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1.
Süleyman Gürsoy Ali Cihan Makbule B. Koçak Özer Bekaroğlu 《Monatshefte für Chemie / Chemical Monthly》2001,132(8):967-972
Summary. A new soluble vic-dioxime 1,4-(isobutyl)-2,3-bis-(hydroxyimino)-5,6-phenylpiperazine was prepared as a mixture of isomers from anti-dichloroglyoxime and N,N′-bis-(isobutyl)-stilbendiamine which reacts to N,N′-coordinated planar metal complexes with Ni(II), Cu(II), Co(II), and Pd(II).
Oxidation of the Co(II) complex in the presence of pyridine leads to an octahedral complex containing pyridine and chloride
as axial ligands in addition to the vic-dioxime ligands. The uranyl complex has a 1:1 metal:ligand ratio and a dinuclear structure with μ-hydroxo bridges.
Received November 14, 2000. Accepted (revised) January 23, 2001 相似文献
2.
Bilge Taner Pervin Deveci Emine ?zcan Ali Osman Solak 《Journal of inclusion phenomena and macrocyclic chemistry》2012,74(1-4):391-396
A new calix[4]pyrrole functionalized vic-dioxime, 3-(4-methyl-9,9,14,14,19,19-hexaethylcalix[4]pyrrole)benzoaminoglyoxime (LH2) was synthesized from anti-chloroglyoxime and 3-aminophenyl-calix[4]pyrrole at room temperature. The mononuclear complexes {nickel(II), copper(II) and cobalt(II)} of this vic-dioxime ligand were prepared and their structures were confirmed by elemental analysis, IR and UV–Vis spectrophotometry, magnetic susceptibility; the MS, 1H and 13C NMR spectra of the LH2 ligand and its Ni(II) complex were also recorded. The experimental results indicated that the ligand:metal ratio was 2:1 in the cases of Ni(II), Cu(II) and Co(II) complexes as is with most vic-dioximes. Electrochemical properties of the ligand, and its complexes were investigated in DMSO solution by cyclic voltammetry at 200?mV?s?1 scan rate. 相似文献
3.
《Journal of Coordination Chemistry》2012,65(17):3083-3092
A new vic-dioxime ligand containing benzophenone hydrazone units, N′-(benzophenone hydrazone)glyoxime [LH2] has been prepared from benzophenone hydrazone and anti-chloroglyoxime in absolute ethanol. Mononuclear nickel(II), cobalt(II), copper(II), zinc(II), and cadmium(II) complexes were also synthesized. Ligand and complexes were characterized by elemental analyses, FT-IR, 1H NMR, and 13C NMR spectroscopy, magnetic moments, and DTA/TG techniques. On the basis of the magnetic and spectral evidences a square-planar geometry for Ni(II) and Cu(II) complexes, tetrahedral for Cd(II) and Zn(II) complexes, and octahedral for Co(II) complex were proposed. Redox behaviors of ligand and its complexes were also investigated by cyclic voltammetry at the glassy carbon electrode. 相似文献
4.
Esin Hamuryudan Zehra A. Bayr ?zer Bekaro?lu 《Monatshefte für Chemie / Chemical Monthly》2000,5(4):175-180
A new vic-dioxime ligand, N,N′-bis-(8-salicylideneimino-1-naphthyl)-diaminoglyoxime, has been synthesized from anti-dichloroglyoxime and 1-amino-8-salicylideneiminonaphthalene which has been prepared via the condensation product of 1,8-diaminonaphthalene and salicylaldehyde. The vic-dioxime ligand forms trinuclear complexes with Cu(II), Ni(II), Co(II), and Pd(II). The uranyl complex of this ligand has a 2:1 metal-ligand ratio and a binuclear structure with μ-hydroxo bridges. 相似文献
5.
