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1.
Phenylene‐bridged β‐Ketoiminate Dilanthanide Aryloxides: Synthesis,Structure, and Catalytic Activity for Addition of Amines to Carbodiimides
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Yubiao Hong Yu Zheng Mingqiang Xue Yingming Yao Yong Zhang Qi Shen 《无机化学与普通化学杂志》2015,641(7):1230-1237
The synthesis and reactivity of a series of bimetallic lanthanide aryloxides stabilized by a p‐phenylene‐bridged bis(β‐ketoiminate) ligand is presented. The reaction of 1,4‐diaminobenzene with acetylacetone in a 1:2.5 molar ratio in absolute ethanol gave the compound 1,4‐bis(4‐imino‐2‐pentanone)benzene ( 1 ) (LH2) in high yield. Compound 1 reacted with (ArO)3Ln(THF)2 (ArO = 2,6‐tBu2‐4‐MeC6H2O, THF = tetrahydrofuran) in a 1:2 molar ratio in THF, after workup, to give the corresponding dilanthanide aryloxides L[Ln(OAr)2(THF)]2 [Ln = Yb ( 2 ), Y ( 3 ), Sm ( 4 ), Nd ( 5 ), La ( 6 )] in high isolated yields. Compound 1 and complexes 2 – 6 were fully characterized, including X‐ray crystal structure analyses for complexes 2 , 3 , 5 , and 6 . Complexes 2 – 6 can be used as efficient pre‐catalysts for catalytic addition of amines to carbodiimides, and the ionic radii of the central metal atoms have a significant effect on the catalytic activity with the increasing sequence of La ( 6 ) < Nd ( 5 ) ≈ Sm ( 4 ) < Y ( 3 ) ≈ Yb ( 2 ). The catalytic addition reaction with 2 showed a good scope of substrates including primary and secondary amines. 相似文献
2.
Xia Li Wenjie Zhao Yue Zhang Yu Zhang Jinting Tan Yingli Lu Xing Feng Prof. Dr. Xuwu Yang 《无机化学与普通化学杂志》2012,638(5):785-790
Two novel coordination polymers based on mixed ligands, [Zn(dpb)(bdc)(H2O)]n ( 1 ) and [Cd(dpb)(bbdc)(H2O)(DMF)]n ( 2 ) [dpb = 1, 4‐bis(pyridin‐3‐ylmethoxy)benzene, H2bdc = 1, 4‐benzenedicarboxylate, H2bbdc = 4, 4′‐dibenzenedicarboxylate], were synthesized under hydrothermal conditions. Compound 1 forms meso‐helical chain and shows three fold interpenetrating architecture with 4‐connected net {6 6} diamond topology. Compound 2 is a left‐ and right‐handed helical layer, which are interacted by π–π stacking interactions to construct a 3D framework. The luminescent properties of the compounds are discussed. 相似文献
3.
Sibrina N. Collins Stephen Taylor Jeanette A. Krause William B. Connick 《Acta Crystallographica. Section C, Structural Chemistry》2007,63(10):m436-m439
1‐[6‐(1H‐Pyrrolo[2,3‐b]pyridin‐1‐yl)pyridin‐2‐yl]‐1H‐pyrrolo[2,3‐b]pyridin‐7‐ium tetrachloridoferrate(III), (C19H14N5)[FeCl4], (II), and [2,6‐bis(1H‐pyrrolo[2,3‐b]pyridin‐1‐yl‐κN7)pyridine‐κN]bis(nitrato‐κO)copper(II), [Cu(NO3)2(C19H13N5)], (III), were prepared by self‐assembly from FeCl3·6H2O or Cu(NO3)2·3H2O and 2,6‐bis(1H‐pyrrolo[2,3‐b]pyridin‐1‐yl)pyridine [commonly called 2,6‐bis(azaindole)pyridine, bap], C19H13N5, (I). Compound (I) crystallizes with Z′ = 2 in the P space group, with both independent molecules adopting a trans–trans conformation. Compound (II) is a salt complex with weak C—H...Cl interactions giving rise to a zigzag network with π‐stacking down the a axis. Complex (III) lies across a twofold rotation axis in the C2/c space group. The CuII center in (III) has an N3O2 trigonal–bipyramidal environment. The nitrate ligand coordinates in a monodentate fashion, while the bap ligand adopts a twisted tridentate binding mode. C—H...O interactions give rise to a ribbon motif. 相似文献
4.
