Synthesis and crystal structure of a mixed-ligand bismuth(III) complex, [Bi2(phen)2Br5(NO3)] n (phen = 1,10-phenanthroline)

Complex [Bi₂(phen)₂Br₅(NO₃)] _n has been synthesized by reaction of Bi(NO₃)₃ with potassium bromide and 1,10-phenanthroline. The complex has been isolated and characterized by IR-, ¹H NMR-, ¹³C NMR spectrum and elemental analysis. The structure of the [Bi₂(phen)₂Br₅(NO₃)] _n was confirmed by X-ray crystallography which shows the complex to be a one-dimensional polymer as a result of bridging bromides. The two Bi atoms have different environments, six and seven coordinate.     

Synthesis,thermal and spectroscopic properties,and crystal structures of [Co(bba)2(H2O)(phen)] and [Ni(bba)2(H2O)(butOH)(phen)] (bba = 2-benzoylbenzoate,phen = 1,10-phenanthroline,butOH = butanol)

Aquabis(2-benzoylbenzoato)(1,10-phenanthroline)cobalt(II) and aquabis(2-benzoylbenzoato)(butanol)(1,10-phenanthroline)nickel(II) have been prepared and characterized by elemental analyses, IR and electronic spectroscopy, magnetic measurements, and single-crystal X-ray diffraction. [Co(bba)₂(H₂O)(phen)] (1) and [Ni(bba)₂(H₂O)(butOH)(phen)] (2) consist of neutral monomeric units and crystallize in the monoclinic (P2(1)) and triclinic (P 1) crystal systems, respectively. The cobalt(II) and nickel(II) sit on inversion centres and exhibit distorted octahedral coordination. Phen is bidentate chelating. In 1, bba is both monodentate and bidentate, whereas in 2 bba is only monodentate. bba ligands are coordinated to metal(II) with carboxylates and IR spectra of both complexes display characteristic absorptions of carboxylate anions {ν(OCO)_asym and ν(OCO)_sym} of bba. Thermal analysis shows that mass losses of 1 from 105°C to 456°C correspond to decomposition of phen and bba, while for 2 these occur at 271–529°C.     

Synthesis,crystal structure and magnetic properties of a 1D coordination polymer[Ni(phth)(phen)(H2O)] n · n H2O

A new one-dimensional coordination polymer [Ni(phth)(phen)(H₂O)] _n ?·?nH₂O was synthesized. The structure was determined by X-ray crystallography revealing that each nickel atom is five-coordinate bridged via phthalate ion to form a zigzag chain. The chains are further linked together via hydrogen-bonding interactions to construct a three dimensional supramolecular network. The magnetic properties of the complex show that there are weak antiferromagnetic interactions between Ni(II) centers.     

Synthesis and characterization of one-dimensional coordination polymers, [M(sac)2(μ–pyz)(H2O)2] n [M=ZnII,CdII, pyz = pyrazine,and sac = saccharinate]

Two new coordination polymers, [M(sac)₂(μ–pyz)(H₂O)₂] _n [M=Zn^II(1), Cd^II(2), pyz =?pyrazine, and sac =?saccharinate], have been prepared and characterized by elemental analysis, FTIR spectroscopy, thermal analysis and single crystal X-ray diffraction. Both complexes are isomorphous and crystallize in the triclinic P 1 space group. The metal(II) ions are octahedrally coordinated by two sac, two aqua and two pyz ligands. The sac ligands are N-coordinated, while the pyz ligands are bridges between the metal centers, leading to one-dimensional linear chains. Intra-chain M–M separations in 1 and 2 are 7.218 and 7.498 Å, respectively. The individual chains are linked by strong OW–H ··· O(sac) hydrogen bonds into two–dimensional layers, which are further assembled into three–dimensional supramolecular networks by aromatic π(sac) ··· π(sac) stackings interactions.     

