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《Journal of Coordination Chemistry》2012,65(8):1313-1319
[Zn(Ofl) · (H2O)] · 2H2O (1) and [Co(Enox)2] · 4H2O (2) were obtained by hydrothermal reactions. The solid-state structures have been characterized by IR spectroscopy and single crystal X-ray diffraction analyses. Complex 1 crystallizes in the triclinic system, space group P 1, with lattice parameters a = 9.2923(5), b = 11.3432(6), c = 17.7722(10) Å, α = 92.839(3), β = 94.826(3), γ = 91.909(3)°, V = 1863.01(18) Å3, Z = 2, D Calcd = 1.494 mg m?3. The coordination environment around Zn2+ is a slightly distorted square pyramid. Complex 2 crystallizes in the triclinic system, space group P2(1)/c, with lattice parameters a = 5.97980(10), b = 21.4183(3), c = 13.1539(2) Å, V = 100.2810(10), Z = 2, D Calcd = 1.526 mg m?3, Co(II) ion is a distorted octahedral geometry. 相似文献
3.
Bis(4-dimethylaminopyridine) group 12 trifluoroacetates—M(OCOCF3)2·2DMAP (M=Zn, Cd, Hg) were prepared in quantitative yields from the anhydrous metal trifluoroacetates and DMAP. All compounds crystallize in the triclinic space group (no. 2) with two molecules per unit cell. While Zn(OCOCF3)2·2DMAP is built up by well-separated tetrahedral units exhibiting strongly covalent ZnO bonds to monodentate trifluoroactate groups, Cd(OCOCF3)2·2DMAP and Hg(OCOCF3)2·2DMAP form dimeric units. The metal centers are distorted octahedrally surrounded by two axial DMAP ligands, two ionic bridging and one chelating trifluoroacetate group. 相似文献
4.
Olga A. EfremovaYuri V. Mironov Natalia V. KuratievaVladimir E. Fedorov 《Polyhedron》2011,30(8):1404-1411
The reactions of aqueous solutions of the tetrahedral cluster anions [Re4Q4(CN)12]4− (Q = S, Se) with lanthanide chlorides resulted in the crystallization of the formed compounds into two main structural types [{Ln(H2O)4(H2O)2/3Cl1/3}3{Re4Q4(CN)12}2]·2H2O (Ln = La-Gd, Q = S, Se) and K0.5(H)0.5[{Ln(H2O)4}{Re4S4(CN)12}]·nH2O or (H)[{Ln(H2O)4}{Re4Se4(CN)12}]·nH2O (Ln = Tb-Lu). Compounds of the first type crystallize in the hexagonal crystal system (space group Р63/m) and they have a three-dimensional polymeric structure; compounds of the second type crystallize in the orthorhombic crystal system (space group Cmcm) and they have a two-dimensional crystal structure due to the polymeric anion {[{Ln(H2O)4}{Re4Q4(CN)12}]−}∞∞. 相似文献
5.
