Two New Copper(Ⅱ) Complexes with p-Cyanobenzoic Acid: Synthesis,Crystal Structures and Properties

The complexes of [Cu(bpy)(H2O)(CBA)2]n 1 and [Cu(phen)(H2O)(CBA)2]·H2O 2 based on p-cyanobenzoic acid(HCBA) have been synthesized in aqueous ethanolic solution at room temperature. The single-crystal X-ray diffraction studies demonstrated that complex 1 crystallizes in orthorhombic and complex 2 is of triclinic system. The results indicate the complex 1 shows a 1D chain structure bridged by two carboxylic oxygen atoms from CBA–, and complex 2 is a mononuclear structure. Through intermolecular hydrogen bonding and π...π stacking interactions, the complexes are assembled into supramolecular structures. Complex 1 has been characterized by magnetic measurements. The magnetic measurement indicates that weak ferromagnetic interaction(zJ= 0.038(5)) between the Cu2+ ions is dominant in the structure. The IR spectrum and results of thermal and elemental analyses are also presented.     

Synthesis, Crystal Structure, Properties and Thermoanalysis of Complexes of Cu(II) and Ni(II) with Taurine-5-chlorosalicylaldelyde Schiff Base

Introduction The complexes of amino acid Schiff base have re-ceived considerable attention because of the interests in the biogical field.1-4 Taurine is a special amino acid in human beings. Recently, the complexes of taurine con-densation salicylaldelyde Schiff base have been re-ported,3-7 but the complexes of taurine condensation derived salicylaldelyde Schiff base have not been re-ported yet. In order to examine its anticancer and antibiosis ac-tivity of the complexes of taurine condensa…     

Crystal Structures and Magnetic Properties of Cu(II) Complexes with Pyrazole‐Substituted Iminonitroxyl Radicals: New Trinuclear Heterospin Complexes

The paper describes the crystal structures and magnetic properties of complexes of copper(II) hexafluoroacetate (Cu(hfac)₂) with stable pyrazolesubstituted iminonitroxyl radicals containing the pyrazole substitutuent in the second position of the 2imidazoline cycle (L). A new group of [Cu(hfac)₂]₃(L)₂ complexes is found, in which L performs a bidentatebridge function due to the coordination of the imine N atoms of the pyrazole and imidazoline cycles. It is shown that in the solid complexes there are Cu²⁺—N = C—N—O exchange routes with highenergy ferromagnetic interactions (60–100 cm^-1).     

Carboxylate-induced Various Structures of Ni(II) Complexes with Fluorescence Sensing and Bifunctional Electrochemical Properties

We synthesized three new Ni(II) coordination polymers [Ni(LXHLPXH2O)2]- H2O(CP1),[Ni(LXNIP)]-2H2O(CP2) and [Ni(LXNDCXH20)2](CP3)[L=N,N′-bis(pyridme-3-yl)thiophene-2,5-dicarboxamide, H2HIP=5-hydroxyisophthalic acid, H2NIP=5-nitroisophthalic acid, H2NDC=2,6-naphthalenedicarboxylie acid] by hydrothermal method, which were characterized by means of infrared spectra(IR), TG analyses, PXRD and single-crystal X-ray diffraction. The CPI is a ID tubular structure based on [Ni-HIP]2 loops and pairs of L ligands. CP2 is a 2D 3,5-connected architecture, which consists of Ni-L linear chains and (Ni-NIP)2 double chains. CP3 is a 2D network, which features 4-connected topology. Solid-state luminescent behaviours of CP-P3 were investigated. The CPI can detect Fe^3+ ions through luminescence quenching. The electrochemical properties of CPI buk-modified carbon paste electrode(CP1-CPE) has also been investigated, which has bifunctional electrocatalytic activity for oxidation of ascorbic acid and reduction of NO2^-.     