Pervin DeveciBilge Taner Zeynel K?l?çAli Osman Solak U?ur ArslanEmine Özcan 《Polyhedron》2011,30(10):1726-1731
This paper presents a new azacrown containing vic-dioxime; anti-N-(4-aminophenyl)aza-15-crown-5-glyoxime (LH2), and its mononuclear nickel(II), copper(II), cobalt(II), cadmium(II) and zinc(II) complexes. The azacrown moieties appended at the periphery of the oxime provide solubility for the vic-dioxime ligand and complexes in common organic solvents. The mononuclear M(LH)2 (M = Ni and Cu), M(LH)2(H2O)2 (M = Co) and [M(LH)(H2O)(Cl)] (M = Cd and Zn) complexes have been obtained with the metal:ligand ratios of 1:2 and 1:1. The structure of the ligand is confirmed by elemental analysis, Fourier transform infrared (FT-IR), ultraviolet-visible (UV-Vis), mass spectrometry (MS), one-dimensional (1D) 1H, 13C NMR, distortionless enhancement by polarization transfer (DEPT) and two-dimensional (2D) heteronuclear single quantum coherence (HSQC) and heteronuclear multiple bond correlation (HMBC) techniques. The structures of the complexes are confirmed by elemental analyses, MS, UV-Vis, FT-IR and 1H, 13C NMR techniques. Redox behaviors of the ligand and its complexes have been investigated by cyclic voltammetry at the glassy carbon electrode in 0.1 M TBATFB in DMSO. The antibacterial activity was studied against Staphylococcus aureus ATCC 29213, Streptococcus mutans RSHM 676, Enterococcus faecalis ATCC 29212, Lactobacillus acidophilus RSHM 06029, Escherichia coli ATCC 25922, Pseudomonasaeruginosa ATCC 27853. The antimicrobial test results indicate that all the complexes have low levels of antibacterial activity against both Gram negative and Gram positive bacterial species. 相似文献
6.
《Journal of Coordination Chemistry》2012,65(8):1172-1183
The synthesis of a new vic-dioxime ligand, N,N′2-dihydroxy-O 1,O 2-bis(4-methyl-2-oxo-2H-chromen-7-yl)oxalimidamid (LH2) (1), bearing functional coumarins and its soluble mono- {Ni(II), Cu(II), Co(II)} and dinuclear {UO2(II)} complexes are presented. The fluorescence properties due to the 7-hydroxy-4-methylcoumarin fluorophore, which is conjugated with vic-dioxime that functions as the MN4 core of 1 and its complexes, are also reported. The formation of coordination complexes resulted in the blue shift in excitation spectrum and fluorescence quenching of 1. Both mononuclear {(LH)2M, M=Ni(II), Cu(II), and Co(II)} and homodinuclear {(LH)2(UO2)2(OH)2)} complexes have been obtained with metal?:?ligand ratios of 1?:?2 and 2?:?2, respectively. The characterizations of the new compounds were made by elemental analysis, 1H-NMR, FT-IR, UV-Vis, and LCMS data. Redox behavior of 1, involving oxime and coumarin moieties, and its complexes with Ni(II), Cu(II), Co(II) and UO2(II) were investigated by cyclic voltammetry. The comparison of the electrochemical behavior of 1 with its complexes enabled us to identify metal-, oxime- and coumarin-based signals. 相似文献
7.
《Journal of Coordination Chemistry》2012,65(2):359-368
Abstract A new soluble vic-dioxime, l,4-bis(2-methoxyethyl-2, 3-bis(hydroxyimino)-5, 6-diphenylpiper-azine (LH2) has been synthesized as a mixture of isomers from dicyan di-N-oxide and 1, 2-diphe-nyl-l,2-bis(2′-methoxyethylamino)ethane, 1, which has been prepared through the reduction of the condensation product of benzaldehyde and 2-methoxyethylamine with the aluminium amalgam. LH2 gives N,N-coordinated planar metal complexes with CoII, NiII, CuII and PdII Oxidation of (LH)2Co in the presence of a base such as py or triphenylphoshine leads to octahedral complexes (LH)2Co(B)Cl. The uranyl complex of LH2 has a 1 :1 metal-ligand ratio and a binuclear structure with μ-hydroxo bridges. 相似文献
8.
