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1.
The 2‐D heteronuclear coordination polymer {[Ag4Fe2(SCN)12(H2O)2] (inaH)2(H2O)2}n (1) (inaH is the abbreviation of protonated isonicotinic acid) with chemical formula C24Ag4Fe2N14O8S12 has been synthesized and characterized by single crystal X‐ray diffraction, elemental analysis and IR spectroscopy. The Ag2S2 rings connect two kinds of octahedral geometries of Fe(III) ions, [Fe(NCS)6]3– and Fe(H2O)2(NCS)4]? units with bridging thiocyanate ions leading to 2‐D [Ag4Fe2(SCN)12(H2O)22– anion framework. Four kinds of rings including the unprecedented thirty‐two membered Ag4Fe4(SCN)8 rings share comers or edges in the 2‐D anion layer structure. All thiocyanates coordinate to the metal ions according to the HSAB principle with N atoms binding to the Fe(III) ions and with S atoms binding to Ag(I) ions. Pronoated ina cations stabilize the layer structure as counter ions and hydrogen bonds were formed within the pronoated in a cations dimer and between the dimers and the lattice waters. Crystal data: Mr= 1560.44, triclinic, P1, a=0.76082(1) nm, b=0.9234 nm, c= 1.85611(4) nm, a= 103.0170(10)°, β=93.7780(10)°, y=97.4080(10)°, V= 1.25385(3) nm3, Z=1, μ(Mo Kα)=2.650 mm?1, Dc,=2.067 g · cm?3, F(000)=758, R1=0.0412. wR2=0.1003.  相似文献   

2.
The coordination polymer [Zn(p-pdoa)4(bbp)]n 1 (p-pdoa = p-phenylenedioxydiacetate dianion and bbp = 2,6-bis(benzimidazol-2-yl)pyridine) has been synthesized by hydrothermal method and characterized by elemental analysis, IR and X-ray single-crystal diffraction. The title complex crystallizes in the triclinic system, space group P1^- with a = 7.8383(2), b = 12.6610(4), c = 13.1792(5)A, a = 84.433(2),β = 74.2980(1), γ = 87.4290(1)°, V = 1252.93(7)A^3, Z = 2, Dc = 1.593 g/cm^3,/z = 1.038 mm^-1, F(000) = 616, the final R = 0.0361 and wR = 0.1139. The Zn(Ⅱ) atom assumes a distorted trigonal bipyramidal geometry, involving two carboxyl O atoms from two different p-pdoa ligands and three N atoms from the bbp ligand. The Zn(Ⅱ) atom is alternately interlinked by p-pdoa ligands in a bismonodentate mode into a helical chain with a long pitch of 12.661 A and the adjacent Zn…Zn distance of 11.056 and 12.245 A. There exists a 2D supramolecular framework linked by π-π stacking (3.312 A) between adjacent benzimidazoles of bbp ligands and intermolecular hydrogen-bonding interactions between the uncoordinated carboxylate oxygen atoms (O(2), 0(5)) and the uncoordinated imidazolyl N atoms (N…O distances 2.706 and 2.786 A). There also exist two interlayer π-π stacking interactions of 3.299 A between adjacent central pyridines of bbp ligand and 3.176 A between the phenyl groups of p-pdoa ligand. Such π-π stacking interactions extend the two-dimensional layers into a 3D supramolecular network.  相似文献   

3.
The title compound, { [Ag2(bipy)2(H2O)2]·pydc·2H2O}n (bipy = 4,4'-bipyridine, pydc = pyridine-3,5-dicarboxylate), has been synthesized by the reaction of Ag2O with pydc and bipy in CH3OH solution. It crystallizes in the monoclinic system, space group C2/c with a = 21.419(8), b = 7.515(3), c = 18.070(7) A,β = 108.273(6)°, Mr = 765.27, V = 2761.9(17) A^3, Z = 4, Dc = 1.840 g/cm^3, F(000) = 1528,μ = 1.478 mm^-1, the final R = 0.0307 and wR = 0.0681. The structure determined demonstrated that the Ag(I) is three-coordinated by two nitrogen atoms from bipy and one water molecule, forming a one-dimensional coordination polymer [Ag2(bipy)2(H2O)2]n^2n+, which is further linked to generate a two-dimensional layer structure via Ag---Ag attractions.  相似文献   