Crystal Structures and Magnetic Properties of Two New Schiff Base Complexes

Two new Schiff base complexes, [NiL]ClO4 1 and [CuL]ClO4.0.5H2O 2, were synthesized and characterized, where L is the 1:1 condensation product of salicylaldehyde and diethylenetriamine. Their crystal structures and magnetic properties were determined and investigated. The H-bonding interactions concern just in neighbor cation and anion, do not extendin to network for both 1 and 2. The temperature dependence of the magnetic susceptibilities(2-300K) showed that 1 is diamagnetism and 2 is paramagnetism with weak antiferromagnetic exchange interactions between adjacent spin carriers, no magnetic ordering taking place in these two complexes.     

Hydrothermal Synthesis,Crystal Structures,and Fluorescence Properties of Ni(II)–Ln(III) Complexes (Ln = Sm,Pr, Eu)

Three novel 3d–4f heterometal complexes [Ln(NiL)₃(Btca)(NO₃)] · xH₂O (Ln = Sm(III) (I), Pr(III) (II), Eu(III) (III) (H₂L = 2,3-dioxo-5,6,14,15-dibenzo-1,4,8,12-tetraazacyclo-pentadeca-7,13-dien, H₂Btca = benzotriazole-5-carboxylic acid) were solvothermally synthesized and characterized by singlecrystal X-ray diffraction (CIF files CCDC nos. 1555557 (I), 1555555 (II), 1555556 (III)). They crystallized in the monoclinic space group P2₁/n for I (x = 1.5) and C2/c for (II) and (III) (x = 1), respectively. In these complexes, the central Ln(III) and external nickel ions are bridged by macrocyclic oxamide groups. The metal center of Ln(III) resides in a distorted bicapped square antiprism surrounding with six oxygen atoms of three oxamide groups, two oxygen atoms of Btca^2– ion and two oxygen atoms of NO₃^-. Furthermore, there are C–H···O and/or C–H···N hydrogen bond interactions among nitrate, benzotriazole-5-carboxylate, macrocyclic oxamide and water to form three-dimensional superamolecular architecture. The fluorescence properties of the compounds I and II are also discussed.     

New Сu(II) and Co(II) Complexes with 2-Benzoylpyridine: Syntheses and Crystal Structures

Russian Journal of Coordination Chemistry - Two new mononuclear complexes [Cu(Bzpy)2(Cl)2] (I) and [Cо(Bzpy)2(H2O)2](BF4)2 (II) are synthesized by the reactions of 2-benzoylpyridine (Bzpy)...     

Hydrothermal Synthesis, Crystal Structures of Three New Metal (Ⅱ) Complexes with 1-Adamantaneacetic Acid

Three new complexes constructed by 1‐adamantaneacetic acid (HL), [Zn₂L₄]_n ( 1 ), [MnL₂(4,4′‐bipy)(H₂O)₂]_n· 2n(HL) ( 2 ) and MnL₂(2,2'‐bipy)(H₂O)₂ ( 3 ), have been hydrothermally synthesized. X‐ray single crystal diffraction analyses reveal that both 1 and 2 are infinite 1D chains along b axis. 2 and 3 have an octahedral coordination and show the supramolecular structures which are formed on the basis of the connectivity of intermolecular hydrogen bonds. The deprotonated L^? ligands coordinate the M(II) atoms with many coordination modes in the title complexes.     

Alternative Synthesis and Crystal Structures of Titanocene(III)-β-Diketonate Complexes

Abstract

Reaction of titanocene prepared from Cp₂TiCl₂ and 2n-BuLi with β-diketones (β-diketone = 1-phenyl-1,3-butanedione, 1,3-diphenyl-1,3-propanedione, 3-methyl-2,4-pentanedione or 3-ethyl-2,4-pentanedione) afforded the titanocene(III) β-diketonate complex. The compounds [Ti(η⁵-Cp)₂(1-phenyl-1,3-butanedionate)] and [Ti(η⁵?Cp)₂(1,3-diphenyl-1,3-propanedionate)] have been characterized by X-ray crystallography.     

