научный журнал по химии Координационная химия ISSN: 0132-344X

SHEIKHSHOAIE I. — 2007 г.

GAO G.R., KONG Y.M., LI Y., LIU X. ZH., WANG J., ZHANG X.D., ZHANG ZH. H. — 2007 г.

CHEN Y.R., JIA R.R., LIU X.N., SHAO J.G., YANG Y.X., YING H.P. — 2007 г.

New solid AsI3-urotropine complex, AsI3(C6H12N4)2, was synthesized. The crystal structure of the complex belongs to triclinic system with the lattice parameter: a = 9.737, b = 11.769, c = 19.874 A, = 96.69°, = 96.69°, = 100.36°. The far-infrared spectra show the bonding between the arsenic ion and N atom of urotropine. The TG–DTA and 1H NMR data also demonstrate the complex formation between the arsenic ion and urotropine. The results of the biologic tests of the complexes of arsenic show that the biologic effect of these complexes of arsenic to leukemia cell (HL–60) is higher than arsenic only by MTT colorimetric assay. This fact also shows that the coordinated ligand might make biologic effect increase.

KAYA А., KOSE D.А., NECEFOLU H. — 2007 г.

Four novel mixed-ligand complexes of Co(II), Ni(II), Cu(II), and Zn(II) with m-hydroxybenzoate (m-Hba) and N,N-diethylnicotinamide (Dena) were synthesized and characterized on the basis of elemental analysis, FT-IR spectroscopic study, and solid state UV-Vis spectrophotometric and magnetic susceptibility data. The thermal behavior of the complexes was studied by simultaneous TG–DTA methods in static air atmosphere, and the mass spectra were recorded. The Co(II), Ni(II), and Zn(II) complexes, except of the Cu(II) complex, contain two molecules of coordination water, two m-Hba, and two Dena ligands per formula unit. In these complexes, the m-Hba and Dena behave as monodentate ligands via acidic oxygen and nitrogen of the pyridine ring. In the Cu(II) complex, the m-Hba is coordinated as monoanionic bidentate ligand through acidic oxygen and carbonyl oxygen. Dena is bonded with Cu2+ as monodentate ligand by the nitrogen atom of the pyridine ring. The decomposition pathways and the stability of the complexes are interpreted in terms of the proposed structural data. The final I decomposition products were found to be the respective metal oxides.

COSKUN A., KOC Z.E. — 2007 г.

4-Acetyldiphenyl sulfide and 4,4-diacetyldiphenyl sulfide were synthesized from diphenyl sulfide and acetyl chloride in the presence of AlCl3 as catalyst in the Friedel–Crafts reaction. Subsequently, the ketooxime and glyoxime derivatives were also prepared. The metal complexes of the glyoximes, such as copper, nickel, and cobalt complexes were prepared. The -capped Ni(II) mononuclear complex of 4-thiophenoxyphenylglyoxime was prepared. The structures of these ligands were identified by FT-IR, 1H NMR, and 13C NMR spectral data and elemental analysis. The structures of the complexes were identified by FT-IR, elemental analysis, and magnetic measurements.

GULER E., KOCYIGIT O. — 2007 г.

The Schiff bases derived from 3,4-dimethyl- 3-tetrahydrobenzaldehyde or 4,6-dimethyl- 3-tetrahydrobenzaldehyde and glycine and their complexes with nickel(II) and copper(II) were synthesized and investigated. All compounds were characterized by elemental analyses, conductivity measurements, and FT-IR spectroscopy. The Schiff base ligands and their complexes were further characterized by 1H NMR. The results suggest that the Schiff base acts as a bidentate ligand, which bonds to the metal ions through the imino nitrogen and carboxylate oxygen. The potassium salts of the Schiff bases are 1 : 1 electrolytes but all the complexes are nonelectrolytes.

COSKUN A., KOC Z.E., UCAN H.I., UCAN M., UYSAL S. — 2007 г.

BAYSAL A., BULDA A. — 2007 г.

A novel tetradentate Schiff base ligand, 2,2-{1,2-phenylene-bis[(E)-methylidienenitrilo]}dipyridin-3-ol, has been synthesized by the condensation of phthalaldehyde with 2-amino-3-hydroxypyridine. A series of its complexes with transition metals have been prepared and characterized by a combination of IR, UV-VIS, and LC-MS spectroscopy, magnetic measurements, and elemental analyses. The spectral data of the ligand and its complexes are discussed in connection with structural changes that occur due to complexation.

DEVECI P., OZCAN E., TANER B. — 2007 г.

Two new soluble vic-dioxime ligands, 4-isopropylanilineglyoxime (L1H2) and 4-benzylpiperidineglyoxime (L2H2) were prepared by reacting 4-isopropylaniline and 4-benzylpiperidine with anti-chloroglyoxime. Ten metal complexes were obtanied by reacting both ligands with Cu(II), Ni(II), Co(II), Zn(II), and Cd(II) cations. The ligands and their metal complexes were elucidated by elemental analysis, IR, UV-vis, 1H NMR, and 13C NMR and also magnetic moments of the complexes were determined.

