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

Архив научных статейиз журнала «Координационная химия»

  • SYNTHESES, STRUCTURE, AND LUMINESCENCE OF TWO NEW 1D CD(II) COMPLEXES

    WANG J., WU W.P., WU Y., XIE B., ZHANG X.L. — 2015 г.

    Two Cd-based complexes with chemical formulae {[Cd(L)(2,2-Bipy)] · 0.5H2O}n (I) and [Cd(L)(3-Mp)2]n (II) (H2L = 3,5-dibromosalicylaldehyde salicylhydrazone; 2,2-Bipy = 2,2-pyridine, 3-Mp = 3-methylpyridine), have been synthesized and structurally characterized by X-ray single-crystal diffraction (CIF files CCDC nos. 1044341 (I), 1044342 (II)). Furthermore, the luminescence properties of compounds I and II have been investigated.

  • SYNTHESES, STRUCTURES, CHARACTERIZATION, AND BIOACTIVITIES OF NEW CD(II) COMPLEX OF 2,3-PYRAZINEDICARBOXYLATE WITH 1,10-PHENANTHROLINE

    GAO E.J., GE J., LI L.F., LI Y.Y., LIANG S.K., MA C., WANG L., ZHANG J. — 2015 г.

    A novel complex [Cd(Phen)2(Pzdc)] · 7.5(H2O) (I), where Phen = 1,10-phenanthroline, Pzdc = 2,3-pyrazinedicarboxylic acid, has been synthesized under room temperature conditions and characterized by IR spectroscopy, elemental analysis, and X-ray single-crystal structure analysis (CIF file CCDC no. 1 023 407). Its mode of interaction with fish sperm DNA (FS-DNA) have been determined by fluorescence. Gel electrophoresis assay demonstrates the ability of complex I to cleave the HL-60 DNA. Furthermore, apoptosis assay shows treatment with complex results in morphological changes of cancer cell lines. The results induce apoptosis in JEKO cells.

  • SYNTHESIS AND STRUCTURAL CHARACTERIZATION OF OXOVANADIUM(V) COMPLEXES WITH MIXED TRIDENTATE BENZOHYDRAZONE AND BIDENTATE NO LIGANDS

    HAN Y.W., HU X.M., SHENG G.H., XU Y., YOU Z.L., ZHU H.L. — 2015 г.

    New oxovanadium(V) complexes, [VO(L1)(Bha)] (I) and [VO(L2)(Qnl)] (II), were prepared by the reactions of [VO(Acac)2] (Acac = acetylacetonate), (4-nitrophenoxy)acetic acid [1-(2-hydroxy-3-methylphenyl)methylidene]hydrazide (H2L1) and benzohydroxamic acid (HBha), and [VO(Acac)2], N-(2-hydroxy-5-methylbenzylidene)-3-methylbenzohydrazide (H2L2), and 8-hydroxyquinoline (HQnl) in methanol, respectively. Crystal and molecular structures of complexes I and II were determined by elemental analysis, infrared and UV-Vis spectra and single crystal X-ray diffraction (CIF files CCDC nos. 1000875 (I) and 1012028 (II)). The V atoms in the complexes are in octahedral coordination. Thermal stability of complex I was studied.

  • SYNTHESIS AND STRUCTURAL CHARACTERIZATION OF TRIFLUOROMETHYL-SUBSTITUTED ?-KETOIMINO COPPER(II) COMPLEX AND ITS CATALYTIC BEHAVIOR FOR METHYL ACRYLATE POLYMERIZATION

    LEI L., LI T.C., WANG X.J., WEN Y.C., XIA P., XIAO X., XIE G.Y., ZHANG A.Q. — 2015 г.

    A new trifluoromethyl-substituted bis (?-ketoimino)copper complex (II) was synthesized and characterized by FTIR, elemental analysis and X-ray diffraction (CIF file CCDC no. 1 023 178). XRD refinement revealed that the copper complex adopted a perfect central symmetric square planar structure with the copper center coordinated by two trans ?-ketoimine ligands with delocalized double bonds. On activation with modified methylaluminoxane (MMAO), the bis( -ketoimino)copper complex can polymerize methyl acrylate effectively. Introduction of trifluoromethyl group into the N-aryl ring of the ligands, which leads to strong electron-withdrawing effect, can improve significantly the catalytic activities. The activity of II/MMAO can reach 89.4 kg/mol Cu h, which is among the highest values reported for copper complexes in acrylic monomer polymerization.