《Journal of Coordination Chemistry》2012,65(1):53-61
Abstract DMF (dimethylformamide) reacts with Gd(NO3)36H2O and K3Mn(CN)6 to afford a novel cyano-bridged complex [Gd(DMF)4(H2O)2Mn(CN)6] · H2O] n . The crystal structure of the complex (abbreviated as GdMn) has shown that it has a novel one-dimensional chain structure. The complex crystallizes in space group P21/c with a = 13.004(2), b = 12.762(2), c = 19.160(4) Å, β = 109.51(3)°, V = 2997.2(9) Å, Dx = 1.584 Mgm?3, Z = 4. Variable temperature (1.5–300K) magnetism shows there exists weak antiferromagnetic interaction between Gd and Mn atoms across the cyano bridge. 相似文献
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Summary Heterobimetallic complexes of the types [Cp2Ti(-EAr)2-M(dppe)] (ClO4)2 [(1)–(4); M, E = Ni, Te (1); Ni, Se (2); Pt, Te (3); Pt, Se (4); Ar = Ph (a), C6H4-4-Me (b), C6H4-4-OMe (c), C6H4-4-OEt (d)] and [Cp2Ti(-TeAr)2-MCl 2] [M = Pd (5), Pt (6)] were obtained by the reactions of Cp2Ti(EAr)2 with M(dppe)(ClO4)2 and M(PhCN)2Cl2, respectively. While (1), (5) and (6) are stable in the solid state as well as in solution, (2)–(4) undergo dissociation to M(dppe)(EAr)2 and Cp2Ti(ClO4)2 in solution, as shown by multinuclear (31P{1H},195Pt{1H}, 125Te{1H}) n.m.r. studies. The reaction of Cp2Ti(SeAr)2 with M(PhCN)2Cl2, however, leads to the formation of Cp2TiCl2 and a polymeric material [M(SeAr)2]
n
. 相似文献
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Ruibiao Fu 《Journal of solid state chemistry》2011,184(4):945-952
Hydrothermal reactions of ZnII, BaII or CoII ion with 2-hydroxyphosphonoacetic acid (H3L) afforded six metal phosphonates, namely, [Zn5(O3PCH(OH)CO2)4(C6H9N2)2] (1), [(C4H12N2)Zn5(O3PCH(OH)CO2)4(H2O)2] (2), [(C3H12N2)0.5Zn5(HO3PCH(OH)CO2)(O3PCH(OH)CO2)3(H2O)2]·0.75H2O (3), [BaZn2(O3P CH(OH)CO2)2] (4), [Ba(HO3PCH(OH)CO2)] (5) and [(NH4)2Co7(HO3PCH(OH) CO2)6(HPO4)2(H2O)6]·4H2O (6). In 1, zinc tetrahedra ([ZnO4]) and octahedra ([ZnO5N], [ZnO6]) are bridged by 2-hydroxyphosphonoacetate with penta- and hexadendate modes into a hybrid layer, which is further pillared by the 3-picolylamines to form a 3D structure through Zn-N bonds and hydrogen bondings. Both 2 and 3 are 3D framework encapsulating piperazine and 1,2-propanediamine cations, respectively. In solids 4-6, the cross-linkages of [ZnO4], [BaO10] and [CoO6] polyhedral with 2-hydroxyphosphonoacetate form 3D frameworks. Solids 3 and 4 behave thermally stable up to 250 and 300 °C under air atmosphere, respectively. It is interesting that the peak emission of solid 3 displays a 10 nm red-shift after simple heat-treatment. 相似文献
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《Journal of Coordination Chemistry》2012,65(15):1619-1627
Two luminescent zinc coordination complexes [Zn2(2-NBS-gly)4(H2O)4]?·?2H2O (1), and Zn(Im)2(2-NBS-gly)2 (2), (2-NBS-glyH?=?N-2-nitrobenzenesulfonyl-glycine acid, Im?=?imidazole) have been synthesized and their crystal structures determined by X-ray crystallography. The Zn(II) in 1 is a five-coordinate geometry and can be described as a slightly distorted square-pyramid; complex 2 is four-coordinate, forming a distorted tetrahedron. Through hydrogen bonding, complex 1 forms a 2-D network and complex 2 forms a zigzag chain. Fluorescent analyses show that both 1 and 2 exhibit photoluminescence in the solid state and may be potential candidates for photoactive materials. 相似文献
10.
Michael Neukirch Sonja Tragl H.‐Jürgen Meyer Torsten Küppers Helge Willner 《无机化学与普通化学杂志》2006,632(6):939-944
M[B(CN)4]2: Two new Tetracyanoborate Compounds with divalent Cations (M = Zn, Cu) The reaction of ZnO or CuO with [H3O][B(CN)4] in aqueous solution yielded single crystals of Zn[B(CN)4]2 and Cu[B(CN)4]2, respectively. The compounds were characterized by single‐crystal X‐ray diffraction. Zn[B(CN)4]2 ( (no. 164), a = b = 7.5092(9) Å, c = 6.0159(6) Å, Z = 1) crystallizes isotypic with Hg[B(CN)4]2. The structure of Cu[B(CN)4]2 (C2/m (no. 12), a = 13.185(3) Å, b = 7.2919(9) Å, c = 6.029(1) Å, β = 93.02(2)°, Z = 2) can be considered as a super‐structure, resulting from Jahn‐Teller distortion of the Cu2+ ions. Magnetic measurements were performed for the copper compound. Vibrational spectra and thermal stabilities were compared with the known mercury(II) tetracyanoborate. 相似文献
11.
