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A. N. Gusev E. A. Zamnius V. F. Shul’gin O. V. Konnik I. L. Eremenko G. G. Aleksandrov V. V. Minin 《Russian Journal of Inorganic Chemistry》2011,56(11):1729-1732
A copper(II) complex with salicylaldehyde N-(2-salicylideneiminoglutaryl)hydrazone (H4L) of the formula [Cu2L · 2Py]2 · 8H2O (I) was obtained and characterized by X-ray diffraction. The crystals are monoclinic, space group P21, a = 13.0663 Å, b = 16.5553 Å, c = 17.7650 Å, β = 97.9420°; Z = 4. The complex is tetranuclear with a “dimer-of-dimers” structure in which the copper cations of two binuclear subunits are linked by phenoxy bridges. The EPR spectra of solutions of complex I show a superposition of two signals of four HFS lines (g 1 = 2.111, a 1 = 56.8 × 10?4 cm?1 and g 2 = 2.183, a 2 = 71.0 × 10?4 cm?1). 相似文献
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O. V. Konnik V. F. Shul’gin A. N. Gusev E. A. Zamnius V. V. Minin 《Russian Journal of Inorganic Chemistry》2017,62(3):351-354
The results of studying the binuclear copper(II) complexes with acyldihydrazones of amino-, oxo-, and thiodiacetic acids and 2-hydroxyacetophenone were described. The temperature variations of the EPR spectra of solutions with a seven-line hyperfine structure indicating an exchange character of interaction between unpaired electrons and the two equivalent nuclei of copper atoms were studied. 相似文献
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V. F. Shul’gin E. A. Zamnius A. N. Gusev O. V. Konnik E. B. Rusanov V. Ya. Zub V. V. Minin 《Russian Journal of Coordination Chemistry》2011,37(11):811-816
The structure and the EPR spectra of copper(II) coordination compounds with acyldihydrazones of N-benzenesulfonyl-L-aspartic acid and salicylaldehyde (2-hydroxyacetophenone) were described. The compounds were studied by chemical and thermal analyses, IR spectroscopy, and EPR. The molecular and crystal structures of copper(II) complexes with N-benzenesulfonyl-L-aspartic acid bis(salicylidene)hydrazone (H4L1) [Cu2L1 · 2Py] · 1.5 H2O was determined by X-ray diffraction. The crystals are triclinic: a = 10.4714(4) Å, b = 12.9702(5) Å, c = 14.6187(9) Å, α = 104.763(2)°, β = 93.082(2)°, γ = 111.4240(10)°, space group P \(\bar 1\), Z = 2. The binuclear complexes containing copper cations whose coordination polyhedra are connected by an aliphatic spacer (Cu...Cu, 8.669 Å) are additionally linked by phenoxy bridges (Cu...Cu, 3.398 Å). The EPR spectra of these compounds in solutions exhibit an isotropic signal of seven HFS lines due to two equivalent copper ions with the spin Hamiltonian parameters g = 2.115?2.120, a Cu = (35.5?38.0) × 10?4 cm?1, which is indicative of weak exchange interactions between the paramagnetic sites. 相似文献
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V. F. Shul’gin E. A. Zamnius A. N. Gusev O. V. Konnik E. B. Rusanov V. Ya. Zub V. V. Minin 《Russian Journal of Inorganic Chemistry》2011,56(10):1598-1602
The structure and EPR spectra of copper(II) complexes with bis(salicylidene)hydrozones of N-benzoyl-L-aspartic and N-benzoyl-L-glutamic acids have been described. The compounds have been studied by chemical and thermal analyses, IR spectroscopy, and EPR spectroscopy. The molecular and crystal structure of the copper(II) complex with bis(salicylidene)hydrozone of N-benzoyl-L-aspartic acid (H4L) of composition [Cu2L · 2Py] · 2CH3OH · H2O has been determined by X-ray single-crystal diffraction. The crystals are monoclinic: a = 10.3316(7) Å, b = 16.7552(9) Å,c = 11.0137(6) Å, β = 105.758(3)°, space group P21, Z = 2. The complex has a polymeric structure composed of alternating copper-containing binuclear fragments bound to each other either via phenoxy bridges or via an aliphatic spacer (the Cu…Cu distances are 3.471 Å and 8.939 Å, respectively). The EPR spectra of the solutions of the complexes under study shows an isotropic signal comprising seven HFS lines due to two equivalent copper nuclei with the spin Hamiltonian parameters g = 2.115–2.122 and a Cu = (36.1–36.9) × 10?4 cm?1, which indicates the reaization of weak exchange coupling of the paramagnetic centers. 相似文献
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Gusev A. N. Braga E. V. Kryukova M. A. Lyubomirskii N. V. Zamnius E. A. Shul’gin V. F. 《Russian Journal of Coordination Chemistry》2020,46(4):251-259
Russian Journal of Coordination Chemistry - New coordination zinc compounds based on 3-methyl-4-formyl-1-phenylpyrazol-5-one acylhydrazones [Zn(L)(CH3COO)Solv] (Solv is H2O (I), Py (II)) are... 相似文献
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