vic-Diacrylic ester porphyrins as starting materials for monobenzoporphyrin and opp-dibenzoporphyrin syntheses

1998 ◽  
Vol 76 (8) ◽  
pp. 1215-1219 ◽  
Author(s):  
Arezki Boudif ◽  
Sandrine Gimenez ◽  
Bernard Loock ◽  
Michel Momenteau
Keyword(s):  
H Nmr ◽  
Step Procedure ◽  
Uv Visible ◽  
Synthesis Methodology

Synthesis of a bis(vic-diacrylic ester) porphyrin using the "3+1" methodology is described. A two-step procedure is used to convert the vic-diacrylic ester porphyrin and the bis(vic-diacrylic ester) porphyrin to the monobenzoporphyrin and the opp-dibenzoporphyrin, respectively. Characterization of the compounds by 1H NMR and UV-visible spectroscopies is also discussed.Key words: tripyrrane, diformylpyrrole, vic-diacrylic ester porphyrin, "3+1" synthesis methodology, monobenzoporphyrin, opp-dibenzoporphyrin, photosensitizer.

Synthesis and spectral properties of ruthenium(II) complexes with tetra-15-crown-5-phthalocyanine and N-donor ligands

2003 ◽  
Vol 07 (12) ◽  
pp. 795-800 ◽  
Author(s):  
Yuliya G. Gorbunova ◽  
Yuliya Yu. Enakieva ◽  
Sergey G. Sakharov ◽  
Aslan Yu. Tsivadze
Keyword(s):  
Spectral Properties ◽  
Donor Ligands ◽  
Preparation Technique ◽  
Reaction Products ◽  
H Nmr ◽  
Trimethylamine Oxide ◽  
Donor Solvent ◽  
Ft Ir ◽  
Uv Visible

The synthesis of novel bis-axially coordinated ruthenium(II) complexes with tetra-15-crown-5-phthalocyanine and N-donor ligands ( R 4 Pc ) Ru ( L 2) ( R 4Pc2- = 4,5,4',5',4'',5'', 4''',5'''- tetrakis(1,4,7,10,13-pentaoxotridecamethylene)phthalocyaninate-ion, L = pyridine (py), isoquino-line (iqnl), triethylamine ( Et 3 N )) is reported. The preparation technique involves the interaction of ( R 4 Pc ) Ru ( CO )( CH 3 OH ) with trimethylamine oxide in an N-donor solvent. The advantage of this method consists in selective carbonyl ejection from ( R 4 Pc ) Ru ( CO ) X with simultaneous substi-tution by N-donor ligands. The application of this procedure allowed us to decrease essentially the reaction time, as compared with photochemical methods, as well as to increase substantially the yield of reaction products. UV-visible, 1 H NMR, FT-IR and mass-spectrometry were used for characterization of the obtained compounds.

Synthesis and Electrochemistry of Aluminum Porphycenes: Crystal and Molecular Structure of Methyl-σ-Bonded Aluminum Etioporphycene

1997 ◽  
Vol 01 (02) ◽  
pp. 109-119 ◽  
Author(s):  
ROGER GUILARD ◽  
VIRGINIE PICHON-PESME ◽  
HASSANE LACHEKAR ◽  
CLAUDE LECOMTE ◽  
ALLY M. AUKAULOO ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Crystal And Molecular Structure ◽  
Structural Data ◽  
Synthesis And Characterization ◽  
X Ray Diffraction ◽  
X Ray ◽  
H Nmr ◽  
Axial Ligands ◽  
Uv Visible