《Acta Crystallographica. Section C, Structural Chemistry》2018,74(3):332-341
Multifunctional 2‐amino‐5‐sulfobenzoic acid (H2afsb) can exhibit a variety of roles during the construction of supramolecular coordination polymers. The pendant carboxylic acid, sulfonic acid and amino groups could not only play a role in directing bonding but could also have the potential to act as hydrogen‐bond donors and acceptors, resulting in extended high‐dimensional supramolecular networks. Two new CuII coordination compounds, namely catena‐poly[[[diaquacopper(II)]‐μ‐1,6‐bis(1H‐1,2,4‐triazol‐1‐yl)hexane‐κ2N4:N4′] bis(3‐amino‐4‐carboxybenzenesulfonate) dihydrate], {[Cu(C10H16N6)2(H2O)2](C7H6NO5S)2·2H2O}n or {[Cu(bth)2(H2O)2](Hafsb)2·2H2O}n, (1), and bis(μ‐2‐amino‐5‐sulfonatobenzoato‐κ2O1:O1′)bis{μ‐1,2‐bis[(1H‐imidazol‐1‐yl)methyl]benzene‐κ2N3:N3′}bis[aquacopper(II)] trihydrate, [Cu2(C7H5NO5S)2(C14H14N4)2(H2O)2]·3H2O or [Cu2(afsb)2(obix)2(H2O)2]·3H2O, (2), have been obtained through the assembly between H2afsb and the CuII ion in the presence of the flexible N‐donor ligands 1,6‐bis(1H‐1,2,4‐triazol‐1‐yl)hexane (bth) and 1,2‐bis[(1H‐1,2,4‐triazol‐1‐yl)methyl]benzene (obix), respectively. Compound (1) consists of a cationic coordination polymeric chain and 3‐amino‐4‐carboxybenzenesulfonate (Hafsb−) anions. Compound (2) exhibits an asymmetric dinuclear structure. There are hydrogen‐bonded networks within the lattices of (1) and (2). Interestingly, both (1) and (2) exhibit reversible dehydration–rehydration behaviour. 相似文献
5.
Two cobalt(II) coordination polymers, namely {[Co(HO‐BDC)(bbe)] · (H2O)}n ( 1 ), and {[Co(O‐BDC)(bbp)] · (H2O)}n ( 2 ) (HO‐H2BDC = 5‐hydroxyisophthalic acid, bbe = 1, 2‐bis(benzoimidazol‐2‐yl)ethane, and bbp = 1, 3‐bis(benzoimidazol‐2‐yl)propane) were synthesized under hydrothermal conditions, and characterized by elemental analyses, IR spectroscopy, single‐crystal X‐ray diffraction, and thermogravimetric analyses. Compound 1 is a 1D chain, whereas 2 is a (3, 3)‐connected 2D network with (63) topology. These two 1D and 2D complexes are further connected by hydrogen bonds to form the 3D supramolecular architectures. The electrochemical lithium‐ion storage properties of the as‐made Co3O4 by calcination of 1 are investigated in detail. 相似文献
6.
《Journal of Coordination Chemistry》2012,65(16):2899-2911
Six coordination compounds constructed by two structurally related flexible nitrogen-containing polycarboxylate ligands 2,2′-(2,2′-(ethane-1,2-diylbis(oxy))bis(2,1-phenylene))bis(methylene)bis(azanediyl)dibenzoic acid (H2L1) and 5,5′-(2,2′-(ethane-1,2-diylbis(oxy))bis(2,1-phenylene))bis(methylene)bis(azanediyl)diisophthalic acid (H4L2) have been synthesized: [Ni(H2O)6]?·?L1?·?(C2H5OH)0.5?·?H2O (1), [Co(L1)(L3)]?·?CH3OH (2), [Ni(L1)(L3)]?·?CH3OH (3), [Zn(L1)(L3)]?·?CH3OH (4), [Cd(L1)(L3)]?·?CH3OH (5), and [Zn(L2)0.5(phen)]?·?C2H5OH (6), where L3?=?3,4?:?9,10?:?17,18?:?23,24-tetrabenzo-1,12,15,26-tetraaza-5,8,19,22-tetraoxacyclooctacosan and phen?=?1,10-phenanthroline. The crystal structures have been determined by single-crystal X-ray diffraction. Compound 1 displays a discrete structure, which is further linked by hydrogen bonds to form a 2-D supramolecular layer. Compounds 2–5 display similar structures. These compounds possess 1-D meso-chain structures linked by L1 and metals. The C–H?···?π interactions from neighboring chains extend the chains in different directions, giving a 3-D plywood network. Compound 6 possesses 2-D layers, which are further linked by hydrogen-bonding interactions to generate a 3-D supramolecular architecture. 相似文献
7.