  • SYNTHESIS AND X-RAY STRUCTURES OF DI- AND MONO-NUCLEAR OXOVANADIUM(V) COMPLEXES DERIVED FROM AROYLHYDRAZONES

    CHEN X.F., LI H.H., LI J., WANG T., YOU Z.L., ZHANG X.Z., ZHU H.L. — 2015 г.

    A new methanolato-bridged dinuclear oxovanadium(V) complex [VO(L)(OMe)]2 (I) derived from N-(2-hydroxy-5-methylbenzylidene)-2-methylbenzohydrazide (H2L) and a new mononuclear oxovanadium(V) complex [VO(L)(OMe)(MeOH)] (II) derived from 3-chloro-N-(2-hydroxy-3-methylbenzylidene)benzohydrazide (H2L) were prepared and characterized by infrared spectra and single crystal X-ray determination (CIF files CCDC nos. 974793 (I) and 974792 (II)). Complex I crystallizes as triclinic space group P with unit cell dimensions a = 8.5063(4), b = 9.5367(4), c = 11.2445(5) A, = 71.740(1)°, = 72.341(1)°, = 74.509(1)°, V = 810.37(6) A3, Z = 1, R1 = 0.0527, wR2 = 0.1316, S = 0.969. The complex possesses a crystallographic inversion center symmetry between two V atoms. Complex II crystallizes as triclinic space group P with unit cell dimensions a = 7.4257(3), b = 9.9475(4), c = 13.1021(5) A, = 71.954(1)°, = 85.657(1)°, = 84.127(1)°, V = 914.38(6) A3, Z = 2, R1 = 0.0365, wR2 = 0.0957, S = 1.039. The tridentate aroylhydrazone ligands coordinate to the V center through azomethine nitrogen, phenolate oxygen and enolate oxygen. The V atoms in the complexes are in octahedral coordination. Crystal structures of the complexes are stabilized by hydrogen bonds and ... interactions.

  • SYNTHESIS, CHARACTERIZATION, AND CRYSTAL STRUCTURE OF A NOVEL CYANIDE-BRIDGED HETERONUCLEAR CO(III)–MN(III) COMPLEX DERIVED FROM N,N-ETHYLENE-BIS(CHLOROSALICYLIDENEIMINE)

    LIAN Q., LIU C., SHAO L.J., SHEN X.H., ZHANG Z.W. — 2015 г.

    With a bis-Schiff base N,N-ethylene-bis(5-chlorosalicylideneimine) (H2L) and K3[Co(CN)6], a novel cyanide-bridged heteronuclear Co(III)–Mn(III) complex was prepared and characterized by elemental analysis, IR spectroscopy and X-ray structure determination (CIF file CCDC no. 1 029 225). The complex crystallizes in the monoclinic space group P21/c with unit cell dimensions a = 10.741(2), b = 14.015(3), c = 15.074(3) A, = 94.237(2)°, V = 2263.0(8) A3, Z = 2, R1 = 0.0441, and wR2 = 0.0999. Single crystal X-ray diffraction analysis reveals that two [Mn(L)(OH2)]+ units are linked through a [Co(CN)6]3 bridge, forming a trinuclear Mn–Co–Mn moiety. The Mn–Co–Mn moieties are further linked through K atoms to form a 1D chain. The chains are stacked through ... interactions. The Mn and Co atoms are in octahedral coordination, and the K atom is in square planar geometry.

  • SYNTHESIS, CHARACTERIZATION, AND PROPERTY STUDY OF COORDINATION POLYMERS CONSTRUCTED FROM CD SALT AND MIXED LIGANDS

    TONG J., XING C.Y., ZHANG P. — 2015 г.

