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

AN M., FU F., GAO L., REN Y., WANG J., ZHANG M. — 2015 г.

Two isomeric Mn(II) complexes, [Mn(IDP)SO4 · 2H2O]n (I) and {[Mn(IDP)SO4 · H2O] · H2O}n (II), have been prepared by solvo-thermal reactions of imidazo-[4,5-f]-1,10-phenanthroline (IDP) ligand with manganese sulfate. The crystal structures of IDP, complexes I and II are characterized by single-crystal X-ray diffusion analyses (CIF files CCDC nos. 988128 (IDP), 988129 (I), and 988130 (II)). The structural analyses show that there are H-bonds and stacking interactions resulting in the 3D supramolecular structure for IDP. Complex I exhibits 1D chain-like structure featuring the left- and right-handed helical chains, while in II, the 1D structure is a ladder-like structure. The stacking interactions take an important role in the formation of supramolecule structures for complexes HL, I, II due to the large conjugated system of IDP ligand. The IR and UV-Vis absorption spectra of complexes I and II exhibit the difference, but the liquid-state photoluminescence of I and II is similar attributing to the intraligand * transition.

HUO Y., QIAN S.S., YE Y.T., YOU Z., ZHU H.L. — 2015 г.

Two new 8-hydroxyquinoline coordinated vanadium(V) complexes, [VO(L1)(L] (I) and [VO(L2)(L] (II), where L1 is the dianionic form of 2-[(2-hydroxyethylimino)methyl]-6-methylphenol (H2L1), L2 is the dianionic form of N-(4-oxopentan-2-ylidene)pivalohydrazide (H2L2), L is the monoanionic form of 8-hydroxy-quinoline (HL), were prepared and characterized by elemental analysis, infrared, UV-Vis and 1H NMR spectra, and single crystal X-ray diffraction (CIF files CCDC nos. 1012078 (I) and 1012077 (II)). Complex I crystallizes in the monoclinic space group P21/n with unit cell dimensions a = 16.120(1), b = 6.9952(5), c = 16.128(1) A, = 106.948(2)°, V = 1739.6(2) A3, Z = 4, GOOF = 1.127, R1 = 0.0464 and wR2 = 0.1172. Complex II crystallizes in the orthorhombic space group Pna21 with unit cell dimensions a = 13.512(2), b = 9.606(1), c = 31.081(4) A, V = 4034.3(8) A3, Z = 8, GOOF = 1.044, R1 = 0.0604 and wR2 = 0.1038. The V atoms in the complexes are in octahedral coordination. Thermal stability of the complexes was studied.

CHEN J.L., FENG X., GUO J.Z., LUO G.Y., WANG L.Y. — 2015 г.

A novel binuclear iron(III) Schiff base complex [ ] · H2O (I) (NO2-Salpn = 5-nitrosalicylaldehyde-1,3-propanediamine) has been obtained through one-pot refluxing and condensation. Complex I was established by single-crystal X-ray diffraction analysis (CIF file CCDC no. 1005239) and further characterized by elemental analysis, IR spectroscopy, electrochemical and magnetochemical measurements. Complex I consists of two pseudooctahedral high-spin iron(III) units doubly bridged by two hydroxyl groups. The inter hydrogen bonding interactions connect the adjacent binuclear units into one dimensional (1D) infinite chain, and these 1D chains are further propagated into the two dimensional (2D) supramolecular network by weak intermolecular interactions. Variable temperature magnetic measurements indicate the presence of strong antiferromagnetic interactions between the two adjacent iron(III) ions.

HU X.M., XUE L.W., YANG W.C., ZHAO G.Q. — 2015 г.