Xinfa Li 《无机化学与普通化学杂志》2014,640(11):2279-2282
The three‐dimensional (3D) samarium phosphonate framework [Sm2(H2L)3]n · 5n(H2O) ( 1 ) [H4L = N,N′‐piperazine‐bis(methylenephosphonic acid)] was synthesized by hydrothermal reaction of Sm2O3 with N,N′‐piperazine‐bis(methylenephosphonic acid) hydrochloride in the presence of glutaric acid. Single‐crystal X‐ray diffraction analysis reveals that it has a 3D open framework structure with helical channels along the crystallographic c axis. The channels are filled up by discrete pentameric water clusters, which are hydrogen‐bonded to the host. Compound 1 displays two interesting structural features: (a) two of three H2L2– ligands adopt the less stable a,e‐cis conformation; (b) both of the SmIII ions exhibit rather unusual octahedral coordination arrangements. In addition, the photoluminescent property was investigated. 相似文献
8.
By using a new 4,6‐bis(imidazol‐1‐yl) isophthalic acid ligand (H2bimip) with imidazolyl and carboxyl bifunctional groups, three new MOFs, [Co(bimip)(H2O)0.5] ? 0.5 H2O ( 1 ), [Zn(bimip)] ( 2 ), and [Mn(bimip)(H2O)2] ? H2O ( 3 ), have been solvothermally synthesized in different solvent systems. H2bimip displays three different coordinated modes through the imidazolyl and carboxyl groups, and different cis–cis and trans–cis configurations, which result in distinct 3D topological frameworks: a (4,8)‐connected scu net for 1 ; a twofold interpenetrated (4,4)‐connected pts net for 2 ; and a four‐connected sra net for 3 . Compounds 1 and 3 show antiferromagnetic properties, and 2 emits strong solid‐state blue luminescence. Compound 1 shows good chemical stability in acidic and basic environments and in boiling water. Additionally, the polar channels in 1 , which are decorated by uncoordinated carboxylate O atoms and imidazolyl fragments, allow it to adsorb CO2 molecules selectively over CH4, and the CO2 binding sites in the framework were distinguished by molecular simulations. 相似文献
9.
Ji‐Jiang Wang Tian‐Tian Wang Long Tang Xiang‐Yang Hou Mei‐Li Zhang Lou‐Jun Gao Feng Fu Yi‐Xia Ren 《无机化学与普通化学杂志》2014,640(2):483-486
Two coordination polymers, {[Zn2(L)(bpy)] · 2H2O}n ( 1 ) and [Zn2(L)(bpe)]n ( 2 ) [H4L = terphenyl‐2,2′,4,4′‐tetracarboxylic acid, bpy = 4,4′‐bipyridine, and bpe = 1,2‐bis(4‐pyridyl)ethane], were hydrothermally synthesized under similar conditions and characterized by elemental analysis, IR spectroscopy, TGA, and single‐crystal X‐ray diffraction analysis. Compound 1 has a 3D framework containing Zn–O–C–O–Zn 1D chains. Compound 2 exhibits a 3D framework, which features tubular channels. The channels are occupied by bpe molecules. The differences in the structures demonstrate that the auxiliary dipyridyl‐containing ligand has a significant effect on the construction of the final framework. Additionally, the fluorescent properties of the two compounds were also studied in the solid state at room temperature. 相似文献
10.