The synthesis and characterization of three monomeric aluminum porphycenes with anionic or σ-bonded axial ligands is reported. The investigated compounds are represented as ( EtioPc ) Al ( CH 3) and ( EtioPc ) AlX where EtioPc represents the dianion of etioporphycene and X = Cl − or OH −. Each synthesized complex was characterized by mass spectrometry. 1 H NMR, IR and UV-visible spectroscopies as well as by electrochemistry. Comparisons are made between the properties of complexes in the aluminum etioporphycene series and related chloro- or methyl σ-bonded Al ( III ) porphyrins containing octaethylporphyrin ( OEP ) or tetraphenylporphyrin ( TPP ) macrocycles. Comparisons are also made between the currently investigated compounds and a previously reported Al ( III ) μ-oxo dimer, [( EtioPc ) Al ]2 O . In addition, the crystal and molecular structure of ( EtioPc ) Al ( CH 3) was determined by X-ray diffraction. The molecular structure of this methyl-σ-bonded aluminum etioporphycene provides the first structural data for an aluminum porphycene compound. The aluminum(III) atom in ( EtioPc ) Al ( CH 3) is pentacoordinated and is located 0.54 Å from the plane of the four N -nitrogens.

scholarly journals CuAAC-based assembly and characterization of a ruthenium–copper dyad containing a diimine–dioxime ligand framework

2017 ◽  
Vol 198 ◽  
pp. 251-261 ◽  
Author(s):  
Nicolas Queyriaux ◽  
Eugen S. Andreiadis ◽  
Stéphane Torelli ◽  
Jacques Pecaut ◽  
Brad S. Veldkamp ◽  
...  
Keyword(s):  
Transient Absorption ◽  
Light Activation ◽  
Visible Absorption ◽  
H Nmr ◽  
Steady State Fluorescence ◽  
Molecular Dyads ◽  
Uv Visible ◽  
Photocatalytic Applications ◽  
Copper Centre

The design of molecular dyads combining a light-harvesting unit with an electroactive centre is highly demanded in the field of artificial photosynthesis. The versatile Copper-catalyzed Azide–Alkyne Cycloaddition (CuAAC) procedure was employed to assemble a ruthenium tris-diimine unit to an unprecedented azide-substituted copper diimine–dioxime moiety. The resulting RuIICuII dyad 4 was characterized by electrochemistry, 1H NMR, EPR, UV-visible absorption, steady-state fluorescence and transient absorption spectroscopies. Photoinduced electron transfer from the ruthenium to the copper centre upon light-activation in the presence of a sacrificial electron donor was established thanks to EPR-monitored photolysis experiments, opening interesting perspectives for photocatalytic applications.

scholarly journals Structural and Surface Characterization of Newly Synthesized D-π-D Type Schiff Base Ligand: (1E,2E)-3-[4-(Dimethylamino)phenyl]prop-2-en-1-ylidene)phenylamine

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Gulsah Gumrukcu ◽  
Serkis Garikyan ◽  
Gulnur Keser Karaoglan ◽  
Dolunay Sakar
Keyword(s):  
Schiff Base ◽  
Surface Properties ◽  
Schiff Base Ligand ◽  
Mass Spectra ◽  
Surface Characterization ◽  
Acid Base ◽  
H Nmr ◽  
Elemental Analyses ◽  
Uv Visible

A new Schiff base with D-π-D type, (1E,2E)-3-[4-(dimethylamino)phenyl]prop-2-en-1-ylidene)phenylamine, has been successfully synthesized using the reaction of (2E)-3-[4-(dimethylamino)phenyl]acrylaldehyde with aniline. The Schiff base ligand has been characterized by FTIR, UV-visible, and1H NMR as well as TG/DTA, SEM, BET, and elemental analyses and mass spectra. Surface properties and acid-base constants of Schiff base ligand were determined by IGC measurements.

scholarly journals Synthesis and Characterization of Lanthanide(III) Nitrate Complexes with Terdentate ONO Donor Hydrazone Derived from 2-Benzimidazolyl Mercaptoaceto Hydrazide and o-Hydroxy Aromatic Aldehyde

2011 ◽  
Vol 8 (4) ◽  
pp. 1900-1910 ◽  
Author(s):  
Vinayak M. Naik ◽  
Nirmalkumar B. Mallur
Keyword(s):  
Metal Ion ◽  
Molar Conductance ◽  
Spectral Studies ◽  
Hydrazone Ligand ◽  
Keto Form ◽  
Thermal Stabilities ◽  
H Nmr ◽  
Uv Visible ◽  
Nitrate Complexes

