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1.
In this study, four different new vic-dioximates, [L1H2] N-(4-ethylphenyl)amino-biphenylglyoxime, [L2H2] N-(4-butylphenyl)aminobiphenylglyoxime, [L3H2] N-(4-aminoacetanilide)aminobiphenylglyoxime, and [L4H2] N-(thiazol-2-yl-aminobiphenylglyoxime are synthesized from anti-4′-biphenylchloroglyoxime and the corresponding substituted aromatic amines. The Co(II), Ni(II), and Cu(II) complexes of
these ligands are prepared. The structures of these new ligands and their complexes are proposed based upon IR, 1H, and 13C NMR spectral data, mass spectroscopy, magnetic susceptibility measurement, and elemental analyses.
The text was submitted by the authors in English. 相似文献
2.
Metal-assisted template syntheses of 5,10,15,20-tetraalkylchlorin and tetraalkylporphyrin complexes of transition metals are described. With Co only the porphyrins are obtained; with Cu only the chlorins; with Ni a mixture of chlorin and porphyrin is obtained depending on alkyl and added anhydride. As opposed to the higher alkyls, (5,10,15,20-tetramethylporphyrinato)nickel(II) dimerizes in solution, a dimerization constant of 3.9 ± 1.3 M?1 being derived from 1H nmr data. 相似文献
3.
Lucica Viorica Ababei Angela Kriza Cristian Andronescu Adina Magdalena Musuc 《Journal of Thermal Analysis and Calorimetry》2012,107(2):573-584
Ten new mononuclear complexes having general formulae [ML2](ClO4)2, M = Cu(II), Co(II), Ni(II), Mn(II) and Zn(II), [ML2](SO4), M = Co(II), Ni(II) and [ML2(H2O)2](SO4), M = Cu(II), Mn(II) and Zn(II), L = 2-acetyl-pyridyl-isonicotinoylhydrazone have been synthesized and characterized based
on elemental analyses, IR spectroscopy, UV–Vis–NIR, EPR, as well as thermal analysis and determination of molar conductivity
and magnetic moments. The structures of [CoL2](ClO4)2 are accomplished by single crystal X-ray diffraction. The coordination sphere is formed by two N, N, O tridentates 2-acetyl-pyridyl-isonicotinoylhydrazone
ligands, or by two N, O bidentate 2-acetyl-pyridyl-isonicotinoylhydrazone and two water molecules. Biological activity studies
reveal a moderate activity of complexes against gram-negative and gram-positive bacteria. 相似文献
4.
《Journal of Inorganic and Nuclear Chemistry》1978,40(1):171-174
Acetone isonicotinoyl hydrazone (AINH) has been found to form complexes of the types MCl2·AINH·nEtOH and M(AINH-H)2·nH2O where M Mn(II), Fe(II), Co(II), Ni(II), Cu(II) or Zn(II) and n 0, 1 or 2. CuICl·AINH has also been prepared starting with Cu(II) chloride. All the complexes are found to be non-electrolytes in pyridine. Tentative structural conclusions are drawn for these complexes based upon electronic spectral and room-temperature magnetic measurements. IR spectral studies suggest that AINH functions as a bi- or tridentate ligand in the complexes of the former type and as a tridentate one in the latter type of complexes. The positions of the v(M-O) mode in the low frequency IR spectra of the complexes have been correlated with their overall stability constants, log K. 相似文献
5.
Summary Acetone nicotinoyl hydrazone (ANII) complexes of the types M(ANH)Cl2 · nEtOH and M(ANH-H)2 H2O (where M = MnII FeII, CoII, NiII, CuII or ZnII and n = 0,1 or 2) have been prepared and their structures studied by molar conductance, i.r. and electronic spectra, and room temperature magnetic measurements. All the complexes arc nonionic in a 0.001 M solution of formic acid. Magnetic and electronic spectral studies show that all the complexes are spin-free regular or distorted octahedra except Mn(ANH)Cl2 and Co(ANH)CI2 which are tetrahedral. The distorted octahedral geometry of Cu(ANH-H)2 · H2O has also been confirmed from its sold state e.s.r spectrum at 77 K. From i.r. spectral studies, ANH has been found to act as a tridentate ligand in all the complexes except Mn(ANH)Cl2 where it behaves as a bidentate ligand. 相似文献
6.
M. G. Abd El Wahed K. A. El Manakhly A. Barakat A. M. Amer 《Monatshefte für Chemie / Chemical Monthly》1996,127(11):1115-1122
Summary The electrical behaviour of some hydrazones was studied in the temperature range of 290–435 K. The effect of complex formation with Mn(II), Fe(II), Co(II), Ni(II), and Cu(II) on the electrical conductivity of the hydrazones was investigated. The structure of the hydrazones was characterized using1H and13C NMR spectroscopy. Conductometric titration and IR spectroscopy were used to illustrate the structure of the hydrazone complexes. Both the structures of the hydrazones and the complexation process play an effective role in the conduction process.