Syntheses and Crystal Structures of Three Palladium(II) Complexes with Isonitrosobenzoylacetoneimine Ligand

ＩｎｔｒｏｄｕｃｔｉｏｎＩｓｏｎｉｔｒｏｓｏｋｅｔｏｎｅｓａｎｄｒｅｌａｔｅｄｌｉｇａｎｄｓｓｕｃｈａｓｎｉ ｔｒｏｓｏｐｈｅｎｏｌｅｓａｒｅｕｓｅｄａｓａｎａｌｙｔｉｃａｌｒｅａｇｅｎｔｓ .1Ｃｏｍｐｌｅｘｅｓｏｆｃｏｂａｌｔｍｅｔａｌｓ2 ,3ｗｉｔｈｉｓｏｎｉｔｒｏｓｏｋｅｔｏｎｅｉｍｉｎｅｓａｒｅｒｅｌｅｖａｎｔｔｏｔｈｅｃｈｅｍｉｓｔｒｙａｎｄｂｉｏｃｈｅｍｉｓｔｒｙｏｆｔｈｅｖｉｔａｍｉｎＢ12 ｃｏｅｎ ｚｙｍｅｓ .Ｉｓｏｎｉｔｒｏｓｏ(ｏｘｉｍｉｎｏ)ｇｒｏｕｐｏｆｔｈｏｓｅｌｉｇａｎｄｓｃ…     

Synthesis, Characterization and Crystal Structures of Lanthanide Phenoxyacetate Complexes with 1,10-Phenanthroline

IntroductionTherehasbeenconsiderableinterestinthecoordinationchemistryoflanthanidecomplexeswithcarboxylateligandsduetotheirpotentialapplicationinmolecularassembliesandluminescentprobesinsystemsofbiologicalrelevance .1 4 Ofthenumerouslanthanidecomplexesthathavebeenwidelystudied,5 9mostofthemarefoundtoexhibitavarietyofdimericorinfinitechainstructure.RecentlywehavereportedpolymericLu(POA) 3(phen)compoundinwhichlutetiumionsforminfinitechainalongtheb axisdirectionthroughthecoordinationofbridgingc…     

Syntheses,Crystal Structures,and Magnetic Properties of Cobalt(Ⅱ) Complexes with 1,1-Cyclohexanediacetic Acid

Two new Co(Ⅱ) coordination polymers,{[Co_3(Hchda)_2(chda)_2(bpp)_2(H_2O)_2]}_n 1 and {[Co(chda)(bpe)(H_2O)]·3H_2O}_n 2(H_2chda = 1,1-cyclohexanediacetic acid,bpp = 1,3-bis(4-pyridinyl)propane and bpe = 1,2-bis(4-pyridinyl)ethylene),were hydrothermally synthesized and then characterized by elemental analysis,IR spectroscopy,thermogravimetric analysis(TGA),and single-crystal X-ray diffraction.Complex 1 possesses an infinite metal-organic layer based on triply bridged linear trinuclear subunits and complex 2 exhibits a square(4,4) grid layer with dangling lateral arms resulting from eight-membered rings above and below the layer.In addition,magnetic properties of complexes 1 and 2 are also given.     

Insight into Crystal Structures,Hirshfeld Surfaces and Fluorescent Properties of Multinuclear Co(II) and Ni(II) Salamo-Based Complexes Involving Lone Pair π-Interactions

Russian Journal of General Chemistry - Two multi-nuclear Co(II) and Ni(II) complexes, [{Co3(L)2(EtOH)2(μ-OAc)2}2]·2CH3CH2OH· CH2Cl2·CHCl3·CH3CN (1) and...     

Synthesis, Structure and Magnetic Properties of Two New Homotrinuclear Bis(oxamato) Copper(II) Complexes