Liang Qiao Xiao-Gang Chen Ji-Xing Gao Yong Ai 《Acta Crystallographica. Section C, Structural Chemistry》2019,75(6):728-733
The crystal structures of three quinuclidine‐based compounds, namely (1‐azabicyclo[2.2.2]octan‐3‐ylidene)hydrazine monohydrate, C7H13N3·H2O ( 1 ), 1,2‐bis(1‐azabicyclo[2.2.2]octan‐3‐ylidene)hydrazine, C14H22N4 ( 2 ), and 1,2‐bis(1‐azoniabicyclo[2.2.2]octan‐3‐ylidene)hydrazine dichloride, C14H24N42+·2Cl? ( 3 ), are reported. In the crystal structure of 1 , the quinuclidine‐substituted hydrazine and water molecules are linked through N—H…O and O—H…N hydrogen bonds, forming a two‐dimensional array. The compound crystallizes in the centrosymmetric space group P21/c. Compound 2 was refined in the space group Pccn and exhibits no hydrogen bonding. However, its hydrochloride form 3 crystallizes in the noncentrosymmetric space group Pc. It shows a three‐dimensional network structure via intermolecular hydrogen bonding (N—H…C and N/C—H…Cl). Compound 3 , with its acentric structure, shows strong second harmonic activity. 相似文献
11.
《Journal of Coordination Chemistry》2012,65(16):2945-2952
Two new coordination compounds, {[Cd2(btrm)(ip)2(H2O)2]?·?2H2O} n (1) and {[Cd2(btrm)(hip)2(H2O)4]?·?3H2O} n (2) (btrm?=?bis(1,2,4-triazol-1-yl)methane, H2ip?=?isophthalic acid, H2hip?=?5-hydroxy isophthalic acid), have been synthesized and structurally characterized. Compound 1 is a 3-D network with CdSO4 topology. Compound 2 contains 1-D ladder structures, which are interconnected by classical hydrogen-bonding interactions (O–H?···?O) to lead to 3-D supramolecular architectures. Luminescence was performed on 1 and 2, both of which showed strong fluorescent emissions in the solid state at room temperature. 相似文献
12.
Abstract. Two new coordination polymers {[Cd2(BDC)2(3‐bpmp)(H2O)2] · 2H2O}n ( 1 ) and [Cd2(BDC)2(4‐bpmp)]n ( 2 ) [H2BDC = 5‐hydroxy‐isophthalic acid, 3‐bpmp = 1,4‐bis(3‐pyridylmethy)piperazine, and 4‐bpmp = 1,4‐bis(4‐pyridylmethy) piperazine] were synthesized via hydrothermal synthesis, and further characterized by IR spectroscopy, elemental analysis, XRD, and X‐ray crystallography. Complex 1 shows a two‐dimensional (4,4) sql topology and complex 2 features an 8‐connected hex topology. Moreover, the luminescent properties of complexes 1 and 2 were investigated in the solid state at room temperature. 相似文献
13.
Hydrothermal Synthesis,Crystal Structures,and Catalytic Properties of Three Coordination Polymers Containing Flexible Bis(benzimidazole) and Dicarboxylate Ligands
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Three metal‐organic coordination polymers, namely {[Cd(L1)(1,2‐chdc)] · 2H2O}n ( 1 ), {[Ni(L2)(1,2‐chdc)] · H2O}n ( 2 ), and [Cd(L2)(npht)]n ( 3 ) [L1 = 1,2‐bis(2‐methylbenzimidazol‐1‐ylmethyl)benzene, L2 = 1,2‐bis(5,6‐dimethylbenzimidazol‐1‐ylmethyl)benzene, 1,2‐H2chdc = 1,2‐cyclohexanedicarboxylic acid, H2npht = 3‐nitrophthalic acid] were synthesized under hydrothermal conditions and structurally characterized by single‐crystal X‐ray diffraction methods, IR spectroscopy, TGA, and elemental analysis. In compound 1 , two 1,2‐chdc2– ligands connect two neighboring Cd atoms to form a dinuclear [Cd2(1,2‐chdc)2] subunit, which is further linked by L1 ligands to construct a 1D ladder‐like chain. Compound 2 exhibits a 2D (4,4) coordination network with {44.62} topology, whilst compound 3 shows a 1D helical chain structure. The fluorescence, UV/Vis diffuse reflection spectra, and catalytic properties of complexes 1 – 3 for the degradation of the congo red azo dye in a Fenton‐like process are investigated. 相似文献
14.