4.
李秀梅  王庆伟  李丹  赵霞  高广刚 《结构化学》2007,26(11):1341-1344
A new one-dimensional copper coordination polymer chain has been prepared and fully characterized by single-crystal X-ray diffraction,elemental analyses and IR spectroscopy. The compound {[Cu2(C2O4)2(inta)4](inta)}n1 crystallizes in the triclinic system,space group P1,with a=8.4722(5),b=10.9825(6),c=11.6128(6),α=104.8050(10),β=102.5740(10),γ= 109.6890(10)o,V=927.18(9)3,Mr=929.79,Z=1,Dc=1.665 g/cm3,F(000)=475,μ=1.231 mm-1,R=0.0453 and wR=0.1185 for 3290 observed reflections (I > 2σ(I)). Of the compound,the Cu center is octahedrally coordinated with oxalate acting as a tetra-dentate ligand coordinated to the copper atom and each inta serving as a terminal ligand by employing only one N-donor to coordinate with the Cu center. An infinite {Cu2(C2O4)2}∞ chain is formed along the c axis. Furthermore,the 1D chains are held together via extensive hydrogen-bonding interactions to generate a three-dimensional network with 1D channels (ca. 5.491×11.507) where inta molecules are filled.  相似文献   

5.
A metal-organic coordination polymer formulated as [Ni(cbba) 2 (bipy)(H 2 O) 2 ] n 1 (H 2 cbba=2-(4-chlorine-benzoyl)benzoic acid,bipy=4,4-bipyridine) has been hydrothermally synthesized and structurally characterized by elemental analysis,IR spectrum,TG and single-crystal X-ray diffraction.The title compound crystallizes in the triclinic system,space group P1 with a=5.4550(4),b=11.4099(8),c=15.3135(11),α=68.7680(10),β=81.3470(10),γ=79.3450(10)o,V=869.48(11) 3,C 38 H 28 Cl 2 N 2 NiO 8,M r=770.23,D c=1.471 g/cm 3,μ(MoKα)=0.768 mm 1,F(000)=396,Z=1,the final R=0.0456 and wR=0.1171 for 2477 observed reflections (I > 2σ(Ⅰ)).It exhibits a one-dimensional chain-like structure.  相似文献   

6.
A novel coordination polymer of [Zn(4-CPOA)(Phen)(H2O)]n (C21H16N2O6Zn,1,4-CPOA = 4-carboxylato-phenoxyacetate dianion and Phen = 1,10-phenanthroline) has been synthesized and characterized by elemental analysis,IR,TG,PL and single-crystal X-ray diffraction. The crystal crystallizes in the triclinic system,space group of P1 with a = 9.622(3),b = 9.631(3),c = 11.526(4)A,α = 67.719(5),β = 71.203(5),γ = 83.552(6)o,V = 935.5(5) A^3,Z = 2,Dc = 1.625 g/cm^3,μ = 1.357 mm^-1 and F(000) = 468. The Zn(II) ion is surrounded by three carboxylate O atoms from two different 4-CPOA groups,two N atoms from the Phen ligand and one water molecule,forming a distorted octahedral coordination configuration. The Zn(II) ions were alternately interlinked by carboxylate groups of 4-CPOA with chelating bisbidentate and monodentate modes into a one-dimensional zigzag chain having an intrachain distance of ca. 9.631(1) . Under the direction of supramolecular recognition and attraction,the adjacent chains yield a double-stranded chain through π-π stacking between the phen ligands,which was further expanded into a 2-D framework via strong C–H–π interaction (ca. 2.95(1) ) between the 4-CPOA ligands and into a 3-D supramolecular network by strong hydrogen bond between terminal water molecule and carboxyl group. TG/DTG shows that its chain skeleton is thermally stable up to 419 oC and the blue fluorescent emission of the complex was determined at 471 nm in a solid state with its long decay lifetime of 1.83 ns.  相似文献   