Meryem Çamur Mustafa Bulut Ali R. Özkaya Mehmet Kandaz Nurettin Yaylı 《Transition Metal Chemistry》2007,32(5):642-648
A new vic-dioxime bearing coumarin functionality, N′1,N′2-Dihydroxy-N
1,N
2-bis(4-methyl-2-oxo-2H-chromen-7-yl)oxalimidamid (LH2), N,N-bis-[4-methylcoumarinyl]-diamino glyoxime (LH2), and its mono- and dinuclear complexes {copperII, cobaltII, nickelII and uranylII} have been reported. The fluorescence excitation and emission spectra of LH2 and its complexes with metal ions were examined. It was observed that fluorescence and excitation emission intensity of LH2 was quenched depending on complex formation with metal ions. The characterizations of all newly synthesized compounds were
made by elemental analysis, 1H-n.m.r, i.r., u.v.–vis., and l.c-m.s./m.s. data. Electrochemical behaviour of the ligand involving oxime and coumarine moieties,
and its complexes with NiII, CuII, CoII and UO
2
II
were investigated by cyclic voltammetry. The comparison of the electrochemical behaviour of the ligand with its complexes
enabled us to identify metal-, oxime- and coumarine-based signals. 相似文献
9.
Azza A. Shoukry Mahmoud M. A. Mohamed Mohamed M. Shoukry 《Journal of solution chemistry》2006,35(6):853-868
Binary and ternary complexes of copper(II) involving N,N,N′,N′-tetramethylethylene-diamine (Me4en) and various biologically relevant ligands containing different functional groups are investigated. The ligands (L) used are dicarboxylic acids, amino acids, peptides and DNA unit constituents. The ternary complexes of amino acids, dicarboxylic acids or peptides are formed by simultaneous reactions. The results showed the formation of Cu(Me4en)(L) complexes with amino acids and dicarboxylic acids. The effect of chelate ring size of the dicarboxylic acid complexes on their stability constants was examined. Peptides form both Cu(Me4en)(L) complexes and the corresponding deprotonated amide species Cu(Me4en)(LH−1). The ternary complexes of copper(II) with (Me4en) and DNA are formed in a stepwise process, whereby binding of copper(II) to (Me4en) is followed by ligation of the DNA components. DNA constituents form both 1:1 and 1:2 complexes with Cu(Me4en)2+. The concentration distribution of the complexes in solution was evaluated. [Cu(Me4en)(CBDCA)] and [Cu(Me4en)(malonate)] are isolated and characterized by elemental analysis and infrared measurements. 相似文献
10.
A novel vic-dioxime ligand containing the thiourea group, (4E,5E)-1,3-bis{4-[(4-methylphenylamino)methyl] phenyl}- 2-thiooxaimidazoline-4,5-dione dioxime, (4) mmdH2 has been prepared from N,N′-bis{4-[(4-methylphenylamino)methyl]phenyl}thiourea, (3) mft and cyanogen di-N-oxide. Mononuclear [M(mmdH)2], where M = NiII, CoII and CuII complexes of the (4) mmdH2 bidentate ligand have been obtained with a 1:2 metal:ligand ratio, as do most the vic-dioximes. The complexes are formed by coordination of N, N atoms of the ligand. The vic-dioxime ligand and its some transition metal complexes have been characterized by elemental analyses, molar conductance data,
magnetic susceptibility, i.r., 1H-n.m.r and u.v.–vis. spectroscopy. Conductivity measurements have shown that mononuclear complexes are non-electrolytes.
In addition, the ligands and metal complexes were screened for antibacterial and antifungal activities by agar well diffusion
techniques using DMF as solvent. 相似文献
11.