Three Silver(I) Coordination Polymers Constructed from Flexible Bis(benzimidazole) and Carboxylates Ligands
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Xiao Xiao Wang Yong Guang Liu Kristof Van Hecke Andrey Goltsev Guang Hua Cui 《无机化学与普通化学杂志》2015,641(5):903-910
Under hydrothermal conditions, three new AgI coordination polymers, [Ag(L1)(Hmip)]n ( 1 ), [Ag(L2)0.5(ndc)0.5]n ( 2 ), and {[Ag(L3)0.5(Htbi)] · 0.25H2O}n ( 3 ) [H2mip = 5‐methylisophthalic acid, L1 = 1,4‐bis(2‐methylbenzimidazol‐1‐ylmethyl)benzene, H2ndc = 2,6‐naphthalenedicarboxylic acid, L2 = 1,3‐bis(2‐methylbenzimidazol‐1‐ylmethyl)benzene, H2tbi = 5‐tert‐butyl isophthalic acid, L3 = 1,4‐bis(5,6‐dimethylbenzimidazole)butane] were synthesized by employing flexible bis(benzimidazole) and dicarboxylic acid ligands. Polymer 1 displays a 2D 4‐connected 4L2 underlying net topology with the point symbol of (65.8) in standard representation. Compound 2 possesses a 2D uninodal 4‐connected Shubnikov tetragonal plane net (sql) based on a dinuclear AgI clusters with the point symbol (44.62), which is further extended into a 3D supramolecular framework by π–π interactions. Compound 3 possesses dinuclear molecular complex groups, which form chains by weak Ag–O (2.6 Å) coordination bonds, and further assembled into a 2D supramolecular layer by hydrogen bonds and π–π stacking interactions. These complexes exhibit intense fluorescent emissions in solid state. UV/Vis diffuse reflection spectra and the excellent catalytic activity for the degradation of the congo red azo dye in a Fenton‐like process are discussed. 相似文献
15.
《Angewandte Chemie (International ed. in English)》2017,56(47):15141-15145
The bulky bis(4,6‐t Bu‐benzoxazol‐2‐yl)methane ligand system enabled the synthesis of the water‐containing organometallic potassium complex [(18‐crown‐6)K{(4,6‐t Bu‐OCNC6H2)2CH}⋅H2O] ( 2 ), which is an unprecedented example of a water‐stable reactive organopotassium compound. Furthermore, 2 is a rare example of a bis(benzoxazol‐2‐yl)methanide ligand displaying solely O‐coordination to a metal ion. Compound 2 was fully characterized through its solid‐state structure. Furthermore, its behavior in solution was investigated by NMR titration DOSY experiments. These revealed full protonation of the complex only after seven days and the addition of 114 equivalents of water. 相似文献
16.
《Journal of Coordination Chemistry》2012,65(24):4188-4200
Four complexes, [Ag4(bipy)2(Himdc)2(H2O)2] n (1), [Ag(H2imdc)] n (2), [K(H3imdc)(H2imdc)(H2O)2] n (3), and [Cu(Himc)2] (4) (H3imdc?=?1H-imidazole-4,5-dicarboxylic acid, H2imc?=?1H-imidazole-2-carboxylic acid, and bipy?=?4,4′-bipyridine), were hydrothermally synthesized and characterized by single-crystal X-ray diffraction analysis and elemental analysis. The obtained complexes exhibit different coordination structures; 1 contains a 2-D supramolecular layer based on two chains arraying uniformly in an ABAB manner. Compound 2 displays sawtooth-shaped 1-D chains extending to 2-D layers via hydrogen bond interactions. Compound 3 possesses a 3-D framework structure based on a 1-D chain via hydrogen bonding interactions. Compound 4 has a 3-D framework structure bearing a pcu-type topology. In addition, the photoluminescence for 1 has been investigated. 相似文献
17.