《Journal of Coordination Chemistry》2012,65(17):3007-3018
Syntheses, structures, and antimicrobial activities of cobalt(III) complexes with two tetradentate Schiff-base ligands, (BA)2en?=?bis(benzoylacetone)ethylenediimine dianion and (acac)2en?=?bis(acetylacetone)ethylenediimine dianion, and two axial pyridines (py) have been investigated. These complexes were characterized by FT-IR, 1H-NMR, UV-Vis spectroscopy, and elemental analysis. The crystal structures of the complexes were determined by X-ray crystallography. Single-crystal X-ray diffraction analyses revealed that both complexes have distorted octahedral environments, Schiff-base ligand coordinates cobalt in four equatorial positions, and the two axial positions are occupied by pyridines. The pyridines and Schiff-base ligands are involved in N–H···O hydrogen bonds with perchlorate. Biological activities of the ligands and metal complexes have been studied on Staphylococcus aureus, Escherichia coli, and Bacillus subtilis by the well diffusion method. The activity data show the metal complexes to be more potent than the parent ligand against two bacterial species. 相似文献
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The crystal structures of two square tetracyanocomplexes were determined. [Ni(dien)2][Ni(CN)4]·2H2O (NDNCH) and [Ni‐(dien)2][Pd(CN)4] (NDPC) (dien = diethylene triamine) exhibit ionic structures consisting of mer‐[Ni(dien)2]2+ cations and [Ni(CN)4]2‐ or [Pd(CN)4]2‐ anions, respectively. Moreover, the structure of NDNCH is completed by two water molecules of crystallisation. In both compounds hydrogen bonds contribute to the stabilisation of the structure. NDNCH dehydrates on air quickly yielding anhydrous [Ni(dien)2][Ni(CN)4] (NDNC). Its thermal decomposition proceeds in a complicated process followed by aerial oxidation of metallic nickel to NiO. 相似文献
13.
Yun Yang Li Zhang Lang Liu Guangfei Liu Jixi Guo Dianzeng Jia 《Structural chemistry》2007,18(6):909-915
Three new manganese complexes, [Mn(PPeAP-INH)(CH3OH)2]n(CHCl3) (1) [PPeAP-INH=N-(1-phenyl-3-phenylethyl-4-ethylene-5-pyrazolone isoniazid, INH = isoniazid], [Mn2(PM4MbP-INH)2(CH3OH)4](CH3OH) (2·CH3OH), [PM4MbP-INH=N-(1-phenyl-3-methyl-4-(p-methylbenzoylene)-5-pyrazolone) isoniazid)] and [Mn2(PPePeP-INH)2(CH3OH)4] (3) [PPePeP-INH=N-(1-phenyl-3-phenylethyl-4-phenylethylene-5-pyrazolone) isoniazid] have been prepared, aiming at the formation
of extended coordination polymer with Mn(II) ions. Formation of the corresponding manganese-ligand complexes has been monitored
and characterized by chemical and spectroscopic techniques. X-ray diffraction analyses of available single crystals revealed
1D polymeric patterns of supramolecular system. Among them, the dimers of 2 and 3, bridged by two methanol molecules, are extended by hydrogen bond of O–H···N to form the 1D chain. In these three new complexes
which are all octahedral coordination environments, the N(5) atom of the pyridine heterocycles plays a very important role
in building the bridged polymeric chain. 相似文献
14.