    Two interesting new coordination polymers {[Cd(Dcbpyno)(1,4’-Bix)1.5] · 2H2O}n (I) and [Cd(1,2’-Cy)(4,4’-Bipy)]n (II) (Dcbpyno = 2,2-bipyridine-3,3-dicarboxylate-1,1-dioxide, 1,4-Bix = 1,4-bis(imidazol-1-ylmethyl)benzene, 1,2-Cy = 4-cyclohexene-1,2-dicarboxylate and 4,4-Bipy = 4,4-bipyridine) have been synthesized under different conditions. The X-ray crystal structures of these two complexes are presented (CIF files CCDC nos. 905 357 (I), 874 125 (II)). Complex I exhibits three-dimensional network, while complex II shows an interesting two-dimensional covalent layer structure. Furthermore, the photocatalytic property of complex I and the fluorescent property of complex II were reported.

  • SYNTHESIS, CHARACTERIZATION, AND STRUCTURES OF TWO NEW TETRANUCLEAR COPPER COMPLEXES WITH AZIDO/DICYANAMIDE BRIDGES CONTAINING CHIRAL SCHIFF BASE LIGAND

    HOU X.K., WANG Z.X., XUE C.C., ZHOU Z. — 2015 г.

    Two new copper complexes [ ] (I) and [ ] (II) (H2L = (1R,3S)-N,N-bis[5-methoxysalicylidene]-1,3-diamino-1,2,2-trimethylcyclopentane, Dca = dicyan-amide ions) were synthesized and structurally characterized by elemental analyses, IR spectroscopy and single-crystal X-ray diffraction (CIF files CCDC nos. 1 013 673 (I), 1 013 672 (II)). The two complexes crystallize in monoclinic P21/c and triclinic P space group, respectively. Both the complexes consist of two crystallographically independent copper ions connected by a double phenoxo bridges, which are further linked to the other symmetry-related half of the molecule by two end-on azido bridges or -dca groups.

  • SYNTHESIS, CRYSTAL STRUCTURE, AND ANTIBACTERIAL ACTIVITY OF A MANGANESE(III) COMPLEX DERIVED FROM N,N-3,4-CHLOROPHENYLENE-BIS(5-METHYLSALICYLALDIMINE)

    DENG D., WANG Q., XU Y., XUE L. — 2015 г.

    A new mononuclear manganese(III) complex has been synthesized from the Schiff base compound N,N-3,4-chlorophenylene-bis(5-methylsalicylaldimine) and manganese perchlorate in the presence of sodium azide. The complex has been characterized by physico-chemical and spectroscopic methods, as well as single crystal X-ray determination (CIF file CCDC no. 1054335). The Mn atom in the complex is six-coordinate by two nitrogen and two oxygen atoms of the Schiff base ligand, one nitrogen atom of an azide ligand, and one oxygen atom of a methanol ligand. Crystal structure of the complex is stabilized by hydrogen bonds and ... interactions. The complex and the Schiff base compound were assayed for antibacterial activities against three Gram-positive bacterial strains (B. subtilis, S. aureus, and St. faecalis) and three Gram-negative bacterial strains (E. coli, P. aeruginosa, and E. cloacae) by MTT method. As a result, the complex showed effective antimicrobial activity against the microorganisms tested.

  • SYNTHESIS, CRYSTAL STRUCTURE, AND CATALYTIC PROPERTY OF A VANADIUM(V) COMPLEX WITH MIXED LIGANDS

    LIAN Q., LIU C., SHAO L.J., SHEN X.H., ZHANG Z.W. — 2015 г.

    With a tridentate hydrazone ligand N-(3-bromo-2-hydroxybenzylidene)-2-methylbenzohydrazide (H2L) and a bidentate ligand benzohydroxamic acid (HL) with VO(Acac)2, a mononuclear vanadium(V) complex was prepared and characterized by elemental analysis, IR spectroscopy and X-ray structure determination (CIF file CCDC no. 1029909). The complex crystallizes in the monoclinic space group C2/c with unit cell dimensions a = 27.870(2), b = 11.4893(5), c = 18.467(2) A, = 131.444(1)°, V = 4432.6(6) A3, Z = 8, R1 = 0.0350, and wR2 = 0.0749. Single crystal X-ray diffraction analysis reveals that the V atom is coordinated by the phenolate O, imino N and enolate O atoms of the hydrazone ligand, and the carbonyl O and hydroxy O atoms of benzohydroxamate ligand, and one oxo O group, in an octahedral coordination. Catalytic oxidation of the complex on some olefins was performed.