ＩｎｔｒｏｄｕｃｔｉｏｎＭｏｌｅｃｕｌａｒｍａｇｎｅｔｉｓｍｏｆｐｏｌｙｎｕｃｌｅａｒｃｏｍｐｌｅｘｅｓｉｓｏｆｃｏｎｓｉｄｅｒａｂｌｅｉｎｔｅｒｅｓｔｆｏｒｄｅｓｉｇｎｉｎｇｎｅｗｍａｇｎｅｔｉｃｍａｔｅｒｉａｌｓａｎｄｆｏｒｉｎｖｅｓｔｉｇａｔｉｎｇｔｈｅｒｅｌａｔｉｏｎｓｈｉｐｂｅｔｗｅｅｎｔｈｅｓｔｒｕｃｔｕｒｅａｎｄｔｈｅｒｏｌｅｏｆｔｈｅｐｏｌｙｍｅｔａｌｌｉｃａｃｔｉｖｅｓｉｔｅｓｉｎｂｉｏｌｏｇｉｃａｌｓｙｓｔｅｍｓ.1 4 Ｊｏｕｒｎａｕｘｅｔａｌ .5ｈａｖｅｒｅｃｅｎｔｌｙｐｒｏｐ…     

Syntheses,Crystal Structures and Luminescent Properties of Two New Zinc(Ⅱ) Complexes Based on Bifunctional Ligand

By using solvothermal method,two novel coordination polymers based on 4-(4-carboxyphen-yl)-1,2,4-triazole(Hcpt) and Zn(Ⅱ) cations,[Zn(cpt)(OH)]_n·n H_2O(FJU-32) and [Zn(cpt)(atrz)]n(FJU-33)(Hatrz = 3-amino-1,2,4-triazolate),were synthesized and characterized by single-crystal X-ray diffraction analyses,elemental analyses,FT-IR and powder X-ray diffraction. FJU-32 crystallizes in monoclinic,space group P21/c with a = 3.7441(3),b = 23.0384(19),c = 11.8562(10) ?,β = 99.069(8)o,V = 1009.91(15) ?3,Dc = 1.898 g/cm3,C_9H_9N_3O_4Zn,Mr = 288.57,F(000) = 916,μ(MoKα) = 2.439 mm~(-1),Z = 4,R = 0.0600 and wR = 0.1306 for 2412 observed reflections(I 2σ(I)),and R = 0.0704 and wR = 0.1349 for all data. FJU-33 crystallizes in monoclinic space group P21/c with a = 12.7483(5),b = 9.9922(3),c = 9.8403(3) ?,β = 100.756(4)°,V = 1231.47(7) ?~3,Dc = 1.816 g/cm~3,C_(11)H_9N_7O_2Zn,Mr = 336.62,F(000) = 680,μ(Cu Kα) = 2.957 mm~(-1),Z = 4,R = 0.0478 and w R = 0.1184 for 2466 observed reflections(I 2σ(I)),and R = 0.0687 and w R = 0.1309 for all data. In FJU-32,Zn(Ⅱ) is coordinated to three μ3-OH groups forming an unprecedented 1D zigzag-like double chain,and the 1D double chains are connected to four neighbouring double chains by the cpt ligands to form an extended 3D porous coordination polymer. In FJU-33,the adjacent [Zn(atrz)] 2D layers are further connected by the cpt ligands via Zn–O coordinated bonds and neighboring interlayer hydrogen-bonding interactions to give rise to an overall 3D pillared layer structure. The neutron triazole group of the cpt ligand has weaker coordination ability than the triazolate anion of atrz ligand. Furthermore,FJU-32 and FJU-33 display high thermal stability up to 300 ℃,and the solid state fluorescence reveals that two new complexes are potential optical materials.     

Synthesis,Characterization and Crystal Structures of Two New Compounds of Polyoxometalates and Diaminocyclohexanetetraacetate–Copper Complexes

The two new compounds (NH₄)₂[Cu₅(H₂O)₁₀(DCTA)₂] [β-Mo₈O₂₆]·4H₂O (1) and Cu₂[Cu₃K₂(H₂O)₁₀(DCTA)₂(HBW₁₂O₄₀)]·14H₂O (2) (DCTA = 1,2-diaminocyclohexanetetraacetate anion) were synthesized in aqueous solutions and characterized by elemental analyses, TGA, IR spectroscopy and single-crystal X-ray diffraction technique. Single-crystal structure analyses indicate they are constructed by the complexes with different nuclearity and polyoxometalates. In 1 DCTA chelates Cu2 ion and bridges Cu1 and Cu3 ions, forming a tetra-nuclear-ring cation chain extending along [110] direction. In 2 DCTA chelates Cu2/Cu1 and combines Cu3 and K ions, leading to a cyclic ten-heteronuclear complex cation; the K2 ions combine the complex cations and BW₁₂O₄₀ ^5? anions, forming a complex cation-BW₁₂ layer extending on ab-plane. The variable-temperature magnetic susceptibilities of newly prepared crystalline sample of 1 were measured and 1 exhibits a weak antiferromagnetic interaction.     

