The synthesis and spectroscopic characterization of Ni(II) complexes of 1-substituted phenyl-3,5-diphenylformazans

Tezcan, Habi̇be; Uzluk, Elif

doi:10.1016/j.dyepig.2007.09.003

Cited by 5 publications

(10 citation statements)

References 17 publications

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“…The N=N bands observed at 1405-1398 cm −1 in the formazans (1 and 2) and were observed to shift to 1249-1267 cm −1 and 1267-1272 cm −1 in M(II) complexes. The results are consistent with the literature [8,25]. The C=O stretching band was observed at 1682 cm −1 for -COOH group in formazan 1, but it was shifted to lower frequencies (1591-1603 cm −1 ) in M(II) complexes [26][27].…”

Section: Ir Spectrasupporting

confidence: 92%

“…The IR spectral data of formazans and metal coplexes were listed in Table 3. One can find out from this Table 3, that the C=N stretching bands were found at 1530, 1543 cm -1 and the N-H bands were observed at 3367, 3345 cm -1 respectively for the formazans (1 and 2) but they were not observed in the complexes [ 8,25 ]. These results confirm the formula which is depicted in Scheme 1.…”

Section: Ir Spectrasupporting

confidence: 80%

“…Formazans forms complexes with a variety of metal ions. These complexes are formed by coordinating metal atom to 1 and 5 positions of the formazans [5][6][7][8][9][10][11][12][13]. The metal complexes of formazans are used widely on textile substrates since they provide shades of high fastness to light, They are also used in paint industries [14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

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Synthesis of Metal Complexes of Some Formazans Obtaining From Cinnamaldehyde and Investigation of Their Dyeing Properties Using Different Methods

Sarikavakli¹,

Erol²

2018

European Journal of Science and Technology

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In this study, two formazans were synthesized by coupling cinnamaldehyde phenyl hydrazone obtained by activation of cinnamaldehyde with phenylhydrazone, with diazonium salts of anthranilic acid and sulfonilic acid. The complexes of Co +2 , Ni +2 , Cu 2+ salts of these formazans were also synthesized. These compounds were characterized by elemental analysis, infrared (IR), ultraviolet-visible (UV-vis), 1 H nuclear magnetic resonance (1 H-NMR) and 13 C-NMR spectral data. Investigation of these compounds as dyes were studied. In the present experimental approach, two methods were employed; The first one was direct dyeing with these complexes, and the other one was complex formation on the fibres. Finally fastness values (test) were calculated and significantly higher values are obtained.

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Section: Ir Spectrasupporting

confidence: 92%

Section: Ir Spectrasupporting

confidence: 80%

Section: Introductionmentioning

confidence: 99%

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Synthesis of Metal Complexes of Some Formazans Obtaining From Cinnamaldehyde and Investigation of Their Dyeing Properties Using Different Methods

Sarikavakli¹,

Erol²

2018

European Journal of Science and Technology

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“…25 The spectrum showed two broad bands in the 3300-3550 cm -1 and 2550-3000 cm -1 ranges which may be assigned to the stretching vibration of the phenolic hydroxyl groups associated through intra-and intermolecular hydrogen bonding. 23 The relatively strong and medium bands located at 1605, 1468 and 1004 cm -1 corresponded to the azomethine group, 26 the azo group 27 and ν(N-N), 23 respectively. The band which appeared at 1289 cm -1 is due to the ν(C-OH) of the phenolic moiety.…”

Section: Infrared Spectramentioning

confidence: 99%

Metal complexes of N'-(2-hydroxy-5-phenyldiazenyl) benzylideneisonicotinohydrazide: Synthesis, spectroscopic characterization and antimicrobial activity

El‐Tabl

Shakdofa

2013

JSCS

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A new series of Cu(II), Ni(II), Co(II), Mn(II), Zn(II), Cd(II), Hg(II) , VO(II), UO2(II) , Fe(III) and Ru(III) complexes of N'-(2-hydroxy-5- phenyldiazenyl)benzylideneisonicotinohydrazide(H2L) have been synthesized and characterized by elemental,1H-NMR, IR, UV-Vis., ESR, magnetic, thermogravimetric analyses(TG) and conductivity measurements. The spectral data show that, the ligand behaves as a neutral bidentate, (2), (4), (5), (6) and (14), monobasic bidentate, (3), (7), (8), (9) and (10), monobasic tridentate (11) and (16) or dibasic tridentate (12), (13) and (15) bonded to metal ions via the carbonyl oxygen atom in ketonic or enolic form, azomethine nitrogen atom and/or deprotonated phenolic hydroxyl oxygen. The ESR spectrum of solid vanadyl(II), complex (2) shows axially anisotropic spectrum with eight lines in the low field region and g?>g||, A||>>A?relationship, which is characteristics of distorted octahedral structure with dxy ground state. However, copper(II) complexes (4), (5) and (6) and manganese(II) complex (10) show an isotropic type while the copper(II) complexes (3) and (7)show an axial symmetry type with g||>g?>ge indicating a covalent bond character. The antibacterial and antifungal activities of the ligand and its metal complexes show mild activity compared with standard drugs (Tetracycline for bacteria and amphotricene B for fungi)

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“…Red formazan molecules have hydrogen bridge show chelate, and the yellow shows non‐chelate form . Formazans create complexes and salts with transition metal ions such as Zn, Co, Cu, Fe, Mn, and Pd(II) . Formazans are easily oxidized to colorless tetrazolium salts, and tetrazolium salts are reduced back to formazans by enzymes in the cell and stain the tissue.…”

Section: Introductionmentioning

confidence: 99%

Discovery of Novel D‐A and D‐π‐A Structured Carbazole‐Based Formazan Dyes: Synthesis, Characterization, and Spectroscopic Studies

Hızlıateş

2019

Journal of Heterocyclic Chem

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In the current study, new carbazole‐based formazan dyes, D‐A and D‐π‐A, were synthesized, and their spectroscopic properties were studied for the first time. For this aim, carbazole aldehyde compounds were modified by the derivatization of carbazole, a natural electron‐donor compound, from 3‐ and 9‐position. Then, hydrazone derivatives were synthesized from these aldehyde derivatives. Finally, D‐A (5A–C) and D‐π‐A (6A–C) carbazole–formazan dyes were obtained by the interaction of the hydrazone compounds with p‐substituted aniline. After characterization of the structures of these compounds, photophysical properties of the carbazole–formazans were studied in the different polarity media (i.e., acetonitrile, toluene, and chloroform) in order to detect the solvent effects. Because of the π‐conjugated bridge and the electron acceptor nitro group at the para position, D‐π‐A structured carbazole–formazan dye 6C showed the highest Stokes shift of 155 nm.

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The synthesis and spectroscopic characterization of Ni(II) complexes of 1-substituted phenyl-3,5-diphenylformazans

Cited by 5 publications

References 17 publications

Synthesis of Metal Complexes of Some Formazans Obtaining From Cinnamaldehyde and Investigation of Their Dyeing Properties Using Different Methods

Synthesis of Metal Complexes of Some Formazans Obtaining From Cinnamaldehyde and Investigation of Their Dyeing Properties Using Different Methods

Metal complexes of N'-(2-hydroxy-5-phenyldiazenyl) benzylideneisonicotinohydrazide: Synthesis, spectroscopic characterization and antimicrobial activity

Discovery of Novel D‐A and D‐π‐A Structured Carbazole‐Based Formazan Dyes: Synthesis, Characterization, and Spectroscopic Studies

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