  • SYNTHESIS, CRYSTAL STRUCTURE, AND FLUORESCENT PROPERTY OF [ZNII(PTA)2(4,4’-BIPY)(H2O)2]N

    CHEN Y.F., MA C.L., WU J. — 2015 г.

    enhanced. However, the complex displays fluorescence quenching, which probably be caused by charge transfer which due to HPta and 4,4-Bipy mutual coordination with Zn(II). with a = 5.574(2), b = 11.514(5), c = 12.140(5) A, = 64.653(6)°, = 86.859(8)°, = 84.282(7)°, V = 700.6(5) A3, c = 1.569 g/cm3, Z = 1, C30H28N8O6Zn, Mr = 661.97, F(000) = 342, = 0.938 mm-1, the final R = 0.0578 and wR = 0.1241 for 4876 observed reflections with I > 2 (I). In this complex, the 1,2,3-triazole-carboxylic acid ligand, which only supplies a carboxylic anion to coordinate with Zn2+ ions, while the nitrogen atoms of 1,2,3-triazole dont coordinate with Zn2+ ions, the 4,4-bipyridine ligand serves as a linker to form a 1D chain structure, the abundant hydrogen bonding which plays an important role in forming 2D structure. Compared with free HPta and 4,4-Bipy, the intensity of fluorescence of Pta with Zn(OAc)2 and 4,4-Bipy with Zn(OAc)2 enhanced. However, the complex displays fluorescence quenching, which probably be caused by charge transfer which due to HPta and 4,4-Bipy mutual coordination with Zn(II).

  • SYNTHESIS, CRYSTAL STRUCTURE, AND MAGNETIC PROPERTIES OF BINUCLEAR COBALT(II) COMPLEX WITH 2-(5-{6-[5-(PYRAZIN-2-YL)-1H-1,2,4-TRIAZOL-3-YL]- PYRIDIN-2-YL}-1H-1,2,4-TRIAZOL-3-YL)PYRAZINE

    HUANG X.Y., JIANG Q.Q., WANG J.L., ZHANG S.C., ZHAO J.S. — 2015 г.

    The synthesis and crystal structure of a new Co(II) compound with 2-(5-{6-[5-(pyrazin-2-yl)-1H-1,2,4-triazol-3-yl]-pyridin-2-yl}-1H-1,2,4-triazol-3-yl)pyrazine (H2Ptptp) are reported. The new compound [Co2(Ptptp)Cl2(H2O)2] · H2O (I) has been determined by single-crystal X-ray diffraction (CIF file CCDC no. 1 010 785) and characterized by elemental analyses and infrared spectrum. The structure I consists of two independent Co2+ ions, one Ptptp2 anion, two Cl- anions, two coordinated H2O molecules and one lattice H2O molecule. The three-dimensional (3D) supramolecular architecture is formed through the hydrogen bonds among adjacent units. Moreover, magnetic susceptibility measurements indicate that the compound exhibits weak antiferromagnetic coupling interaction.

  • SYNTHESIS, CRYSTAL STRUCTURE, AND POROSITY OF 1D COORDINATION POLYMER OF NEODYMIUM(III) WITH ISONICOTINIC ACID AND DIMERIC COMPLEX OF NEODYMIUM(III) WITH NICOTINIC ACID

    KARIEM M., SHARMA S., SHEIKH H.N., SINGH R., YAWER M. — 2015 г.

    A 1D coordination polymer [Nd3(INA)9(H2O)6]n (I) and a dimeric complex with mononuclear asymmetric unit [Nd(NA)3(H2O)2] (II) (HINA = isonicotinic acid and HNA = nicotinic acid) were synthesized. The compounds were characterized by elemental analyses, infrared spectroscopy and single crystal X-ray diffraction studies (CIF file CCDC nos. 938 976 (I) and 939 061(II). X-ray crystal structure analysis reveals that both compounds exhibit rich structural chemistry. Compounds I and II belong to the monoclinic system with space group P21/c. Thermogravimetric analysis has been performed to investigate their thermal stability. The coordination polymer I has meso-porous structure with average diameter of pores ( 4 nm) and BET surface area 13.62 m2/g.