A new hetero trinuclear manganese(III)-iron(II) complex, [Mn(ClSalen)(H2O)]2[Fe(CN)5(NO)] · CH3OH · · H2O, where ClSalen is the dianionic form of N,N-bis(5-chlorosalicylidene)-1,2-diaminoethane, has been prepared and characterized by elemental analyses, IR, and single crystal X-ray crystallographic determination (CIF file CCDC no. 1024666). The crystal of the complex is orthorhombic: space group Pca21, a = 27.784(2), b = 10.8876(6), c = 15.1755(8) A, V = 4590.5(4) A3, Z = 2, R1 = 0.0596, wR2 = 0.1406. The bis-Schiff base ligand coordinates to the Mn atom through two phenolate O and two imine N atoms. Each Mn atom in the complex is in octahedral coordination, with the equatorial donor atoms come from the Schiff base ligand, and with the axial donor atoms come from a water O atom and a cyanide N atom. The effects of the complex on the antimicrobial activity against Staphylococcus aureus, Escherichia coli, and Candida albicans were studied.

WANG F.M., WU X.R. — 2015 г.

A new complex with chemical formulae [Cd2(L)(IP)4(H2O)2 · L · 4H2O] (I) (H2L = terephthalic acid, IP = 1-H-imidazo[4,5-f][1,10]-phenanthroline) has been synthesized and structurally characterized by single-crystal X-ray diffraction analysis (CIF file CCDC no. 1004954). The structural determination revealed that I has a dimeric motif, which can be further linked into 2D network via the three different hydrogen bonding interactions. In addition, the luminescent behavior of compound I was also explored.

GAO E.J., JIN H.T., LIANG S.K., MA C., MA X.Y., MENG Y., ZHAO F.C., ZHU M.C. — 2015 г.

A novel Mn coordination polymer, {[Mn2(L)6] · 2H2O}n, has been synthesized by the reaction of C4H6MnO4 · 4H2O (manganese acetate) with 3-(2,5-dicarboxyl)-5-carboxylpyridine (L). Elemental analysis, IR spectra, thermal analyses, and X-ray single crystal diffraction (CIF file CCDC no. 1061752) were carried out to determine the composition and crystal structure of the complex. The polymer was characterized by UV spectrum, fluorescence spectrum showing that the complex has the ability of interaction with DNA, Gel electrophoresis assay demonstrated the ability of the complex to cleave the HL-60 DNA (HL-60 DNA, which was extracted by ourselves). Further more, the apoptotic test indicates that the complex has an apoptotic effect on JEKO.

LI L., SONG L., YANG T., YIN X.J., ZHOU X.H. — 2015 г.

The title coordination polymer, [Cd2(HPdc)1.5Cl(H2O)2]n (I) (H3Pdc = 3,5-pyrazoledicarboxylic acid), has been hydrothermally synthesized and structurally characterized by single-crystal X-ray diffraction (CIF file CCDC no. 1037505). Complex I crystallizes in orthorhombic space group Pbcn with a = 10.2631(11), b =17.1997(18), c = 14.3044(15) A, V = 2525.0(5) A3, C15H14Cd4Cl2N6O16, M = 1054.82, c = 2.775 g/cm3, (MoK ) = 3.627 mm-1, F(000) = 2000, GOOF = 1.067, Z = 4, the final R1 = 0.0562 and wR2 = 0.1301 for I > 2 (I). The Cd(1) ions and HPdc2 ligands connect to form a serial of the 2D corrugated 63 sheets packing parallel along the z axis. Each 63 sheet is connected with the two neighboring sheets by the Cl- and Cd(2) ions to construct the 3D framework of I. The 3D structure can also be rationalized as a 4-connected trinodal (4.5.72.8.9)(4.52.62.7)(4.5.6.73) topological network (the long Schlafli symbol is (4.5.7.7.102)(4.124.5.6.5.7)(4.5.6.7.7.7)) by considering the Cd(1), Cd(2) ions and HPdc2 ligands as 4-connected nodes, the Cl- ions as linkers, respectively.

JI B.M., MIAO B., ZHOU L. — 2015 г.