Emin Karapinar 《Journal of inclusion phenomena and macrocyclic chemistry》2005,53(3):171-175
N′-(4′-Benzo[15-crown-5]naphthylaminoglyoxime (H2L) and its sodium chloride complex (H2L·NaCl) have been prepared from 2-naphthylchloroglyoxime, 4′-aminobenzo[15-crown-5] and sodium bicarbonate or sodium bicarbonate and sodium chloride. Nickel(II), cobalt(II) and copper(II) complexes of H2L and H2L·NaCl have a metal–ligand ratio of 1:2 and the ligand coordinates through the two N atoms, as do most of the vic-dioximes. The BF2+-capped Ni(II), Co(III) and mononuclear complexes of thevic-dioxime were prepared. The macrocyclic ligands and their transition metal complexes have been characterized on the basis of IR, 1H NMR spectroscopy and elemental analyses data. 相似文献
12.
The tripodal ligand N,N′,N″-tri(benzimidazolyl)-methane has been used to synthesize nickel(II) complexes along with an exogeneous
ligand, X(X = Cr−,NO
3
−
,ClO
4
−
, HCOO−, OAc− and CNS−). Electronic absorption spectra reveal that the present nickel(II) complexes have six coordinate tetragonal geometries. The
value of Racah parameter(B), crystal field splitting parameter (Dq) and term,β0 (which is a measure of covalency) have been calculated.1HNMR spectroscopy reveals a dominantσ-delocalization pattern in these complexes. 相似文献
13.
Three new vic-dioxime ligands, [N-(ethyl-4-amino-1-piperidine carboxylate)-phenylglyoxime (L1H2), N-(ethyl-4-amino-1-piperidine carboxylate)-glyoxime (L2H2), and N,N′-bis(ethyl-4-amino-1-piperidine carboxylate)-glyoxime (L3H2)], and their Co(II) with Cu(II) metal complexes, were synthesized for the first time. Mononuclear complexes of these ligands
with a 1:2 metal-ligand ratio were prepared with Co(II) and Cu(II) salts. The BF2+-capped Co(II) and mononuclear complexes of the vic-dioxime were prepared for [Co(L1·BF2)2] and [Co(L2·BF2)2]. The ligands act in a polydentate fashion bonding through nitrogen atoms in the presence of a base, as do most vic-dioximes. The cobalt(II) and copper(II) complexes are non-electrolytes as shown by their molar conductivities (ΛM) in DMF. The structures of the ligands and complexes were determined by elemental analyses, FT-i.r., u.v.–vis., 1H- and 13C-n.m.r. spectra, magnetic susceptibility measurements, and molar conductivity. The comparative electrochemical studies show
that the stabilities of the reduced or oxidized species and the electrode potentials of the complexes are affected by the
substituents attached on the oxime moieties of the complexes. 相似文献
14.
The new Co(II), Cu(II), Ni(II) and Zn(II) complexes of potentially N2O2 Schiff base ligand [N,N’-bis(salicyldehydene)-1,4-bis-(o-aminophenoxy)butane] (H2L) prepared from 1,4-bis-(o-aminophenoxy)butane and salicyldehyde in DMF. Microanalytical data, elemental analysis, magnetic measurements, lH NMR, 13C NMR, UV-visible and IR spectra as well as conductance measurements were used to confirm the structures. In all complexes,
H2L behaves as a tetradentate.
The article is published in the original. 相似文献
15.
《Journal of Coordination Chemistry》2012,65(3):425-432
Abstract A novel dioxime, 1,2 dihydroxyimino-3,7-diaza-9,10-O-benzaloctane (LH2) was prepared by reaction of l,2-0-benzylidene-4-aza-7-aminoheptane and anti-phenylchloroglyoxime in absolute ethanol. Mononuclear complexes with a metal-ligand ratio of 1:2 were prepared with Co(II), Cu(II) and Ni(II). To elucidate the structures of the ligand and complexes, elemental analyses, IR, 1H NMR and 13C NMR spectral data and magnetic susceptibility measurements have been examined. 相似文献
16.