Lanthanum(III) complex of uracil-1-acetic acid,a new 2D coordination polymer [La(Phen)(UA)<Subscript>3</Subscript>]<Subscript>n</Subscript> · <Emphasis Type="Italic">n</Emphasis>H<Subscript>2</Subscript>O (Phen = 1,10-phenanthroline and UA = uracil-1-acetate)

A new lanthanum(III) complex of uracil-1-acetate (UA) and 1,10-phenanthroline (Phen), [La(Phen)(UA)₃]_n · nH₂O, was synthesized and characterized by elemental analysis, IR spectroscopy, XRD powder diffraction, thermal analysis, and X-ray crystallography. The single crystal X-ray analysis shows that the compound is in the monoclinic system, space group P2₁/c with a = 14.645(6), b = 17.114(7), c = 14.141(6) Å, β = 117.206(6)°, V = 3152(2) ų, Z = 4, final R ₁ = 0.0455 and wR ₂ = 0.0909. Each La³⁺ ion is coordinated by two N atoms from Phen, seven carboxylate oxygen atoms, and one carbonyl oxygen atom from UA, which results in ten-coordinate geometry, LaN₂O₈. The structural studies indicate that the title compound is two-dimensional coordination polymer, and self-assembly of the compound in the solid state is likely to occur due to N-H…O and O-H…O hydrogen bonds.     

Crystal structure of Ir(III) complexes with 1,10-phenanthroline: K[Ir(phen)Cl4]·H2O and (Me4N)[Ir(phen)Cl4]

The crystal structure of two salts of the complex [Ir(phen)Cl₄]^? anion with K⁺ (K[Ir(phen)Cl₄]·H₂O, 1) and Me₄N⁺ ((Me₄N)[Ir(phen)Cl₄], 2) cations is determined. The iridium(III) ion is in a distorted octahedral environment consisting of chloride anions and a bidentate heterocyclic ligand of 1,10-phenanthroline (phen). A crucial role in the formation of the crystal structure of complex 1 belongs to K…Cl contacts, while in the crystal structure of complex 2, the stacking interactions dominate.     

Two new metal coordination polymers containing mixed ligands: hydrothermal synthesis and crystal structures of [Co2(1,2,4,5-btc)(phen)2(H2O)6]·2H2O and [Mn3(1,2,4-btc)2(phen)2(H2O)2] n

Crystallisation of benzene-1,2,4,5-tetracarboxylic acid or benzene-1,2,4-tricarboxylic acid with divalent metal ions of Co, and Mn with 1,10-phenanthroline gives two new coordination solids, [Co₂(C₁₀H₂O₈)(C₁₂H₈N₂)₂(H₂O)₆]·2H₂O (1) and [Mn₃(C₉H₃O₆)₂(C₁₂H₈N₂)₂(H₂O)₂] _n (2). The three-dimensional supramolecular structure of compound 1 is constructed from discrete [Co₂(C₁₀H₂O₈)(C₁₂H₈N₂)₂(OH₂)₆] dimers and isolated water molecules via interesting hydrogen-bonding and π–π stacking interactions. Compound 2 has an unusual (4,?6) network, and the network is furthermore extended into a three-dimensional supramolecular architecture by the aid of hydrogen bonding and π–π stacking interactions.     

Crystal Structure of Complex Tris(4,4,4-trifluoro-1-phenyl-1,3-butanedione)(1,10-phenanthroline) Europium(III)

IntroductionCertainlanthanideionspossessharpemissionlinesinthevisibleregions.Thepossibilityoftransferringenergyeffi cientlytotheseionsbywayofstronglyabsorbingtransitionscharacteristicoforganicligandshasspurredmanyworkerstoinvestigatelanthanidechelatesaspotentiallasermaterials .Amongthemtheternarycomplexesofeuropium(III)andter bium(III)withtris(β diketonates)andanneutralligandhaveespeciallyattractedmuchattentionfortheirstronglumi nescence.Itmakethemaextensiveapplicationsindevelop mentofnewl…     

Two yttrium(III) coordination compounds containing a3-ptz or atza [a3-ptz = 5-[N-acetato(3-pyridyl)]tetrazole; atza = 5-aminotetrazole-1-acetato]

Two yttrium(III) coordination compounds, [Y(a3-ptz)₂(H₂O)₅]Cl?·?4H₂O (1) and [Y(atza)₂(H₂O)₂(CH₃OH)]Cl (2) [a3-ptz?=?5-[N-acetato(3-pyridyl)]tetrazole; atza?=?5-aminotetrazole-1-acetato], have been synthesized. Single-crystal X-ray diffraction analysis reveals that 1 has a distorted monocapped square-antiprism coordination geometry around Y^III. Complex 2 is a distorted pentagonal bipyramid with coordination from four atza ligands, two waters, and one methanol; the coordination of atza in 2 leads to its 1-D polymeric chain structure. 1 and 2 are self-assembled to form 3-D supramolecular structures through hydrogen bonds. The luminescence properties of 1 and Ka3-ptz were investigated at room temperature in the solid state.     