7.
温德才  谢静  姜秀榕 《结构化学》2009,28(3):279-282
A new coordination polymer [Mn{5-(NO2)sal}2(phen)]n (5-(NO2)sal = 5-nitrosalicylate, phen = 1,10-phenanthroline) was synthesized by a hydrothermal reaction and characterized by elemental analysis, IR and X-ray single-crystal diffraction. The title complex crystallizes in orthorhombic, space group Pbcn with α = 25.747(8), b = 13.220(4), c = 7.009(3) A, V= 2386(1)A^3, Z = 4, R = 0.0427 and wR = 0.0890. The 5-nitrosalicylate anions doubly bridge the Mn(Ⅱ) atoms to form a one-dimensional polymeric chain with repeated eight-membered ring units (Mn-O-C-O)2. The crystal structure is stabilized by intra- and interchain hydrogen bonding interactions. The cyclic voltammetric behavior of the title complex is also reported.  相似文献   

8.
The hydrothermal reactions of sodium o‐hydroxybenzoate with AgNO3 yield a novel stable Ag(I) s?‐complex supramolecular polymer, [Ag2(o‐HOPhCO2)2]n. The structure of [Ag2(o‐HOPhCO2)2] was solved by single crystal X‐ray diffraction analysis. It is monoclinic with space group P2Jc and unit cell parameters a=0.7394(2) nm, b= 0.8822(2) nm, c=1.0662(2) nm, β= 107.66(3)°, Z=4. The silver(I) atom is two‐coordinated by two carboxylic oxygen atoms of two o‐hydroxybenzoate ligands, and meanwhile, forms supramolecular interaction with one carbon atom of phenyl‐ring in the third o‐hydroxybenzoate group. The a‐form Ag…C supramolecular bond bridges [Ag2(o‐HOPhCO2)2] units into an infinite 2D layered polymer [Ag2(o‐HOPhCO2)2]n. The coordination sphere of the silver atom is best described as a distorted T‐shaped geometry.  相似文献   

9.
A one-dimensional chain coordination polymer [Co(Ⅱ)(C6H5CH--CHCOOH)2(4,4'- bipy)(H20)5]n has been synthesized with cinnamylic acid, 4,4'-bipy and cobaltous chloride as raw materials. Crystal data for this complex: monoclinic, space group P21/c, a = 1.1481(3), b = 1.1230(2), c = 1.1759(3) nm, β = 97.054(4)^o, V= 1.5046(6) nm^3, Mr= 617.50, Dc = 1.363 g/cm^3, Z = 2, ,u(MoKa) = 0.627 mm^-1, F(000) = 646, S = 1.062, R 0.0443 and wR = 0.1178. The crystal structure shows that two neighboring cobalt(ID ions are linked together by one 4,4'-bipy, and the whole complex molecule adopts a one-dimensional chain structure. Each cobalt(H) ion is coordinated with two nitrogen atoms from two 4,4'-bipy molecules and four oxygen atoms from four water molecules, giving a distorted octahedral coordination geometry. The electrochemical properties were analyzed by combining with the crystal structure.  相似文献   

10.
The structure of the title complex [Fe2(μ-O)(bpb)2]n (bpb 2=1,2-bis(pyridine-2carboxamido) benzenate) has been characterized by single-crystal X-ray diffraction analysis.The complex (C36 H24 Fe2N8O5,Mr=760.33) crystallizes in the monoclinic space group P2 1/c with a=8.4615(17),b=33.704(7),c=11.173(2),β=91.12(3)o,V=3185.7(11)3,Z=4,D c=1.585 g/cm 3,μ(MoK)=0.970 mm-1,F(000)=1552,R int=0.0381,the final R=0.0454 and wR=0.1114.The magnetic susceptibilities of the complex have been examined in the temperature range of 2-300 K.The magnetic data were fitted to give the parameters of J d=-77.7(9) and J c=-11.5(6) cm-1.  相似文献   