《Journal of Coordination Chemistry》2012,65(12):1419-1426
In this study, 1,2-dihydroxyimino-3,7-di-aza-9,10-O-α-methyl benzal decane (LH2) was synthesized starting from 1,2-O-α-methyl benzal-4-aza-7-amino heptane (RNH2) and antichloroglyoxime. With this ligand, complexes were synthesized using Ni(II) and Cu(II) salts with a metal:ligand ratio of 1:2. However, the reaction of the ligand with salts of Zn(II) and Cd(II) gave products with metal:ligand ratio of 1:1. Structures of the ligand and its complexes are proposed based on elemental analyses, IR, 13C- and 1H-NMR spectra, magnetic susceptibility measurements and thermogravimetric analyses (TGA). 相似文献
17.
Mükerrem Kurtoğlu Esin İspir Nurcan Kurtoğlu Sevil Toroğlu Selahattin Serin 《Transition Metal Chemistry》2005,30(6):765-770
A new tetraoxime ligand, (2E, 3E, 9E, 10E)-1, 4, 8, 11-tetraazacyclotetradecane-2, 3, 9, 10-tetrone tetraoxime has been prepared by the template condensation of 1,3-propanediamine and cyanogen-di-N-oxide, obtained by treating (E, E)-dichloroglyoxime in CH2Cl2 with Na2CO3 at −10 °C. The coordination chain polymers {[(pnngH2)2Ni]n (5) and [(pncgH2)2Cu]n(6)} of two transition metal ions, [Ni(II) and Cu(II)] with the vic-dioxime ligand have been prepared. The oxime ligand acts as a polydentate ligand bending through nitrogen atoms in the presence of a base, as do most of the vic-dioximes. In the complexes, the chloride ions coordinate to the nickel and copper ions. The structures of these novel vic-dioxime compounds are proposed on the basis of the elemental analyses, molar conductance data, i.r., and U.v.–visible are presented. Elemental analyses indicate a ligand metal ratio of 1:1 in the coordination polymers. Conductivity measurements have shown that mono- and polynuclear complexes are non-electrolytes. In addition, anti-microbial activities of the compounds have been investigated. 相似文献
18.
《Journal of Coordination Chemistry》2012,65(18):3050-3059
vic-Dioxime ligands (LH2) containing branched alkylthioether chains of different length have been prepared from (E,E)-dichloroglyoxime and corresponding thiol derivatives. Mononuclear Ni(II) complexes (5a–5c) were synthesized in ethanol by reacting NiCl2 · 6H2O with new ligands (4a–4c) in the presence of KOH. Branched alkylthioether moieties appended at the periphery of the oxime provide solubility for the vic-dioxime complexes in common organic solvents. The compounds have been characterized by elemental analyses, FT-IR and UV-Vis spectroscopy, 1H- and 13C-NMR, and ESI-Mass spectrometry. While 5a and 5b are solid at room temperature, 5c is obtained as an orange viscous liquid. The thermal stabilities of the complexes were determined by thermogravimetric analysis. 相似文献
19.
Gürsoy Süleyman Koçak Makbule Cihan Ali Gül Ahmet Bekaroğlu Özer 《Transition Metal Chemistry》2000,25(4):474-477
A new soluble vic-dioxime ligand namely 1,4-bis(2′-hydroxyethyl)-2,3-bis(hydroxyimino)-5,6-diphenylpiperazine, (LH2) containing optically active centers has been prepared as a mixture of isomers from (CNO)2 and N,N-bis(2-hydroxyethyl)stilbendiamine (1) which has been made by the reduction of the condensation of the product of benzaldehyde and 2-aminoethanol in the presence
of aluminum amalgam. N,N-coordinated planar metal complexes of this ligand have been synthesized with NiII, CuII, CoII, PdII and UVIO2. Oxidation of (LH)2Co in the presence of a base, such as pyridine, leads to an octahedral complex (LH)2CopyCl containing pyridine and chloride as axial ligands in addition to vic-dioxime ligands. The structures of the ligand and its complexes are proposed on the basis of elemental analysis, 1H-n.m.r., mass, i.r. and u.v.–vis. spectral data.
This revised version was published online in June 2006 with corrections to the Cover Date. 相似文献