You-Gui Huang You-Fu Zhou Da-Qiang Yuan Ben-Lai Wu Fei-Long Jiang Mao-Chun Hong 《Journal of Molecular Structure》2007,830(1-3):85-93
Two new complexes [Ni(pydc)(H2O)2]n (1) and [Ni2(pydc)2(H2O)5]n (2) (H2pydc = 2,4-pyridinedicarboxylic acid) have been obtained by hydrothermal synthetic method and characterized by single crystal X-ray analysis. In 1 six-coordinate Ni(II) ions are coordinated by pydc ligands to form 2-D layer structures; while in 2 six-coordinate Ni(II) ions are only connected into 1-D zigzag chains constructed by dinuclear nickel units. Although the coordination geometries around Ni(II) centers in both complexes are similar, their structure topologies are greatly tuned by coordination modes of pydc. Variable temperature magnetic susceptibility studies have shown that both compounds 1 and 2 may display antiferromagnetic coupling between paramagnetic metal centers mediated by bridging carboxylate groups. 相似文献
15.
《Journal of Coordination Chemistry》2012,65(4):409-419
Five-coordinate Schiff-base Zn complexes (1,2-cyclohexanediamino-N,N′-bis(salicylidene)) zinc-pyridine 1 and (1,2-cyclohexanediamino-N,N′-bis(3,5-di-tert-butylsalicylidene)) zinc-pyridine 2 were synthesized and the structures of 1 and 2 have been determined by single-crystal X-ray analysis. All Zn atoms are five-coordinate in both structures. Both complexes exhibit interesting structures based on intermolecular π–π stacking and hydrogen bond interactions. Complex 1 has a one-dimensional molecular chain structure via π–π stacking interaction, while complex 2 has an interesting lattice structure (with cavities with dimensions 10.9?×?6.9?Å) formed through intermolecular π–π stacking and hydrogen bond interactions. 1 and 2 are compared and characterized by MS, elemental analysis, IR, UV-Vis and Photoluminescence (PL). Fluorescence spectra show that the maximal emission wavelength of 1 and 2 are 454?nm, and 480?nm, respectively, upon radiation by UV light. Cyclic voltammetry performed on 1 and 2 indicate a dependence of the cathodic potentials upon conformational and electronic effects. Electronic spectral properties of 1 and 2 were studied by TD-DFT methods. The fluorescent emission of these complexes originates from ligand-centred π–π? transitions. The Zn (II) centres play a key role in enhancing the fluorescent emission of the ligands. 相似文献
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一维链状冠醚配合物[k(18-C-6)]~2[M(NO~2)~4](H~2O)(M=Pd,Pt) 的合成与结构 总被引:1,自引:1,他引:0
研究了18-C-6分别与k~2[Pd(NO~2~4],k~2[Pt(NO~2)~4])的反应,并通过元素分析、红外光谱、单晶X射线衍射对生成的配合物[k(18-C-6)]~2[Pd(NO~2)~4](H~2O)~0.5(1)和[k(18-C-6)]~2,k~2[Pt(NO~2)~4])(H~2O)(2)进行了表征,两个配合匀匀为单斜晶系,空间P2~1/c.1的晶体学数据:α=1,7104(3),c=1,5763(3)nm,β=93.49(3)°,V=3.9987(14)nm^3,Z=4,D~c=1.507g/cm^3,F(000)=1880,R~1=0.0681,~wR~2=0.1004。2的晶体学数据:a=1.1312(3)nm,b=1.4227(2)nm,c=1.2266(3)nm,β93.141(10)°,V=1.9711(8)nm^3,Z=4,D~c=1.614g/cm^3,F(000)=936,R~1=0.0265,~wR~2=0.0721。在固态,配合物1具有[(18-c-6)]~2[Pd(NO~2)~4](H~2O)(1a)和[(18---c-6)]~2[Pd·(NO~2)~4](1b)两个分子,两者比例这1:1前者相邻的两个分子通过水分是的氧原子相连接形成一维链状结构,后者形面假一维链状结构,在配合物2中相邻的两个分子通过品分子中的氧原子相连接形成一维链状结构。 相似文献
17.