Crystal Structures and Characterizations of Bis(pyrrolidinedithiocarbamato) Cu(II) and Zn(II) Complexes

ＩｎｔｒｏｄｕｃｔｉｏｎＴｈｅａｂｉｌｉｔｙｏｆｄｉｔｈｉｏｃａｒｂａｍａｔｅ(ｄｔｃ)ｂｉｎｄｉｎｇｔｏｍｅｔａｌｓｈａｓｂｅｅｎｋｎｏｗｎｆｏｒｍａｎｙｙｅａｒｓ .Ｉｔｆｏｒｍｓｃｈｅｌａｔｅｓｗｉｔｈｖｉｒｔｕ ａｌｌｙａｌｌｔｒａｎｓｉｔｉｏｎｍｅｔａｌｓ.1Ｔｈｅｂｉｄｅｎｔａｔｅａｎｉｏｎｉｓａｌｓｏｗｅｌｌｋｎｏｗｎａｓａｂｒｉｄｇｅｂｅｔｗｅｅｎｔｗｏｔｒａｎｓｉｔｉｏｎｍｅｔａｌｃｅｎｔｅｒｓ.2 Ｗａ ｔｅｒ ｓｏｌｕｂｌｅｄｉａｌｋｙｌｄｉｔｈｉｏｃａｒｂａｍａｔｅｃｏｍｐｌｅｘｅｓ…     

Synthesis,Charactarization and Crystal Structures of Lanthanide Phenoxyacetate Complexes with1,10—Phenanthroline

Three new lanthanide phenoxyacetate complexes with 1,10‐phenanthroline. [Nd(POA)₃ (phen)]₂ · 2C₂H₅OH (1), [Eu(POA)₃‐ (phen)]₂ · 2C₂H₅OH (2) and [Sm(POA)₂(DMSO)(phen)]₂‐ (ClO₄)₂ (3) (POA= phenoxyacetate, phen = 1,10‐phenanthroline, DMSO = dimethyl sulfoxide), were synthesized and characterized by elemental analyses, IR, UV‐vis and FAB‐MS spectra. Their structures were determined by single crystal X‐ray diffraction analysis. In complexes 1 and 2, the carboxylate groups are bonded to Ln³⁺ ion in three modes: the chelating bidentate, the bridging bidentate and the bridging tridentate. In complex 3, the carboxylate groups are bonded to Sm³⁺ ion only involved in one mode: the bridging bidentate. The luminescence behavior of complex 2 was also studied by means of emission spectra.     

Complexes of Zn(II) and Сu(II) with the Amino Derivatives of Deoxycholic Acid: Syntheses,Structures, and Properties

Russian Journal of Coordination Chemistry - Complexes [Zn(L)Cl2] (I), Cu(L)Cl2 ? H2O (II), Zn(L1)Cl2 ? 0.5H2O (III), and Cu(L1)Cl2 ? 0.5H2O (IV) (where L and L1 are the...     

Synthesis of New Ruthenium(II) Bipyridyl Complexes and Studies on Their Photophysical and Photoelectrochemical Properties

IntroductionDye sensitizedsolarcells (DSSC)havebecomethefocusofmanyinvestigationssinceMichaelGr tzelandco workersmadethedyemoleculesadsorbedonaporousnet workoftheinterconnectednanometer sizedcrystallinesofawidebandgapsemiconductor.1 3Animpressivesolar to electricalenergyconversionefficiencyof 10 %hasbeenre portedanditmakespracticalapplicationfeasible .4 Thissystemconsistsofadye coatedsemiconductorelectrodeandacounterelectrodearrangedinasandwichconfigura tionandtheinter electrodespaceisfilled…