A few eight coordinated complexes of lanthanide(III) nitrate with 2-benzimidazolyl mercaptoaceto hydrazone ligand (LH2) with the general formula [Ln(LH)2NO2]H2O (where Ln = La, Pr, Nd, Sm and Gd) have been synthesized and characterized by elemental analysis, magnetic susceptibility, molar conductance, UV-Visible, IR and1H NMR spectral studies. The experimental data sustain stoichiometry of 1:2 (metal/ligand) for the complexes. The spectral data shows that the ligand reacts in keto form and behaves as monobasic terdentate in nature. The nitrate appears to coordinate in the bidentate fashion to the metal ion. The thermal stabilities of the complexes have been studied by TGA and their kinetic parameters were calculated using Coats-Redfern and MKN methods. The antimicrobial activity studies have been under taken and results are discussed.

Synthesis and characterization of 4-alkenyl and 4,4′-dialkenyl-2,2′-bipyridyl ligands bearing π-donor substituents

1997 ◽  
Vol 75 (3) ◽  
pp. 318-325 ◽  
Author(s):  
Manuel Bourgault ◽  
Thierry Renouard ◽  
Barbara Lognoné ◽  
Chakour Mountassir ◽  
Hubert Le Bozec
Keyword(s):  
Nonlinear Optics ◽  
Synthesis And Characterization ◽  
H Nmr ◽  
Uv Visible

The synthesis of a new series of π-donor mono-and disubstituted vinyl bipyridines (donor = 4-R2N-C6H4-; 4-RO-C6H4-; (C5H5)Fe(C5H4-); (C5H5)Ru(C5H4-)) has been achieved by reaction of the mono- and dilithio species of 4,4′-dimethyl-2,2′-bipyridine and the monolithic species of 4-nonyl-4′-methyl-2,2′-bipyridine with the appropriate aldehydes. Their 1H NMR and UV–visible characterizations are reported. Keywords: 2,2′-bipyridines, π-donor substituents, UV–visible, 1H NMR, nonlinear optics.

Synthesis and Characterization of Complexes of New Derivative of Cyclopentaphenanthren-3-one with Manganese (II), Iron (II), Cobalt (II), Nickel (II), and Copper (II) Ions

2020 ◽  
Vol 38 (3B) ◽  
pp. 197-203
Author(s):  
Liblab S. Jassim
Keyword(s):  
Metal Ion ◽  
Molar Conductance ◽  
Spectral Measurements ◽  
Chemical Preparation ◽  
Electron Pairs ◽  
H Nmr ◽  
Absorption Studies ◽  
Ft Ir ◽  
Uv Visible

This work involves the chemical preparation from a series of metal Complexes having the general composition M(L)2(H2O)2, where M = [Mn+2, Fe+2, Co+2, Ni+2 and Cu+2]. The ligand used was 9-fluoro-17-(1-hydrazono-2-hydroxyethyl)-11,17-dihydroxy-10,13,16-trimethyl-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[α]phenanthren-3-one (FHDTCP), who was diagnosed by H-NMR spectra. These complexes have been prepared and characterized by the ligand to metal by molar conductance, spectral (UV-Visible and FT-IR), and atomic absorption studies. The IR spectral measurements forecast interference to oxygen, nitrogen in coordination from the electron pairs to the metal ion in the center. And suggested the complexes geometry be octahedral for all.

Synthesis and Characterization of a Novel Tetra-Substituted Zinc Phthalocyanine Compound

2012 ◽  
Vol 554-556 ◽  
pp. 640-643
Author(s):  
Wei Zhang ◽  
Wu Biao Duan ◽  
Zhen Xin Wang
Keyword(s):  
1H Nmr ◽  
Satisfactory Result ◽  
Nmr Spectra ◽  
Zinc Phthalocyanine ◽  
Synthesis And Characterization ◽  
Maldi Tof Ms ◽  
Step Procedure ◽  
Uv Visible ◽  
Tof Ms