  • SYNTHESIS, CRYSTAL STRUCTURE, AND PRELIMINARY ANTIBACTERIAL ACTIVITY OF OXOVANADIUM(V) COMPLEX WITH HYDRAZONE LIGAND

    DING Y., HAN X., LI W. — 2015 г.

    = 0.1045. The V atom in complex I is in an octahedral coordination. Thermal analysis and preliminary antibacterial activity of complex I were studied. with unit cell dimensions a = 10.117(1), b = 10.609(2), c = 11.454(2) A, = 99.228(2)°, = 112.250(2)°, = 100.561(2)°, V = 1082.3(3) A3, Z = 2, R1 = 0.0512, and wR2 = 0.1045. The V atom in complex I is in an octahedral coordination. Thermal analysis and preliminary antibacterial activity of complex I were studied.

  • SYNTHESIS, CRYSTAL STRUCTURE, AND THERMAL PROPERTIES OF THREE NOVEL COMPLEXES BASED ON 2,3-PDC

    HUANG Y.F., LIU Y., SHI Z.W., XIAO H., YIN X.H. — 2015 г.

    Three new metal-organic complexes, [Cd4(2,3-Pdc)4 · 4H2O] (I), [Fe4(2,3-Pdc)4 · 12H2O] (II), [Ba8(2,3-Pdc)4 · 12H2O] (III) (2,3-Pdc = 2,3-pyridinedicarboxylic acid), have been synthesized and characteristic by IR spectrum, elemental analysis, single-crystal X-ray diffraction, thermogravimetric analysis. X-ray structure analysis shows that complex I is 3D structure, complex II and complex III are 1D chain structures (CIF files CCDC nos. 1 002 757 (I), 1 002 888 (II) and 1 002 980 (III)). 2,3-Pdc has many kinds of coordination mode, so it can form many different of coordination polymers. Complexes can be packed by the weak C–H···O, N–H···O and interactions.

  • SYNTHESIS, CRYSTAL STRUCTURE, PROPERTIES, AND NUCLEASE ACTIVITY OF A NEW CU(II) COMPLEX [CU(L)2(PY)2(H2O)] (HL = N-(5-(4-METHYLPHENYL)-[1,3,4]-THIADIAZOLE-2-YL)TOLUENESULFONAMIDE)

    HANGAN A.C., OPREAN L.S., STAN R.L., STEFAN R., TURZA A. — 2015 г.

    A new N-sulfonamide ligand, N-(5-(4-methylphenyl)-[1,3,4]-thiadiazole-2-yl) toluenesulfonamide (HL) and its Cu(II) complex [Cu(L)2(Py)2(H2O)] (I), have been synthesized. The X-ray crystal structure of the ligand and of complex I have been determined (CIF files CCDC nos. 975153 (HL), 851790 (I)). In I, the Cu2+ ion is five-coordinated, forming a CuN4O chromophore. The ligand acts as monodentate, coordinating the metal ion through a single Nthiadiazole atom. The molecules from the reaction medium (pyridine and water) are also involved in the coordination of the Cu2+ ion. Complex I has a slightly distorted square pyramidal geometry. The complex was characterized by FT–IR, electronic, EPR spectroscopic and magnetic methods. The nuclease activity studies of the synthesized complex confirm his capacity to cleavage the DNA molecule. The ligand has two important roles in the nuclease activity of I: it influence the reactivity of the Cu2+ ion and interact with DNA molecule. The complex interacts with the DNA molecule. Immediately, the Cu2+ ion is reduced to Cu(I), and in the presence of molecular oxygen the formed Cu(I) complex produces reactive oxygen species in close proximity to the double helix.

  • SYNTHESIS, CRYSTAL STRUCTURES, AND ANTIBACTERIAL PROPERTY OF TRIS[2-(5-BROMOSALICYLIDENEAMINO)ETHYL]AMINE AND ITS MANGANESE(III) COMPLEX

    HAO Y.M. — 2015 г.