Three Cu(II) coordination polymers, namely {[Cu(Dtb)(H2O)](SO4)(H2O)}n (I), {[Cu(Dtb)(C2O4)(H2O)](H2O)2}n (II), and {[Cu(Dtb)(NO3)](NO3)(H2O)2}n (III) (Dtb = 1,3-di-(1,2,4-triazole-4-yl)benzene), have been synthesized under hydrothermal conditions and characte-rized by elemental analyses, IR spectra, and single-crystal X-ray diffraction (СIF file CCDC nos. 1 001 347 (I); 1 001 348 (II); 1 001 349 (III)). Complex I is a 1D double-chain structure, Dtb acts as -bridging ligand and SO does not participate in coordination. In contrast, complex II shows a 1D single-chain, in which Dtb shows -bridges mode and occupies two coordination positions. In complex III, shortens the distance of two Cu(II) centers by bridging coordination interaction, so Dtb becomes -bridges linker to extend the Cu(II) centers to the resulting 2D layer.

ANDREEV V.N., EMETS V.V., GERASIMOV V.K., GRINBERG V.A., MATVEEV V.V., MAYOROVA N.A., NIZHNIKOVSKIY E.A., PASYNSKII A.A., SHIRYAEV A.A., VYSOTSKII V.V. — 2015 г.

Nanosized mixed-metal platinum–iron, platinum–manganese and platinum–nickel catalysts supported on highly dispersed carbon black are synthesized by using of the corresponding metal complexes with the atomic metal ratio of 1 : 1. The obtained catalysts are characterized by X-ray phase diffraction and scattering analysis, electron dispersion analysis, scanning and transmission electron microscopy. Thin film rotating disk electrode technique was used to study kinetic parameters of the oxygen reduction reaction at these catalysts. It has been demonstrated that electrochemical activity of the prepared catalysts is comparable to that of a commercial Е-Тek platinum catalyst. The membrane electrode assembly (MEA) with the synthesized platinum-iron catalyst was tested in a laboratory hydrogen-air fuel cell setup at room temperature. It was shown that the power performance of MEA was twice better than that of of MEA on the base of a commercial Pt/C E-Tek catalyst.

SUN Y.Q., XIN N., ZHENG Y.F. — 2015 г.

A novel heterometallic coordination polymer {[Cd2(NiL)2(Btca)4] · H2O}n (I) (H2L = 2,3-dioxo-5,6,14,15-dibenzo-1,4,8,12-tetraazacyclo-pentadeca-7,13-dien, H2Btca = benzotriazole-5-carboxylic acid) was synthesized and structurally characterized by elemental analysis, IR spectroscopy and single crystal X-ray diffraction (CIF file CCDC no. 1043065). Complex I exhibits a two-dimensional network structure formed by Cd2Ni2 units via the oxamide and benzotriazole-5-carboxylate bridges. It crystallizes in the monoclinic system, space group P21/c. The lattice parameters are: a = 1.24488(8), b = 2.75370(19), c = 1.49336(10) A, = 103.1070(10)° and V = 4.9859(6) A3, Z = 4. The fluorescence properties of compound I are also discussed.

KUMAR A., LIU J.Q., WANG J., WU W.P., WU X.R. — 2015 г.

A new Zn-based complex with oxalate, namely [NH2(CH3)2][Zn(Ox)1.5] · DMF · H2O (I) (Ox = oxalate), has been synthesized and structurally characterized. Single-crystal X-ray analysis of compound I reveals that the Ox ligand links the Zn(II) center, generating an intricate 2D classical honeycomb-like architecture (CIF file CCDC no. 1028787). The detail analyses of Hirschfeld surface and fingerprint plots gave a mode of non-covalent interactions in the title compound.

CHEN M.S., FU W.W., KUANG D.Z., LI W., LIU Y., ZHANG F.X. — 2015 г.