A novel tetra-substituted zinc phthalocyanine 4 [ZnPcNHCOCH2(PEG)5NH2] was synthesized from 4-nitrophthalonitrile by using a four-step procedure. The compound has been characterized by UV–Visible, fluorescence, IR, 1H NMR spectra and MALDI-TOF MS, and the satisfactory result has been obtained. Most importantly, this compound is soluble in many solvents including CHCl3, CH2Cl2, DMF, DMSO, THF and water.

scholarly journals Synthesis and characterization of azo-guanidine based alcoholic media naked eye DNA sensor

2016 ◽  
Vol 3 (11) ◽  
pp. 160351 ◽  
Author(s):  
Ataf Ali Altaf ◽  
Uzma Hashmat ◽  
Muhammad Yousaf ◽  
Bhajan Lal ◽  
Shafiq Ullah ◽  
...  
Keyword(s):  
Binding Constants ◽  
Blue Shift ◽  
Dna Sensing ◽  
H Nmr ◽  
Naked Eye ◽  
Uv Visible ◽  
New Compounds ◽  
Synthesized Materials ◽  
Dna Binding Properties

DNA sensing always has an open meadow of curiosity for biotechnologists and other researchers. Recently, in this field, we have introduced an emerging class of molecules containing azo and guanidine functionalities. In this study, we have synthesized three new compounds ( UA1 , UA6 and UA7 ) for potential application in DNA sensing in alcoholic medium. The synthesized materials were characterized by elemental analysis, FTIR, UV-visible, 1 H NMR and 13 C NMR spectroscopies. Their DNA sensing potential were investigated by UV-visible spectroscopy. The insight of interaction with DNA was further investigated by electrochemical (cyclic voltammetry) and hydrodynamic (viscosity) studies. The results showed that compounds have moderate DNA binding properties, with the binding constants range being 7.2 × 10 3 , 2.4 × 10 3 and 0.2 × 10 3  M −1 , for UA1 , UA6 and UA7 , respectively. Upon binding with DNA, there was a change in colour (a blue shift in the λ max value) which was observable with a naked eye. These results indicated the potential of synthesized compounds as DNA sensors with detection limit 1.8, 5.8 and 4.0 ng µl −1 for UA1 , UA6 and UA7 , respectively.

Synthesis and characterization of bis-[PcRu(CO)][Ru2(ap)4(C≡CC5H4N)2]

2014 ◽  
Vol 18 (01n02) ◽  
pp. 49-57 ◽  
Author(s):  
Machima Manowong ◽  
Eric Van Caemelbecke ◽  
M. Salomé Rodríguez-Morgade ◽  
John L. Bear ◽  
Karl M. Kadish ◽  
...  
Keyword(s):  
Title Compound ◽  
Ruthenium Complex ◽  
Aqueous Media ◽  
Spectroscopic Properties ◽  
Electronic Interaction ◽  
Axial Coordination ◽  
H Nmr ◽  
Metal Metal ◽  
Uv Visible

A tetra-ruthenium complex containing two ruthenium(II) phthalocyanines and one metal–metal bonded diruthenium(III,III) unit was synthesized and investigated as to its electrochemical and spectroscopic properties in non-aqueous media. The title compound, represented as bis-[ PcRu ( CO )]-[ Ru 2( ap )4( C ≡ CC 5 H 4 N )2], where ap = 2-anilinopyridinate anion and Pc = the dianion of tetra-tert-butylphthalocyanine, was assembled by axial coordination of two PcRu ( CO ) macrocycles to pyridine groups of the complex which were themselves linked to the diruthenium(III,III) unit via alkyne groups. The tetra-ruthenium complex was characterized in solution and in the solid state by 1 H NMR, UV-visible and IR spectroscopies, mass spectrometry and cyclic voltammetry while thin-layer UV-visible spectroelectrochemistry was used to study the site of electron transfer. Eight redox processes occur in CH 2 Cl 2 or benzonitrile, four of which can be assigned to the macrocycles of PcRu ( CO ) and four to the central diruthenium unit of the molecule. The electrochemical and spectroscopic data suggest a weak electronic interaction between the diruthenium unit of [ Ru 2( ap )4( C ≡ CC 5 H 4 N )2] and the two externally linked Ru ( II ) phthalocyanines of the title compound.

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