11.
The bifunctional pyridine‐2,3‐dicarboxylic acid (H2pdc) ligand has one N atom and four O atoms, which could bind more than one AgI centre with diverse binding modes. A novel infinite one‐dimensional AgI coordination polymer, namely catena‐poly[[silver(I)‐(μ2‐pyridine‐2,3‐dicarboxylato‐κ2N :O 3)‐silver(I)‐tris(μ2‐5‐methyl‐1,3,4‐thiodiazol‐2‐amine‐κ2N :N ′)] monohydrate ethanol monosolvate], {[Ag2(C7H3NO4)(C3H5N3S)3]·H2O·C2H5OH}n , has been synthesized using H2pdc and 5‐methyl‐1,3,4‐thiadiazol‐2‐amine (tda), and characterized by single‐crystal X‐ray diffraction. One AgI atom is located in a four‐coordinated AgN4 tetrahedral geometry and the other AgI atom is in a tetrahedral AgN3O geometry. A dinuclear AgI cluster formed by three tda ligands with a paddelwheel configuration is bridged by the dianionic pdc2− ligand into a one‐dimensional coordination polymer. Interchain N—H…O hydrogen bonds extend the one‐dimensional chains into an undulating two‐dimensional sheet. The sheets are further packed into a three‐dimensional supramolecular framework by interchain N—H…O hydrogen bonds.  相似文献   

12.
A new cadmium–thiocyanate complex, namely catena‐poly[1‐carboxymethyl‐4‐(dimethylamino)pyridinium [cadmium(II)‐tri‐μ‐thiocyanato‐κ4N:S2S:N] [[[4‐(dimethylamino)pyridinium‐1‐acetate‐κ2O,O′]cadmium(II)]‐di‐μ‐thiocyanato‐κ2N:S2S:N]], {(C9H13N2O2)[Cd(NCS)3][Cd(NCS)2(C9H12N2O2)]}n, was synthesized by the reaction of 4‐(dimethylamino)pyridinium‐1‐acetate, cadmium nitrate tetrahydrate and potassium thiocyanide in aqueous solution. In the crystal structure, two types of CdII atoms are observed in distorted octahedral coordination environments. One type of CdII atom is coordinated by two O atoms from the carboxylate group of the 4‐(dimethylamino)pyridinium‐1‐acetate ligand and by two N atoms and two S atoms from four different thiocyanate ligands, while the second type of CdII atom is coordinated by three N atoms and three S atoms from six different thiocyanate ligands. Neighbouring CdII atoms are linked by thiocyanate bridges to form a one‐dimensional zigzag chain and a one‐dimensional coordination polymer. Hydrogen‐bond interactions are involved in the formation of the supramolecular network.  相似文献   

13.
The oxalate dianion is one of the most studied ligands and is capable of bridging two or more metal centres and creating inorganic polymers based on the assembly of metal polyhedra with a wide variety of one‐, two‐ or three‐dimensional extended structures. Yellow single crystals of a new mixed‐metal oxalate, namely catena‐poly[[diaquasodium(I)]‐μ‐oxalato‐κ4O1,O2:O1′,O2′‐[diaquairon(III)]‐μ‐oxalato‐κ4O1,O2:O1′,O2′], [NaFe(C2O4)2(H2O)4]n, have been synthesized and the crystal structure elucidated by X‐ray diffraction analysis. The compound crystallizes in the noncentrosymmetric space group I41 (Z = 4). The asymmetric unit contains one NaI and one FeIII atom lying on a fourfold symmetry axis, one μ2‐bridging oxalate ligand and two aqua ligands. Each metal atom is surrounded by two chelating oxalate ligands and two equivalent water molecules. The structure consists of infinite one‐dimensional chains of alternating FeO4(H2OW1)2 and NaO4(H2OW2)2 octahedra, bridged by oxalate ligands, parallel to the [100] and [010] directions, respectively. Because of the cis configuration and the μ2‐coordination mode of the oxalate ligands, the chains run in a zigzag manner. This arrangement facilitates the formation of hydrogen bonds between neighbouring chains involving the H2O and oxalate ligands, leading to a two‐dimensional framework. The structure of this new one‐dimensional coordination polymer is shown to be unique among the AIMIII(C2O4)2(H2O)n series. In addition, the absorption bands in the IR and UV–Visible regions and their assignments are in good agreement with the local symmetry of the oxalate ligand and the irregular environment of iron(III). The final product of the thermal decomposition of this precursor is the well‐known ternary oxide NaFeO2.  相似文献   

