT ANTICONVULSANT AGENTS

INDIAN DRUGS ◽  
2019 ◽  
Vol 56 (03) ◽  
pp. 18-24
Author(s):  
Archana ◽  
Keyword(s):  
Nmr Spectroscopy ◽  
Acute Toxicity ◽  
1H Nmr ◽  
Elemental Analysis ◽  
Anticonvulsant Activity ◽  
1H Nmr Spectroscopy ◽  
Standard Drug ◽  
Anticonvulsant Agents ◽  
Phenytoin Sodium

new series of 3-[3-amino-2-methyl-6-substituted quinazolin-4(3H)-onyl chalconyl)-2-substituted indoles (3-8), 3-[3-Amino-2-methyl-6- substituted quinazolin-4(3H) -onyl-benzoxazepin/benzo -thiazepin- 2-yl] -2-substituted indoles (9-20) and 3-[3-amino-2-methyl-6-substituted quinazolin-4(3H) -onyl-3- (sub-stituted phenylaminomethylene) -benzoxazepin/benzothizepin-2-yl] -2-substitutedindoles (21-44) were synthesised and evaluated for anticonvulsant activity. All these compounds were screened in vivo, for their anticonvulsant activity and acute toxicity. Coumpund 44 , 3-[3-amino-2-methyl-6-bromoquinazolin- 4(3H)-onyl-3- (chlorophenylaminomethylene)-benzothiazepine-2-yl]-2-chloroindole, was found to be most potent compound of this series , more potent than standard drug phenytoin sodium. The homogeneity of all the compounds have been established by elemental analysis, IR and 1H-NMR spectroscopy.

scholarly journals 4,4′-Di-tert-butyl-2,2′-bipyridinium Trifluoromethanesulfonate

Molbank ◽  
10.3390/m1261 ◽  
2021 ◽  
Vol 2021 (3) ◽  
pp. M1261
Author(s):  
Shintaro Kodama ◽  
Kazuki Bunno ◽  
Akihiro Nomoto ◽  
Akiya Ogawa
Keyword(s):  
Nmr Spectroscopy ◽  
1H Nmr ◽  
Diethyl Ether ◽  
Elemental Analysis ◽  
1H Nmr Spectroscopy ◽  
Trifluoromethanesulfonic Acid ◽  
Simple Method ◽  
Tert Butyl ◽  
Ft Ir ◽  
Direct Use

4,4′-di-tert-butyl-2,2′-bipyridinium trifluoromethanesulfonate was synthesized by stirring 4,4′-di-tert-butyl-2,2′-bipyridine with scandium(III) trifluoromethanesulfonate in acetonitrile, followed by precipitation with diethyl ether. The structure of the new compound was characterized by FT-IR, 1H, 13C{1H} and 19F{1H} NMR spectroscopy and CHN elemental analysis. This is a safe and simple method to obtain mono-protonated bipyridinium trifluoromethanesulfonate without the direct use of trifluoromethanesulfonic acid.

scholarly journals Bimetallic Cd(II) and Hg(II) complexes of 1, 4-bis-(5-H/methyl/chloro-1H-benzimidazol- 2-yl)-1, 2, 3, 4-butanetetraols

2005 ◽  
Vol 70 (8-9) ◽  
pp. 1067-1073 ◽  
Author(s):  
Aydin Tavman
Keyword(s):  
Nmr Spectroscopy ◽  
1H Nmr ◽  
Elemental Analysis ◽  
Metal Ion ◽  
1H Nmr Spectroscopy ◽  
Imidazole Ring ◽  
Molar Conductivity ◽  
Hydroxyl Groups ◽  
Hydroxyl Oxygen ◽  
Oxygen Atoms

The bimetallic complexes of 1,4-bis-(5-H/methyl/chloro-1H-benzimidazol 2-yl)-1,2,3,4-butanetetraols (L1?L3) with CdCl2 and HgCl2 were synthesized and characterized by elemental analysis, molar conductivity, as well as IR and 1H-NMR spectroscopy. The ligands coordinate to the metal ion through all of the hydroxyl oxygen atoms as tetradentate in the Hg(II) complexes of L1?L3 and in the Cd(II) complexes of L2 and L3. In theCd2(L1)Cl4 complex, the ligand acts as tetradentate through the benzimidazole nitrogen atoms and the two oxygen atoms of the hydroxyl groups near the imidazole ring.

scholarly journals New ferrocense containing tiophene derivatives

2019 ◽  
Vol 487 (6) ◽  
pp. 626-629
Author(s):  
E. N. Rodlovskaya ◽  
V. A. Vasnev
Keyword(s):  
Nmr Spectroscopy ◽  
Magnetic Materials ◽  
Schiff Bases ◽  
1H Nmr ◽  
Elemental Analysis ◽  
1H Nmr Spectroscopy

A new 2-amino-4-ferrocenyl-thiophene-3-carbonitrile was synthesized by the Gevald reaction and Schiff bases, precursors for new optoelectronic and magnetic materials, were obtained on its basis. The structures of the synthesized compounds were determined by elemental analysis, IR and 1H NMR spectroscopy.