Hydrothermal Synthesis and Crystal Structure of a Novel Isophthalate-bridged Copper(II) Polymer with Two-dimensional Network Structure: [Cu_2(phen)(ipt)_2]_(2n)·nH_2O (ipt = isophthalate, phen = 1,10-phenanthroline)

1 INTRODUCTION donor due to the presence of the protonated carboxyl group; (d) it can form short bridges via one car- Coordination polymers are of great interest due to boxylato end or long bridges via the benzene ring[7]. their physical properties and potential applications in We believe that coordination functionality of isoph- functional materials[1~3]. Aromatic polycarboxylic acids thalate can lead to interesting structures. In this com- such as 1,2,4,5-benzenetetracarboxylic acid[4],…     

Physicochemical properties of ether-functionalized ionic liquids [CnOC2mim][Gly] (n = 1–5)

Journal of Thermal Analysis and Calorimetry - A novel ionic liquid 1-ethoxyethyl-3-methylimidazolium glycine ([C2OC2mim][Gly]) was prepared and characterized by 1H NMR spectroscopy, 13C NMR...     

Hydrothermal synthesis and characterizations of a novel modular europium(III) coordination polymer bridged by biphenyl-2,2′-dicarboxylate dianions and 1,10-phenanthroline

A novel europium(III) coordination polymer, [Eu₂(bpdc)₃(phen)₂(H₂O)₂] _n ·nH₂O (1) (bpdc?= biphenyl-2,2′-dicarboxylate; phen?=?1,10-phenanthroline), has been hydrothermally synthesized and structurally characterized by single-crystal X-ray diffraction methods. Complex 1 is monoclinic, space group C2/c, with a?=?24.3862(6), b?=?12.0792(3), c?=?22.9120(5)?Å, α?=?90.00, β?=?115.160(1), γ?=?90.00°, V?=?6108.8(3)?ų, Z?=?4, final R ₁?=?0.0605 and wR ₂?=?0.1760. Each Eu(III) ion is coordinated by six oxygen atoms from three carboxylate groups of three different bpdc anions, an oxygen atom from one coordinated water molecule and two nitrogen atoms from one phen ligand to complete a deformed monocapped square antiprism. Each pair of bpdc anions acts as a tetradentate ligand to connect two adjacent Eu(III) ions through chelating carboxylate groups, resulting in a centrosymmetric binuclear unit. Each binuclear unit links two adjacent binuclear units through two terminal bpdc anions to produce a one-directional zigzag chain. Two different kinds of hydrogen-bonding interactions link the chains and the lattice water molecules to form a hydrogen-bonding network.     

Unusually facile syntheses of [RuII(bpy)3]2+ (bpy = 2,2′-bipyridine) and [RuII(phen)3]2+ (phen = 1,10-phenanthroline)

The salts [Ru^II(L–L)₃](CF₃SO₃)₂ (L–L = bpy or phen) have been prepared in high yields via reactions of [Ru^II(DMF)₆](CF₃SO₃)₂ (DMF = N,N-dimethylformamide), generated in situ by reduction of [Ru^III(DMF)₆]-(CF₃SO₃)₃, with an excess of bpy or phen at room temperature in DMF solutions.     

Preparation,structure and magnetic study of a new linear 1-D Cu(II)–Gd(III) coordination polymer

A carboxylate-bridged Cu(II)–Gd(III) complex, [GdCu(CH₂CH(CH₃COO)₄(H₂O)₄] _n (NO₃) _n , was prepared and characterized. Single crystal X-ray analysis reveals the complex as a carboxylate-bridged 1-D Cu(II)–Gd(III) coordination polymer. The magnetic measurement showed this complex exhibiting weak ferromagnetic behavior.     