14.
Introduction Molecules containing different kinds of metal ions play an important role in molecular magnetism.1-3 So considerable attention has been paid to synthesizing heteronuclear complexes.1-4 As a potential bridging ligand, thiocyanate can coordinate to a harder metal center and softer ones with N and S atoms respectively. The complexes of thiocyanate and representative hard acidFe(III) ions usually have a six-coordinate octahe-dral structure such as [Fe(SCN)n]3-n and (Bu4N)4[Ag2-F…  相似文献   

15.
The coordination polymer catena‐poly[[(dimethylformamide‐κO)[μ3‐5‐(1,3‐dioxo‐4,5,6,7‐tetraphenylisoindolin‐2‐yl)isophthalato‐κ4O1,O1′:O3:O3′](methanol‐κO)manganese(III)] dimethylformamide monosolvate], {[Mn(C40H23NO6)(CH3OH)(C3H7NO)]·C3H7NO}n, has been synthesized from the reaction of 5‐(1,3‐dioxo‐4,5,6,7‐tetraphenylisoindolin‐2‐yl)isophthalic acid and manganese(II) acetate tetrahydrate in a glass tube at room temperature by solvent diffusion. The MnII centre is hexacoordinated by two O atoms from one chelating carboxylate group, by two O atoms from two monodentate carboxylate groups and by one O atom each from a methanol and a dimethylformamide (DMF) ligand. The single‐crystal structure crystallizes in the triclinic space group P. Moreover, the coordination polymer shows one‐dimensional 2‐connected {0} uninodal chain networks, and free DMF molecules are connected to the chains by O—H...O hydrogen bonds. The thermogravimetric and photoluminescent properties of the compound have also been investigated.  相似文献   

16.
A new cyanide‐bridged FeIII–MnII heterobimetallic coordination polymer (CP), namely catena‐poly[[[N,N′‐(1,2‐phenylene)bis(pyridine‐2‐carboxamidato)‐κ4N,N′,N′′,N′′′]iron(III)]‐μ‐cyanido‐κ2C:N‐[bis(4,4′‐bipyridine‐κN)bis(methanol‐κO)manganese(II)]‐μ‐cyanido‐κ2N:C], {[FeMn(C18H12N4O2)(CN)2(C10H8N2)2(CH3OH)2]ClO4}n, ( 1 ), was prepared by the self‐assembly of the trans‐dicyanidoiron(III)‐containing building block [Fe(bpb)(CN)2]? [bpb2? = N,N′‐(1,2‐phenylene)bis(pyridine‐2‐carboxamidate)], [Mn(ClO4)2]·6H2O and 4,4′‐bipyridine, and was structurally characterized by elemental analysis, IR spectroscopy, single‐crystal X‐ray crystallography and powder X‐ray diffraction (PXRD). Single‐crystal X‐ray diffraction analysis shows that CP 1 possesses a cationic linear chain structure consisting of alternating cyanide‐bridged Fe–Mn units, with free perchlorate as the charge‐balancing anion, which can be further extended into a two‐dimensional supramolecular sheet structure via inter‐chain π–π interactions between the 4,4′‐bipyridine ligands. Within the chain, each MnII ion is six‐coordinated by an N6 unit and is involved in a slightly distorted octahedral coordination geometry. Investigation of the magnetic properties of 1 reveals an antiferromagnetic coupling between the cyanide‐bridged FeIII and MnII ions. A best fit of the magnetic susceptibility based on the one‐dimensional alternating chain model leads to the magnetic coupling constants J1 = ?1.35 and J2 = ?1.05 cm?1, and the antiferromagnetic coupling was further confirmed by spin Hamiltonian‐based density functional theoretical (DFT) calculations.  相似文献   