DEVECI M.A., KOCAK N., SAHIN M., UCAN H.I. — 2007 г.

Three novel ligands, -pycolyliminoisonitrosoacetophenone (L1H · HCl), -pycolylimino-p-methylisonitrosoacetophenone (L2H · HCl), and -pycolylimino-p-chloroisonitrosoacetophenone L3H, were synthesized. Their metal complexes with Co(II), Cu(II), and Ni(II) were prepared. The mononuclear complexes of these ligands with Co2+, Cu2+, and Ni2+ ions were obtained in ethanol. The structures of the ligands and their complexes were characterized by 1H NMR, IR spectroscopy, elemental analyses, and magnetic susceptibility.

BAO Y., BI C.F., CHEN R., FAN Y.H., GUO F., HE X.T. — 2007 г.

A new unsymmetrical Schiff base ligand (H2LLi) was synthesized using L-lysine, salicylaldehyde, and 2-hydroxy-l-naphthaldehyde. Three rare-earth ion complexes of this ligand, [REE(H2L)(NO3)]NO3 · 2H2O (REE = La, Sm, Ho), have been prepared and characterized by elemental analyses, IR spectra, UV spectra, TG–DTG, and molar conductance. The antibacterial activity of the ligand and its complexes are also studied. The antibacterial experiments indicate that this ligand and its complexes possess antibacterial activity against Escherichia coli, Staphylococcus aureus, and Bacillus subtilis and the complexes have higher activity than that of the ligand.

ASWAR A.S., BADWAIK V.B. — 2007 г.

The synthesis of a new Schiff base derived from 2-hydroxy-5-chloroacetophenone and 4-amino-5-mercapto-3-methyl-1,2,4-triazole and its coordination compounds with Ti(III), VO(IV), Cr(III), Mn(III), Fe(III), Zr(IV), MoO2(VI), and UO2(VI) are described. The ligand and the complexes have been characterized on the basis of analytical, electrical conductance, molecular weight, IR and electronic spectra, magnetic susceptibility measurements, and thermogravimetric analysis. The ligand acts as a dibasic tridentate molecule. Antibacterial activities of the ligand and its metal complexes have been determined by screening the compounds against E. coli, S. typhi, P. aeruginosa, and S. aureus. The solid state dc electrical conductivity of the ligand and its complexes have been measured over 313–403 K, and the complexes were found to be of semiconducting nature.

ILHAN S., TEMEL H. — 2007 г.

The metal complexes of Co(II), Cu(II), Ni(II), and Zn(II) with novel quadridentate Schiff base derived from 1,4-bis(4-chloro-2-aminophenoxy)butane and salicylaldehyde have been synthesized in DMF. These complexes have been characterized by microanalytical data, elemental analysis, magnetic measurements.1H NMR, 13C NMR, UV-vis and IR-spectra as well as conductance measurements were used to confirm the structures. On the basis of these observations it is suggested that these complexes exhibit the coordination number four.

JOSEPH J., MEHTA B.H. — 2007 г.

Mn(II), Co(II), Ni(II), Cu(II), Cd(II), and Hg(II) metal complexes with Schiff bases derived from 3-formyl-4-hydroxycoumarin and semicabazone are synthesized and characterized on the basis of elemental analysis, molar conductance, magnetic moment, IR, electronic, 1H NMR spectrum, and ESR spectrum, TGA, and X-ray diffraction powder methods. Molar conductance values indicate that the complexes are nonelectrolytic in nature. Magnetic moment and spectral studies suggest either tetrahedral or square-planar geometry around the central metal ions. The analytical data indicate that metal-to-ligand stoichiometry in all complexes is 1 : 1.

BI C.F., FAN Y.H., GUO F., WANG A.D., ZOU Y.N. — 2007 г.

A complex [Zn(C8H7O3)2(H2O)2] (C8H8O3 is vanillin) has been synthesized and characterized by IR, elemental analysis, and X-ray diffraction single-crystal analysis. The crystals are monoclinic, space group C2/c, a = 22.236(8) A, b = 10.594(2) A, c = 7.8190(16) A, = 89.90(3)°, =106.87(4)°, = 89.99(3)°, V = 1762.6(8) A3, Z = 4, F(000 ) = 832, S = 1.079, c = 1.521g cm-3, R = 0.0221, Rw = 0.0604, = 1.433 mm-1. The Zn2+ ion is six-coordinated with a distorted octahedron geometry. The complex forms a three-dimensional network through intermolecular hydrogen bonds. The thermal decomposition kinetics of the complex for the second stage was studied under non-isothermal conditions by the TG and DTG methods. The kinetic equation can be expressed as d /dt = Ae-E/RT 2(1 )[1 – ln(1 )]1/2. The kinetic parameters (E, A), activation entropy S , and activation free-energy G were also gained.