N-Heterocyclic Carbene-facilated Condensation of 3-Methylphenylboronic Acid to the Boroxine

2013 ◽  
Vol 68 (5-6) ◽  
pp. 453-457 ◽  
Author(s):  
Dongxiang Zhang ◽  
Jie Li ◽  
Xiao Dong ◽  
Xing Zhou ◽  
Zhi Yang ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
Single Crystal ◽  
1H Nmr ◽  
Elemental Analysis ◽  
1H Nmr Spectroscopy ◽  
Phenylboronic Acid ◽  
X Ray Diffraction ◽  
X Ray

The adduct of (3-MeC6H4)3B3O3 with an N-heterocyclic carbene (NHC=1,3-diethyl-4,5- dimethylimidazol-2-ylidene) was prepared by reacting 2.5 equiv. of 3-methylphenylboronic acid with 1 equiv. of the NHC. This reaction shows a novel carbene-facilitated condensation of substituted phenylboronic acid monomers. The structure of the compound (3-MeC6H4)3B3O3(NHC) (1) has been characterized by 1H NMR spectroscopy, elemental analysis, and single-crystal X-ray diffraction studies

scholarly journals The synthesis of 4-amino-5-(quinolin-2-yl)-4H-1,2,4-triazole-3-thiol and its interaction with aldehydes

2021 ◽  
Vol 19 (1(73)) ◽  
pp. 48-52
Author(s):  
D. М. Zozulynets ◽  
A. G. Kaplaushenko ◽  
A. S. Korzhova
Keyword(s):  
Nmr Spectroscopy ◽  
Carboxylic Acid ◽  
Thin Layer ◽  
1H Nmr ◽  
Elemental Analysis ◽  
1H Nmr Spectroscopy ◽  
Quinaldic Acid

Aim. To synthesize 4-amino-5-(quinolin-2-yl)-4H-1,2,4-triazole-3-thiol and study its reactivity in the reactionwith aldehydes.Results and discussion. 4-Amino-5-(quinolin-2-yl)-4H-1,2,4-triazole-3-thiol was synthesized, and a number of 4-(ethyl, aryl)idenamino derivatives were obtained on its basis.Experimental part. Using a series of four successive reactions based on quinoline-2-carboxylic acid, 4-amino-5-(quinolin-2-yl)-4H-1,2,4-triazole-3-thiol was synthesized; its interaction with aldehydes allowed to obtain a number of 4-(ethyl, aryl)idenamino derivatives. The structure of all compounds synthesized was confrmed by IR and 1H NMR spectroscopy, as well as by elemental analysis, and their purity by thin layer chromatography.Conclusions. 4-Amino-5-(quinolin-2-yl)-4H-1,2,4-triazole-3-thiol has been synthesized. It has been found that its interaction with aldehydes leads to the formation of new 4-((ethyl, aryl)idenamino)-5-(quinolin-2-yl)-4H-1,2,4-triazole-3-thiols.Key words: 5-(quinolin-2-yl)-1,2,4-triazole-3-thiol; 4-arylidenamino derivatives; quinaldic acid; biologicalactivity

scholarly journals PRODUCTS OF INTERACTION BETWEEN 2,5-DIAMINO- 1,3,4-THIADIAZOLE AND p-AMINOBENZALDEHYDE

2018 ◽  
Vol 59 (5) ◽  
pp. 16 ◽  
Author(s):  
Marina A. Tyutina ◽  
Tatyana V. Kudayarova ◽  
Elena A. Danilova
Keyword(s):  
Mass Spectrometry ◽  
Nmr Spectroscopy ◽  
Quantum Chemistry ◽  
1H Nmr ◽  
Elemental Analysis ◽  
1H Nmr Spectroscopy ◽  
Geometrical Structure

5-Amino-2N-benzylidene-4'-amino-1,3,4-thiadiazole and 2,5 bis (N-benzylidene-4'-amino) - 1,3,4-thiadiazole was synthesized by interaction between 2,5-diamino-1,3,4-thiadiazole and p –ami-nobenzaldehyde in ethanol environment. The structure was established on data of mass spectrometry, the elemental analysis, UV-Vis, IR, 1H NMR spectroscopy. An electronic and geometrical structure of the synthesized compounds was studied by methods of quantum chemistry.

Sign in / Sign up

Export Citation Format

Share Document