17.
One of most interesting systems of coordination polymers constructed from the first‐row transition metals is the porous ZnII coordination polymer system, but the numbers of such polymers containing N‐donor linkers are still limited. The title double‐chain‐like ZnII coordination polymer, [Ag2Zn(CN)4(C10H10N2)2]n, presents a one‐dimensional linear coordination polymer structure in which ZnII ions are linked by bridging anionic dicyanidoargentate(I) units along the crystallographic b axis and each ZnII ion is additionally coordinated by a terminal dicyanidoargentate(I) unit and two terminal 1‐benzyl‐1H‐imidazole (BZI) ligands, giving a five‐coordinated ZnII ion. Interestingly, there are strong intermolecular AgI…AgI interactions between terminal and bridging dicyanidoargentate(I) units and C—H…π interactions between the phenyl rings of BZI ligands of adjacent one‐dimensional linear chains, providing a one‐dimensional linear double‐chain‐like structure. The supramolecular three‐dimensional framework is stabilized by C—H…π interactions between the phenyl rings of BZI ligands and by AgI…AgI interactions between adjacent double chains. The photoluminescence properties have been studied.  相似文献   

18.
Among the potential applications of coordination polymers, electrical conductivity ranks high in technological interest. We report the synthesis, crystal structure and spectroscopic analysis of an AgI–thiosaccharinate one‐dimensional coordination polymer {systematic name: catena‐poly[[[aquatetrakis(μ3‐1,1‐dioxo‐1,2‐benzisothiazole‐3‐thiolato‐κ3N:S3:S3)tetrasilver(I)]‐μ2‐4,4′‐(propane‐1,3‐diyl)dipyridine‐κ2N:N′] dimethyl sulfoxide hemisolvate]}, {[Ag4(C7H4NO2S2)4(C13H14N2)(H2O)]·0.5C2H6OS}n, with the 4,4′‐(propane‐1,3‐diyl)dipyridine ligand acting as a spacer. A relevant feature of the structure is the presence of an unusually short Ag…Ag distance of 2.8306 (9) Å, well within the range of argentophilic interactions, confirmed experimentally as such by a Raman study on the low‐frequency spectrum, and corroborated theoretically by an Atoms in Molecules (AIM) analysis of the calculated electron density. Electrical conductivity measurements show that this complex can act as a semiconductor with moderate conductivity.  相似文献   

19.
The design and synthesis of new organic lgands is important to the rapid development of coordination polymers (CPs). However, CPs based on asymmetric ligands are still rare, mainly because such ligands are usually expensive and more difficult to synthesize. The new asymmetric ligand 4‐[4‐(1H‐imidazol‐1‐yl)phenyl]pyridine (IPP) has been used to construct the title one‐dimensional coordination polymer, catena‐poly[[[aqua{4‐[4‐(1H‐imidazol‐1‐yl‐κN3)phenyl]pyridine}cadmium(II)]‐μ‐5‐hydroxybenzene‐1,3‐dicarboxylato‐κ3O1,O1′:O3] monohydrate], {[Cd(C8H4O5)(C14H11N3)2(H2O)]·H2O}n, under hydrothermal reaction of IPP with CdII in the presence of 5‐hydroxyisophthalic acid (5‐OH‐H2bdc). The CdII cation is coordinated by two N atoms from two distinct IPP ligands, three carboxylate O atoms from two different 5‐OH‐bdc2− dianionic ligands and one water O atom in a distorted octahedral geometry. The cationic [Cd(IPP)2]2+ nodes are linked by 5‐OH‐bdc2− ligands to generate a one‐dimensional chain. These chains are extended into a two‐dimensional layer structure via O—H…O and O—H…N hydrogen bonds and π–π interactions.  相似文献   

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