Elektrische Leitfähigkeit einiger Hydrazone und ihrer binären Komplexe mit Übergangsmetallen
Zusammenfassung Das elektrische Verhalten einiger Hydrazone und ihrer Komplexe mit Mn(II), Fe(II), Co(II), Ni(II) und Cu(II) wurde im Temperaturbereich von 290 bis 435K untersucht. Die Strukturen der Hydrazone wurden mittels1H- und13C-NMR-Spektroskopie charakterisiert, jene ihrer Komplexe durch konduktometrische Titration und IR-Spektroskopie. Sowohl die Strukturen der Hydrazone als auch der Komplexbildungsvorgang spielen eine wesentliche Rolle beim Leitungsvorgang.相似文献
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Pugh D Wright JA Freeman S Danopoulos AA 《Dalton transactions (Cambridge, England : 2003)》2006,(6):775-782
The complexes [(C-N-C)MX(n)(thf)(m)] with the 'pincer' 2,6-bis(imidazolylidene)pyridine, (C-N-C) = 2,6-bis(arylimidazol-2-ylidene)pyridine, aryl = 2,6-Pr(i)2C6H3, M = V, X = Cl, n = 2, m = 1 1a; M = Cr, X = Cl, n = 2, m = 0, 2a, X = Br, 2b; M = Mn, X = Br, n = 2, m = 0, 3; M = Nb, X = Cl, n = 3, m = 0, 4; and M = U, X = Cl, n = 4, m = 0, 5, were synthesised by (a) substitution of labile tmed (1a), thf (2a, 3, 5) or dme (4) by free (C-N-C) or by (b) reaction of the bisimidazolium salt (CH-N-CH)Br2 with {Cr[N(SiMe3)2]2(thf)2} followed by amine elimination (2b). Attempted alkylation of 1a, 2, 3a and 4 with Grignard or alkyl lithiums gave intractable mixtures, and in one case [reaction of 1a with (mesityl)MgBr] resulted in exchange of Cl by Br (1b). Oxidation of 1a or [(C-N-C)VCl3] with 4-methylmorpholine N-oxide afforded the trans-V(C-N-C)(=O)Cl2, 6, which by reaction with AgBF4 in MeCN gave trans-[V(C-N-C)(=O)(MeCN)2][BF4]2, 7. Reaction of 1a with p-tolyl azide gave trans-V(C-N-C)(=N-p-tolyl)Cl2 8. The complex trans-Ti(C-N-C)(=NBu(t))Cl2, 9, was prepared by substitution of the pyridine ligands in Ti(NBu(t))Cl2(py)3 by C-N-C. 相似文献
10.
Shreedhar N. Shetti A. Sitaramachandra Murty Gopal L. Tembe 《Transition Metal Chemistry》1993,18(5):467-472
Summary Complexes of the potentially tetradentate ligand isonitroso-acetylacetone dithiosemicarbazone (inbtH2) of formulae [Ti(inbtH2)Cl2]Cl2, [M(inbt)], where M = VIV O, MnII, NiII or ZnII, [M(inbtH2)X2], where M = CoII and X = Cl, or M = NiII and X = Cl, Br or I, and [M(inbtH2)Cl2]Cl, where M = CrIII or FeIII, have been prepared and characterized by physico-chemical and spectroscopic methods. In all the compounds the metal is coordinated by the thiocarbonyl sulphur and imine nitrogen, as revealed by i.r. studies. The n.m.r. spectra of the complexes of NiII and ZnII confirm coordination through nitrogen. Possible structures for the complexes are proposed. The Mössbauer spectrum of the FeIII complex is discussed. 相似文献
11.
Russian Journal of General Chemistry - 相似文献
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B. I. Buzykin V. N. Nabiullin E. V. Mironova A. A. Kostin D. A. Tatarinov V. F. Mironov I. A. Litvinov 《Russian Journal of General Chemistry》2012,82(10):1629-1645
Dimephosphone (2-dimethoxyphosphoryl-2-methylpentan-4-one) phenyl-, nitrophenyl-, benzoyl-, and 4-nitrobenzoylhydrazones were synthesized. The compounds in crystals were shown to have a steric form exclusively of the E-isomer. The structure of hydrazones in solution is defined by the nature of the substituents and the solvent and the time of storage of the solution. The dimephosphone aroylhydrazones in acid solutions exist in several possible forms: the isomers at the imine bond, the conformers at the amide bond, and a cyclic tautomer (1,3,4-oxadiazoline). 相似文献
13.