DU L., FANG R.B., TANG D.Y., ZHAO Q.H. — 2007 г.

Two novel complexes Ni(NITpPy)2[N(CN)2]2 · 2H2O (I) and Zn(NITpPy)2[N(CN)2]2 · 2H2O (II) (NITpPy = 2-(p-pyridyl)-4,4,5,5- tetramethylimidazoline-1-oxyl-3-oxide) were synthesized and characterized by infrared spectra, elemental analyses, and UV-Vis techniques. The crystal structures of the both complexes have been determined by X-ray diffraction analysis. Both complexes are of centrosymmetric distorted octahedral coordination geometry in which metal ions are bound to two dicyanamide anions, two water molecules, and two radicals through the nitrogen atom of pyridine rings and show one-dimensional chain structure via hydrogen bonds. The magnetic properties for complexes I and II were investigated in the temperature range 5–300 K and discussed in detail. The two compounds exhibit weak intermolecular antiferromagnetic interaction. In complex II, the diamagnetic metal zinc just plays the rule of a bridge.

LI K.C., LI Y., SONG W.D., ZHANG Z.X. — 2007 г.

The homometal cluster [Fe(DMF)6][W2( 2-S)2S4] (I) was successfully synthesized by low-temperature solid-state reactions. X-ray single-crystal diffraction studies suggest that compound I is a dinuclear anion cluster. The compound was characterized by elemental analyses, IR spectra, and UV-Vis spectra. The third-order nonlinear optical (NLO) properties of the cluster were also investigated and exhibited nice nonlinear saturation absorption ( 2 < 0) that is rarer than reverse saturation absorption ( 2 > 0) and self-defocusing property (n2 < 0) and self-defocusing performance with modulus of the hyperpolarizabilities (9.547 ? 10-31 esu) for I.

ГЕРАСИМЕНКО А.В., ЗАЕВА А.С., ИВАНОВ А.В., НОВИКОВА Е.В., ФОРШЛИНГ В. — 2007 г.

Получены кристаллические аддукты дитиокарбаматных комплексов цинка и меди(II) с дибутил- и ди-изо-бутиламином общего состава [ ] (M = Zn, 63Cu, 65Cu; R = CH3, C2H5; R2 = (CH2)4O; R = C4H9, i-C4H9), строение и спектральные свойства которых были исследованы методами ЭПР и MAS ЯМР (13C, 15N). Данные ЭПР и компьютерного моделирования спектров подтвердили индивидуальность полученных аддуктов меди(II). Установлено, что геометрия координационных полиэдров атомов меди является промежуточной между тетрагональной пирамидой и тригональной бипирамидой (ТБП). По результатам ЭПР спектроскопии рассчитан вклад ТБП-составляющей в геометрию полученных соединений. По данным РСА установлено, что аддукт диэтилдитиокарбаматного комплекса цинка с ди-изо-бутиламином существует в двух изомерных модекулярных формах. Проведено отнесение резонансных сигналов ЯМР (13C, 15N) к положениям атомов в разрешенных молекулярных структурах конформеров.

ИЛЮХИН А.Б., ПЕТРОСЯНЦ С.П. — 2007 г.

Исследовано комплексообразование в системе GaCl3 ROH MNCS 18K6, где ROH = MeOH, EtOH; M = Na, K; 18K6 – 1,4,7,10,13,16-гексаоксоциклооктадекан. Синтезированы и идентифицированы две модификации [Na(18K6)][GaCl4], ансамбль [Na(18K6)][GaCl4](MeOH)0.9(EtOH)1.1 и [Ga(H2O)3(NCS)3] · 18K6. Методами ЯМР 71Ga (растворы) и рентгеноструктурного анализа установлено, что состав и строение полученных соединений определяется соотношением конкурирующих ацидолигандов (Cl- и NCS-) в реакционном растворе.

ИЛЮХИН А.Б., ПЕТРОСЯНЦ С.П. — 2007 г.

Синтезированы соединения [Sc(H2O)4(NCS)2][Sc(H2O)2(NCS)4] · 2(18К6) (I) и [Sc(H2O)4(NCS)2][Sc(H2O)(NCS)4] · 3(18К6) · H2O (II). По данным РСА, в структурах I и II катионы образуют сэндвичи [Sc(H2O)4(NCS)2] · 2(18К6), в случае I сэндвичи объединяются анионами [Sc(H2O)2(NCS)4]- в цепочки, а в II между сэндвичами и бесконечными цепочками [Sc(H2O)2(NCS)4] · 18К6 · H2O имеются только ван-дер-ваальсовы контакты.