Sadegh Salehzadeh Reza Golbedaghi Ian. S. Tidmarsh Lorenzo Sorace Harry Adams Michael D. Ward 《Polyhedron》2009
Three new binuclear Ni(II) complexes [{Ni(L22py)Cl}2](ClO4)2 (1), [{Ni(L23py)Cl}2](ClO4)2 (2), and [{Ni(L33py)Cl}2](ClO4)2 (3), {L22py = N-(2-pyridylmethyl)-N-(2-aminoethyl)-1,2-diaminoethane, L23py = N-(2-pyridylmethyl)-N-(2-aminoethyl)-1,3-diaminopropane, L33py = N-(2-pyridylmethyl)-N-(3-aminopropyl)-1,3-diaminopropane} have been synthesized. Single crystal X-ray structure analysis showed that in each complex two distorted octahedral Ni(II) ions are bridged asymmetrically by a pair of chloride anions. Variable temperature magnetic susceptibility measurements of 1 and 3 revealed dominant ferromagnetic exchange interactions. 相似文献
18.
《Journal of Coordination Chemistry》2012,65(10):1720-1728
The reaction of H2L (N,N ′-bis(5-ethyl-1,3,4-thiadiazol-2-yl)-2,6-pyridinedicarboxamide) with Ni(II) salts gave crystals of two new complexes, [Ni3(µ3-O)(H2L)(L)2] · 2DMF (1) and [Ni2(µ-H2O)(CH3OH)(DMF)(L)2] · H2O · CH3OH (2). The complexes were characterized by elemental analysis, IR, thermal analysis, and X-ray single crystal diffraction. Complex 1 is a trinuclear complex containing a triangle frame in the center formed by three Ni(II) atoms with a bridging µ3-O. Complex 2 is dinuclear formed by two Ni(II) atoms with a bridging H2O. H2L coordinates to metal centers as a pentadentate ligand in 1 and tetradentate in 2. Thermal analysis shows that the thermal stability of 1 is higher than that of 2. In addition, the magnetic properties of 2 are also reported. 相似文献
19.
Three chiral complexes: [M((R, R)-et-pybox)Cl2] (M=Zn, 1, and Mn, 2) and [Ni((R, R)-et-pybox)(H2O)2Cl]Cl (3) ((R, R)-et-pybox is C2-symmetric 2,6-bis[4′-(R)-ethoxyoxazolin-2′-yl]pyridine) have been synthesized and characterized by elemental analysis, IR, UV, TG and single-crystal
X-ray diffraction. Single-crystal X-ray diffraction analyses show that 1 is isostructural to 2, the obtained complexes are of isolated mononuclear and the metal atoms of 1 and 2 have distorted trigonal bipyramidal coordination environment. A feature of interest is noted in the unit cell of 3, there exist two types of molecules, which similarly have a distorted octahedral geometry but only slightly differ in the
orientation of the coordinated atoms to the central Ni atom. These two types of molecules interact with each other by O–H···Cl
hydrogen bonds, giving rise to one-dimensional ribbon structure. 相似文献
20.
《Journal of Coordination Chemistry》2012,65(22):4013-4022
Two new dioxomolybdenum(VI) complexes, [MoO2L1(CH3OH)] (1) and [MoO2L2(H2O)] (2), where L1 and L2 are dianionic form of N′-(2-hydroxy-3-methoxybenzylidene)-4methoxybenzohydrazide and N′-(2-hydroxy-3methoxybenzylidene)-2-hydroxybenzohydrazide, respectively, have been synthesized and structurally characterized by spectroscopic methods and single-crystal X-ray determination. The complexes are mononuclear molybdenum(VI) compounds. Mo in each complex is octahedral. The difference in the substituent groups in the benzohydrazides leads to coordination of different solvent molecules. Crystals of the complexes are stabilized by hydrogen bonds. The complexes are effective catalysts for sulfoxidation. 相似文献