E. V. Savinkina D. V. Al’bov E. A. Buravlev I. A. Zamilatskov 《Russian Journal of Inorganic Chemistry》2007,52(7):1056-1062
Polyiodides of acetamide complexes of transition elements have been synthesized and studied by X-ray diffraction analysis. Compounds [M(AA)6][I10] (M = Mn, Fe, Co, Ni, Zn) are isostructural with the earlier studied cadmium compound. The crystals of [Co(AA)4(H2O)2][I12] are monoclinic: a = 17.486(6) Å, b = 15.015(4) Å, c = 7.8309(15) Å, β = 99.87(2)°, V = 2025.6(10) Å3, space group C2/m, Z = 4. The crystals of [Ni(AA)6][I3]2 are monoclinic: a = 23.032(9) Å, b = 12.176(4) Å, c = 18.274(5) Å, β = 139.22(3)°, V = 3347.0(19) Å3, space group Cc, Z = 4. 相似文献
14.
Complexes of Mn(II), Co(II), Ni(II), Cu(II), Zn(II), Cd(II) and Hg(II) with 2-acetyl pyridine (N-benzoyl) glycyl hydrazone(2-ApBzGH)
have been synthesized and characterized by elemental analyses, molar conductances, magnetic susceptibility, IR, electronic,
ESR,1H,13C and113Cd NMR spectral and X-ray diffraction studies. IR and NMR data suggest the tridentate nature of the ligand coordinating as
a neutral species in the addition complexes and as a uninegative species in the deprotonated complexes. The presence of more
than one isomer of the ligand has been established by1H NMR spectra of the ligand and complexes recorded over the 298–396 K range. The X-ray powder diffraction patterns of [Cd(2-ApBzGH)Cl]Cl
and [Cu(2-ApBzGH)Cl(H2O)2]Cl are indexed for orthorhombic and tetragonal crystal systems respectively. 相似文献
15.
The synthesis of the new complexes of 1-phenylacetyl-4-phenyl-3-thiosemicarbazide (H2papts) and 1-phenoxyacetyl-4-phenyl-3-thiosemicarbazide (H2Pxapts); [Ru(HL)2(H2O)2], [Rh(HL)3], [Ag(H2L)(H2O)2](NO3), trans-[UO2(HL)(bipy)(AcO)(H2O)2] (H2L = H2papts, H2pxapts; bipy = 2,2'-bipyridyl), [Ag(H2papts)(bipy)]+ and [Pd-(Hpapts)(bipy)]+ is described. Characterization of these complexes by IR, electronic and 1H-NMR spectra, conductometric titrations and thermal analysis is included. The complexes [Ru(HL)2(H2O)2] were found to be efficient catalysts for the oxidation of primary alcohols to aldehydes and acids, secondary alcohols to ketones and aryl halides to aldehydes and acids in the presence of NaIO4 as co-oxidant. 相似文献
16.
用精密pH电位法测定了在甲醇 水混合溶剂中配体氨三乙氧基三苯甲酸 (NEB)质子化常数 (2 5℃ ,I =0 .2 0mol·L- 1 NaCl) ,讨论了溶剂对质子化常数的影响 ,结果表明溶剂对质子化常数的影响呈线性关系。测定了NEB与部分过渡金属M(Ⅱ) (M =Cd、Co、Ni、Cu及Zn)二元配合物的稳定常数 ,实验数据处理用程序MINIQUAD - 82和MIQUV完成。在二元体系中存在的配合物物种有 112、111、110及 2 10型 (M2 + ∶NEB3- ∶H+ ) ,并且 111及 110型配合物稳定常数的变化规律Cd(Ⅱ) Zn(Ⅱ)符合Irving Williams序列 相似文献
17.
In this study, three new aminobiphenylglyoximes, [L1H2] N-(2-methoxy)aminobiphenylglyoxime, [L2H2] N-(3-methoxy)aminobiphenylglyoxime and L[3H2] N-(4-methoxy)aminobiphenylglyoxime have been synthesized by the reaction of (E,E)-4′-biphenylchloroglyoxime with 2-Methoxyaniline, 3-Methoxyaniline and 4-Methoxyaniline in absolute ethanol. The preparation
NiII, CoII and CuII complexes of these ligands are described. The ligands and their complexes were characterized by elemental analyses, IR, mass,
H1 and 13C NMR spectra, thermogravimetric analyses (t.g.a) and magnetic susceptibility measurements. Ligands complexing properties
were studied by the liquid–liquid extraction of selected alkali (Li+, Na+, K+, Cs+) and transition metals (Co2+, Ni2+, Cu2+, Zn2+, Cd2+, Pb2+). It has been observed that all ligands show a high affinity to Cu2+ ions, whereas almost no affinity to alkali metals. The extraction equilibrium constants (K
ex) for complexes of ligands with Cu2+ metal picrates between dichloromethane and water have been determined at 25°C. 相似文献
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《Journal of organometallic chemistry》1986,317(3):301-306
Diferrocenylglyoxime has been prepared by the reaction of monolithioferrocene or dilithioferrocene with anti-dichloroglyoxime. Characterization of this novel vic-dioxime and some of its transition metal complexes are described. 相似文献