Three manganese coordination compounds, [Mn(Meophtpy)2] · 2ClO4 (Meophtpy = 4-(4-methoxylphenyl)-2,2:6,2-terpyridine) (I), [Mn(Ftpy)2](ClO4)2 (Ftpy = 4-(2-furyl)-2,2:6,2-terpyridine) (II) and [Mn(m-ClPhtpy)2] · 2ClO4 (m-ClPhtpy = 4-(3-chlorophenyl)-2,2:6,2-terpyridine) (III), have been synthesized by hydrothermal methods and characterized by IR, elemental analysis, powder and single-crystal X-ray diffraction analyses (CIF files CCDC nos. 945 032 (I), 945 033 (II), 945 034 (III)). In most cases, the face-to-face interactions between pyridyl rings or phenyl rings facilitate the construction of 3D network in the crystal for all three complexes. The magnetic properties of three complexes have been investigated.

DUSEK M., EIGNER V., GRIVANI G., KHALAJI A.D., SADEGHI B. — 2015 г.

А new ( -acetato)-bridged dinuclear copper(II) complex [Cu2(L)2( -OAc)2] (I) has been synthesized by the reaction of a tridentate N2O Schiff base ligand (HL) with Cu(OAC)2 in methanol at refluxed conditions and characterized by elemental analyses (CHN) and FT-IR spectroscopy. The crystal structure of I was investigated by single-crystal X-ray diffraction (CIF file CCDC no. 1013907). X-ray results showed that two OAC groups bridge the copper(II) ions in a Cu2O2 core of a binuclear complex. Each copper(II) ion adopts a distorted square-pyramidal geometry with one imine nitrogen, one amine nitrogen and one phenolato oxygen from the tridentate Schiff base ligand, completed by two acetate oxygen atoms. Finally, the complex was thermally decomposed in order to obtain CuO nano-particles. The particles were characterized by powder X-ray diffraction, which confirmed the formation of the CuO nano-particles with the average size of 24 nm.

HU J.R., LI Y.H., PENG H.N., XIE J.L., XING Z.S., YE H.D., YE Q. — 2015 г.

Treatment of o-carborane, n-butyllithium, sulfur, and MeCpCo(CO)I2 under argon leads to two MeCp-cobalt complexes MeCpCoS2C2B10H10 (I) and (MeCp)2Co2S2C2B10H10 (II). Complex I reacts with phenylacetylene or dimethyl acetylene dicarboxylate to afford B–H activitied complex (MeCpCoS2C2B10H9)(Ph C CH2) (III) and addition complex (MeCpCoS2C2B10H10)(MeO2C C = C CO2Me) (IV), respectively. Complex II reacts neither with phenylacetylene nor with dimethyl acetylene dicarboxylate. Complexes II–IV have been characterized by elemental analysis, mass, NMR spectroscopy, IR, and X-ray structural analyses (CIF files CCDC nos. 1045892 (II), 1045893 (III) and 1045894 (IV)).

DONG C., GUO Y., MA Q., SHUANG S.M., SONG J.P. — 2015 г.

Two new complexes [Co(Pdon)(SCN)2(H2O)2] (I) and [Hg(Pdon)2Br2] (II) (Pdon = 1,10-phenanthroline-5,6-dione) have been synthesized and characterized by element analysis, IR and single crystal X-ray diffraction (CIF files CCDC nos. 793904 (I) and 783209 (II)). Compounds I and II are mononuclear complexes obtained by the self-assembly of Pdon, SCN- and metal ion Co2+ and Hg2+, which are further in close contacted forming a two dimensional supramolecular framework via O–H···S and O–H···O hydrogen bonding interactions interactions between adjacent molecules.

QIU X.Y., WANG N. — 2015 г.

A novel centrosymmetric dinuclear zinc(II) complex, [Zn2L2], was prepared from 2-bromo-6-[(3-cyclohexylaminopropylimino)methyl]phenol (H2L), 3,5-dichlorosalicylaldehyde, and zinc acetate under solvolthermal conditions. There occurs a rarely-seen 1,3-hydride shift reaction during the process. Structure of [Zn2L2] has been characterized by elemental analysis, IR spectra, and single crystal X-ray diffraction (CIF file CCDC no. 956057). The Zn···Zn separation is 3.163(1) A. Each Zn atom in the complex is in a trigonal-bipyramidal coordination. Thermal stability and fluorescence property of [Zn2L2] were studied. The complex displays intraligand * fluorescence and can potentially serve as photoactive material.