    A tripodal Schiff base tris[2-(5-bromosalicylideneamino)ethyl]amine (H3L) was prepared by the reaction of 5-bromosalicylaldehyde with tris(2-aminoethyl)amine. Reaction with the Schiff base with manganese perchlorate in methanol resulted a mononuclear manganese(III) complex (I). The crystal structures of the Schiff base and the complex have been determined by single crystal X-ray diffraction (CIF files CCDC nos. 1 007 902 (H3L); 1 007 983 (I)). The Schiff base coordinates to the Mn atom through all the phenolate O and imino N atoms. The Mn atom of the complex is in octahedral coordination. The antibacterial properties have been tested on some bacteria and yeast.

  • SYNTHESIS, CRYSTAL STRUCTURES, LUMINESCENT PROPERTIES, THEORETICAL CALCULATION, AND DNA INTERACTION OF THE CADMIUM(II) AND LEAD(II) COMPLEXES WITH O-AMINOBENZOIC ACID AND 1,10-PHENANTHROLINE

    BI C.F., FAN Y.H., HUANG G.M., YAN X.C., ZHANG P.F., ZHANG X., ZHANG Z.Y. — 2015 г.

    Two complexes, namely [Cd(Phen)(o-AB)2] (I) and [Pb(Phen)(o-AB)] (II) (Phen = 1,10-phenanthroline, o-AB = o-aminobenzoic acid), have been synthesized and characterized by elemental analysis and X-ray diffraction single-crystal analysis (CIF files CCDC nos. 910 307 (I), 898 292 (II)). Complex I is six coordinated by two nitrogen and four oxygen atoms from the Phen and o-AB to furnish a distorted octahedral geometry. Complex II is six coordinated by two nitrogen and four oxygen atoms from the Phen and o-AB to furnish an umbrella-like geometry. The complexes exhibit intense fluorescence at room temperature. The interaction between complex I and calf thymus DNA was also investigated by UV absorption spectra, fluorescence emission spectra and viscometry. The nature of the binding seems to be mainly an electrostatic interaction between DNA and complex I. Theoretical studies of the title complexes were carried out by density functional theory (DFT) B3LYP method.

  • SYNTHESIS, STRUCTURAL CHARACTERIZATION, AND PROPERTIES OF A CD(II) COMPLEX WITH A CARBOXYLATE- AND BENZIMIDAZOLYL-CONTAINING LIGAND

    DAI C.H., MAO F.L. — 2015 г.

    The hydrothermal reaction of cadmium salt with 3,5-bis(benzimidazol-1-ylmethyl)benzoic acid (HL) forms a new complex [Cd(L)2] · 3H2O (I). This complex has been characterized by single-crystal X-ray diffraction, IR, elemental and thermogravimetric analyses and shows 3D flu framework structure with 2-nodal (3,6)-connected (42.6)2(44.62.89) topology. Luminescent property of I was investigated. Moreover, single crystals of HL were obtained accidentally in the hydrothermal reaction of the HL with MnSO4 at 160°C, and its crystal structure has been characterized by single-crystal X-ray diffraction (CIF files CCDC nos. 1020274 (HL) and 1020275 (I)).

  • SYNTHESIS, STRUCTURE, AND CATALYTIC OXIDATION OF A MOLYBDENUM(VI) COMPLEX [MOO2(CH3OH)L]

    LIU H.Y., LV J.L., ZANG L.Q. — 2015 г.

    = 0.0796, S = = 1.060. The Mo atom in the complex is in an octahedral coordination with phenolate O, imino N, enolate O atoms of the ligand L, and one oxo O in the equatorial plane, and with one methanol O and the other oxo O in the axial sites. Crystals of the complex are stabilized by hydrogen bonds. The complex was studied for its catalytic oxidation property on some olefins, with tert-butyl hydrogen peroxide as oxidant. with unit cell dimensions a = 6.9824(9), b = 10.206(1), c = 15.302(2) A, = 94.399(2)°, = 101.877(2)°, = 104.062(2)°, V = 1025.9(2) A3, Z = 2, R1 = 0.0317, wR2 = 0.0796, S = = 1.060. The Mo atom in the complex is in an octahedral coordination with phenolate O, imino N, enolate O atoms of the ligand L, and one oxo O in the equatorial plane, and with one methanol O and the other oxo O in the axial sites. Crystals of the complex are stabilized by hydrogen bonds. The complex was studied for its catalytic oxidation property on some olefins, with tert-butyl hydrogen peroxide as oxidant.