Synthesis,crystal structure,and luminescence of a new coordination polymer, {[Cd9(IDC)2(HIDC)6(Bipy)4] · 2N(CH3)(CH2CH3)2 · 2DMF} n

A new cadmium coordination polymer based on imidazole-4,5-dicarboxylic acid (H₃IDC) and 4,4′-bipyridine (Bipy), {[Cd₉(IDC)₂(HIDC)₆(Bipy)₄] · 2N(CH₃)(CH₂CH₃)₂ · 2DMF} _n , has been synthesized under solvothermal conditions and characterized by energy dispersive X-ray spectroscopy, elemental analysis, FT-IR spectroscopy, thermal analysis, and single crystal X-ray diffraction. It crystallizes in the orthorhombic system, space group Pnnm with a = 20.530(2) Å, b = 15.5957(14) Å, c = 16.3846(15) Å, α = β = γ = 90°, V = 5245.9(9) ų, and Z = 2. The complex exhibits a 3-D structure with channels along the c-axis, in which the free N,N-dimethylformamide and methyl-diethyl-amine molecules are located. The thermal behavior and luminescence of this complex have also been studied in the solid state.     

Cadmium(II) complex with (1′H-[2,2′]biimidazoly-1-YL)-acetic acid: Synthesis, crystal structure, and luminescence

A new cadmium(II) complex with (1′H-[2,2′]Biimidazoly-1-yl)-acetic acid (HBDAC) [Cd(BDAC)₂(H₂O)₂]·H₂O is synthesized and structurally characterized, which crystallizes in the monoclinic system, space group P2₁/c, a = 8.465(3) Å, b = 14.164(5) Å, c = 11.294(3) Å, α = 90°, β = 127.405(17)°, γ = 90°, Z = 2. The [Cd(BDAC)₂(H₂O)₂]·H₂O units are further bridged by O-H…O, N-H…O, C-H…O hydrogen bonds, π-π stacking and C-O…π interactions, generating a three-dimensional supramolecular structure. In addition, luminescence measurements reveal that complex 1 exhibits strong fluorescent emission in the solid state at room temperature.     

Hydrothermal Synthesis and Crystal Structure of a Novel Isophthalate-bridged Copper(Ⅱ) Polymer with Two-dimensional Network Structure: [Cu2(phen)(ipt)2]2n·nH2O (ipt = isophthalate, phen = 1,10-phenanthroline)

A novel metal-organic coordination polymer [Cu2(phen)(ipt)2]2n·nH2O 1 has been hydrothermally synthesized and structurally characterized by single-crystal X-ray diffraction. The complex crystallizes in monoclinic, space group P21/c with a = 12.338(3), b = 12.167(3), c = 18.167(4)(A), β = 111.686(14)o, V = 2534.1(10) A)3, C28H18Cu2N2O9, Mr = 653.52, Dc = 1.713 g/cm3, μ(MoKα) = 1.740 mm-1, F(000) = 1320, Z = 4, the final R = 0.0443 and wR = 0.0853 for 3543 observed reflections (I > 2σ(I)). It exhibits a novel two-dimensional network with tetra- Cu-ipt- as building units.     

Steric control of coordination: Unusual coordination mode of dimethylpyridine-2,6-dicarboxylate in a new dinuclear copper(II) complex [(dmpc)(Cl)(μ-Cl)Cu2(μ-Cl)(Cl)(dmpc)] and reversal of the coordination mode in [Cu(dmpc) (H2O)3] (ClO4)2

A series of dinuclear copper(II) complexes (1), (2), (3) and (4) containing dimethylpyridine-2,6-dicarboxylate were synthesised and structurally characterised to delineate the role of the steric demand in deciding the observed coordination mode. In contrast to the bulky isopropyl derivative with symmetrical O-sp² carbonylic coordination, the less sterically demanding methyl derivative adopts an unusual asymmetric coordination involving both O-sp² carbonylic and O-sp³ alkoxy atoms of the ester moiety. However, the symmetric O-sp² carbonylic coordination is reestablished upon dissolution in MeOH. In the absence of a sterically encumbered [Cu₂(-Cl)₂] core in (2), (3) and (4), the coordination reverts to the symmetrical carbonylic oxygen coordinating mode, underscoring the importance of overall space availability (steric demand) in and around the coordination sphere of the metal atom. Associated with these differential coordination modes, interesting structural dissimilarities are encountered in both the coordinating ligand and the coordination sphere of the copper centre. Besides X-ray crystallographic investigations on (1) and (2), culminating evidence is gathered through i.r., u.v.–vis. spectra and magnetic susceptibility measurements.