QIU X.Y., WANG N. — 2015 г.

A new dinuclear zinc(II) complex, [Zn2Br2L2] (I), was prepared from 4-methyl-2-[(2-methylaminoethyl-imino)methyl]phenol (HL) with zinc bromide in methanol. Self-assembly of I with ammonium thiocyanate in methanol afforded the mononuclear complex [Zn(L)(HL)]2[Zn(NCS)4] (II). Structures of complexes I, II have been characterized by elemental analysis, IR spectra and single crystal X-ray diffraction (CIF files CCDC nos. 1046617 (I), 1046618 (II)). Complex I possesses a crystallographic two-fold rotation axis symmetry, with Zn···Zn separation of 3.106(1) A. Complex II contains two mononuclear zinc(II) complex ca-tions and one [Zn(NCS)4] complex anion. The Zn(1) atom in I is in a tetrahedral coordination. The Zn(2) atom in I and the Zn atoms in II are in octahedral coordination. Crystals of I, II complexes are stabilized by hydrogen bonds.

CHEN Z.N., LI G., LI Z.F., WANG F. — 2015 г.

Based on two promising p-CPhH4IDC and o-CPhH4IDC ligands, one 2D coordination polymer, [Ca(p-CPhH2IDC)(H2O)]n (p-CPhH4IDC = 2-(4-carboxylphenyl)-1H-imidazole-4,5-dicarboxylic acid) (I) and one novel dimeric complex, [Cd2(o-CPhH2IDC)2(H2O)6] · 4H2O (o-CPhH4IDC = 2-(2-carboxylphenyl)-1H-imidazole-4,5-dicarboxylic acid) (II) have been hydrothermally synthesized and structurally characterized by elemental analyses, IR spectroscopy, and single crystal X-ray diffraction (CIF files CCDC nos. 929826 (I), 959841 (II)). Polymer I exhibits a graceful 2D grid sheet structure. Polymer II is a binuclear complex in which two Cd2+ ions are bridged by two carboxyates from two o-CPhH2IDC2 ligands. Four and two types of coordination environments around the Ca and Cd atoms, respectively can be observed. Furthermore, the solid-state photoluminescence and thermal properties of the two complexes have been investigated.

KUMAR A., LU L., MA A.Q., WANG J., WU W.P., WU Y., XIE B. — 2015 г.

Three new complexes, namely {[Ln(L)3(2,2'-Bipy)]n · 2H2O} (Ln = Pr (I), Sm (II) and Nd (III)) (HL = 3-(4-hydroxyphenyl)propanoic acid), have been synthesized and structurally characterized by single-crystal X-ray diffraction analyses (CIF files CCDC nos. 1045041 (I), 1045042 (II), 1045043 (III)). The structural determination revealed that I–III have similar dinuclear motifs, which can be further linked into 1D chain via the hydrogen bond interactions. Furthermore, the luminescent properties of I–III show the strong emissive power and feature.

LU L., MA A.Q., WU W.P., WU Y., XIE B. — 2015 г.

A organic compound and its lanthanide coordination polymer with chemical formulae HL1, {[La(L1)3(H2O)2] · 2H2O · 2,2-Bipy} (I), (HL1 = 3-(4-hydroxyphenyl)propanoic acid, 2,2-Bipy = 2,2-bipyridine) have been synthesized and structurally characterized. Organic compound HL1 shows 1D supramolecular chain constructing from intermolecular hydrogen-bonded interaction. Complex II has 1D infinite chain with a [La(L1)3]n dimeric repeat unit with lanthanide in a nine-coordinate environment. Furthermore, the luminescent properties of the two compounds were discussed in detail (CIF files CCDC nos. 1045032 (HL1), 1045033 (I)).