SYNTHESIS, STRUCTURE AND PROPERTIES OF COMPLEXES Cu(II)  Co (II), Ni(II), VO(II) WITH (3,5-DITRETBUTYL-2-HYDROXYBENZYL)-2-HYDROXYBENZOYL-HYDRAZIDE

Fatullayeva, P.A.

doi:10.32737/2221-8688-2018-4-519-523

Cited by 4 publications

(3 citation statements)

References 10 publications

(10 reference statements)

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“…The ligand and complexes of Cu(II) with (E)-N ′ (3,5-di-tert-butyl-2-hydroxybenzilidene)-2-hydroxybenzohydrazide showed the highest fungicidal activity. They can be used as antimicrobial additives for cutting uids [22,32,33].…”

Section: Cu1-o(1)mentioning

confidence: 99%

Copper(II) Complex with (E)-N ′ (3,5-di-tert-butyl-2-hydroxybenzilidene)-2-Hydroxybenzohydrazide

Fatullayeva,

Medjidov,

Ismayilov

et al. 2023

Preprint

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Annotation A mononuclear complex of copper(II) with (E)-N′(3,5-di-tert-butyl-2-hydroxybenzilidene) -2-hydroxybenzohydrazide (H3sahz)2 was synthesized. The structure of the complex [Cu(H2sahz)(DMF)] was studied by elemental analysis, IR and EPR spectroscopy, and monocrystal X-ray analysis. It was shown that the complex has a square planar structure, in which the ligand is tridentate and dianionic. The coordination of the Cu(II) ion is carried out by the oxygen atom of the ditertbutyl fragment, the azomethine nitrogen atom, the hydrazide oxygen atom in the enol form, and the oxygen of the DMF molecule. In aqueous solutions, the DMF molecule in the complex is easily exchanged for a water molecule. The obtained ligand and complex possess high bactericidal and fungicidal activity. The results of these studies indicated that the metal complexes exhibit a stronger antibacterial and antifungal efficiency than their corresponding Schiff base ligands.

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Section: Cu1-o(1)mentioning

confidence: 99%

Copper(II) Complex with (E)-N ′ (3,5-di-tert-butyl-2-hydroxybenzilidene)-2-Hydroxybenzohydrazide

Fatullayeva,

Medjidov,

Ismayilov

et al. 2023

Preprint

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“…In the electronic spectra of the vanadyl complex, several absorption bands are observed at 300 nm (inflection), ~625 nm (inflection), and 780 nm, which can be attributed to d-d transitions of the VO 2+ ion in the low symmetry ligand environment (Fig. 6) [19][20][21][22] The thermogravimetric analysis of the[CuL(H 2 O) 2 ] complex occurred in 4 stages. In the range of 157-230°C, weight loss is observed due to the removal of water (loss of two molecules of coordinated water per formula unit is 9.15% (calculation) and 8.10% (experiment) (Fig.…”

Section: (21)mentioning

confidence: 99%

SYNTHESIS OF COMPLEXES OF Cu(II) AND VO(IV) WITH HYDRAZIDE OF MALEIC AND HYDRAZINEDIACETIC ACID

Guliyeva,

Fatullayeva,

Jalaladdinov

et al. 2023

Chemical Problems

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The work demonstrated that hydrazide of maleic and hydrazine diacetic acid(L-2,2'-(2-(3- carboxyacryloyl)hydrazine-1,1-diil)diacetic acid) forms mononuclear complexes [CuL(H2O)2] and [VОL(H2O)2]. The structure and physical properties of these complex compounds have been studied by IR, UV spectroscopy and thermogravimetric methods of analysis. On the basis of the data obtained, the structure of the complexes was proposed, in which the metal ion is coordinated by two oxygen atoms and one nitrogen atom of the aminodiacetic fragment. In the electronic spectra of the copper complex, there are absorption bands of the transition at ~240 nm (related to charge transfer) and one d-d transition 740 nm. In the electronic spectra of the vanadyl complex, several absorption bands are observed at 300 nm (inflection), ~625 nm (inflection), and 780 nm, which can be attributed to d–d transitions of the VO2+in the low symmetry ligand environment. The five-coordinated structure of the complex is carried out by two oxygen atoms of two water molecules. The EPR spectrum of the polycrystalline [CuL(H2O)2] complex at room temperature indicates a low symmetry of the complex and has three g -factor values: g1=2.30, g2=2.22; g3=2.11. Additionally, a hyperfine structure is observed due to 63.64Cu nuclei (nuclear spin 3/2) with a splitting constant of 80 G.

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“…In this case, metal complexes with hydrazones reduced on the azomethine group can be of considerable interest. Earlier, we studied complexes with schiff bases hydrogenated at the azomethine group obtained from salicylic acid hydrazide and 3,5-ditretbutyl salicylic aldehyde [12].In this work, we synthesized and studied complexes of manganese and iron with dihydrazone derivatives of succinic acid dihydrazide and sterically hindered salicyl aldehyde-3,5-ditret-butyl salicylic and its reduced analog.…”

Section: Introductionmentioning

confidence: 99%

Complexes of Metals With Dihydrazones of Succinic Acid Dihydrazide

Fatullayeva¹

2019

Chemical Problems

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Bis-(3,5-di-tert-butyl-salicylidene) dihydrazone of succinic acid dihydrazide was synthesized and its analogue-reduced azomethine bond. The complexes of Mn (II) and Fe (II) with these ligands were obtained. Based on the data of IR-, electron spectroscopy and elemental analysis, of the obtained complexes is assumed the binuclear structure. The possibility of catalytic reduction of the azomethine bond with NaBH 4 to the corresponding succinic acid bis-(2-hydroxybenzyl) succinic dihydrazide was shown. It was found that all obtained compounds have high bactericidal and fungicidal activities.

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SYNTHESIS, STRUCTURE AND PROPERTIES OF COMPLEXES Cu(II) Co (II), Ni(II), VO(II) WITH (3,5-DITRETBUTYL-2-HYDROXYBENZYL)-2-HYDROXYBENZOYL-HYDRAZIDE

Cited by 4 publications

References 10 publications

Copper(II) Complex with (E)-N ′ (3,5-di-tert-butyl-2-hydroxybenzilidene)-2-Hydroxybenzohydrazide

Copper(II) Complex with (E)-N ′ (3,5-di-tert-butyl-2-hydroxybenzilidene)-2-Hydroxybenzohydrazide

SYNTHESIS OF COMPLEXES OF Cu(II) AND VO(IV) WITH HYDRAZIDE OF MALEIC AND HYDRAZINEDIACETIC ACID

Complexes of Metals With Dihydrazones of Succinic Acid Dihydrazide

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