《Acta Crystallographica. Section C, Structural Chemistry》2017,73(10):820-827
The crystal structures of rare‐earth diaryl‐ or dialkylphosphate derivatives are poorly explored. Crystals of bis[bis(2,6‐diisopropylphenyl)phosphato‐κO ]chloridotetrakis(methanol‐κO )neodymium methanol disolvate, [Nd(C24H34O4P)Cl(CH4O)4]·2CH3OH, (1), and of the lutetium, [Lu(C24H34O4P)Cl(CH4O)4]·2CH3OH, (2), and yttrium, [Y(C24H34O4P)Cl(CH4O)4]·2CH3OH, (3), analogues have been obtained by reactions between lithium bis(2,6‐diisopropylphenyl)phosphate and LnCl3(H2O)6 (in a 2:1 ratio) in methanol. Compounds (1)–(3) crystallize in the C 2/c space group. Their crystal structures are isomorphous. The molecule possesses C 2 symmetry with a twofold crystallographic axis passing through the Ln and Cl atoms. The bis(2,6‐diisopropylphenyl)phosphate ligands all display a κ1O‐monodentate coordination mode. The coordination polyhedron for the metal atom [coordination number (CN) = 7] is a distorted pentagonal bipyramid. Each [Ln{O2P(O‐2,6‐iPr2C6H3)2}2Cl(CH3OH)4] molecular unit exhibits two intramolecular O—H…O hydrogen bonds, forming six‐membered rings, and two intramolecular O—H…Cl interactions, forming four‐membered rings. Intermolecular O—H…O hydrogen bonds connect each unit via four noncoordinating methanol molecules with four other units, forming a two‐dimensional hydrogen‐bond network. Crystals of bis[bis(2,6‐diisopropylphenyl)phosphato‐κO ]tetrakis(methanol‐κO )(nitrato‐κ2O ,O ′)neodymium methanol disolvate, [Nd(C24H34O4P)(NO3)(CH4O)4]·2CH3OH, (4), have been obtained in an analogous manner from NdCl3(H2O)6. Compound (4) also crystalizes in the C 2/c space group. Its crystal structure is similar to those of (1)–(3). The κ2O ,O ′‐bidentate nitrate anion is disordered over a twofold axis, being located nearly on it. Half of the molecule is crystallographically unique (CNNd = 8). Unlike (1)–(3), complex (4) exhibits disorder of all three methanol molecules, one isopropyl group of the phosphate ligand and the NO3− ligand. The structure of (4) displays intra‐ and intermolecular O—H…O hydrogen bonds similar to those in (1)–(3). Compounds (1)–(4) represent the first reported mononuclear bis[bis(diaryl/dialkyl)phosphate] rare‐earth complexes. 相似文献
18.
Contributions to the Chemistry of Phosphorus. 237. On the Reaction of Diphosphane(4) with Peroxo Compounds: Formation of Phosphinophosphinic Acid, H2PPH(O)OH, and Bis(phosphino)phosphinic Acid, (H2P)2P(O)OH Diphosphane(4) reacts with peroxo compounds such as hydrogen peroxide, tetraline hydroperoxide, trifluoroperoxyacetic acid, and cumene hydroperoxide (which is particularly suited for preparative work) at ?30°C to furnish phosphino-phosphinic acid, H2PPH(O)OH ( 1 ), as the primary product. Compound 1 disproportionates to a major extent in statu nascendi to give phosphanes (above all PH3) and monophosphorus acids of various oxidation states as well as some bis(phosphino)phosphinic acid, (H2P)2P(O)OH ( 2 ). The acids 1 and 2 can be trapped and stabilized as their triethylammonium salts. The structures of these salts have been determined by spectroscopic investigations. 相似文献
19.
Prof. Dr. Ya‐Guang Sun Gang Xiong Mei‐Yan Guo Fu Ding Lei Wang En‐Jun Gao Ming‐Chang Zhu Francis Verpoort 《无机化学与普通化学杂志》2011,637(2):293-300
Four compounds [Dy(H2bidc)(Hbidc)(H2O)8] · 8H2O ( 1 ), {[Dy(Hbidc)(H2O)2(Htzac)] · 3H2O}n ( 2 ), [Dy(C2O4)0.5(Hbidc)(H2O)3]n ( 3 ), {[Dy2(Hbidc)2(H2O)(SO4)] · H2O}n ( 4 ) (H3bidc = 1H‐benzimidazole‐5,6‐dicarboxylic acid, H2tzac = 1H‐3‐amino‐5‐carboxy‐1,2,4‐triazole) were synthesized with hydrothermal synthesis and structurally characterized by elemental analysis, IR spectroscopy, and single‐crystal X‐ray diffraction. X‐ray analysis revealed that the four coordination compounds have different structures: Compound 1 is a three dimensional supermolecular structure joined by hydrogen bonding interactions based upon dinuclear units. Compound 2 is a three dimensional supermolecular structure combined by hydrogen‐bonding interactions based upon one dimensional coordination chain including a T4(1)‐type water cluster chain. The structure of compound 3 is built of two dimensional (3,6)‐connected kgd‐type (43)2(46.66.83) layers with a right‐handed and a left‐handed helical chain, which are further extended into three dimensional supramolecular architecture by hydrogen bonding interactions. Compound 4 displays a three dimensional framework containing a dinuclear dysprosium building unit with a (3,8)‐connected (4.52)2(42.510.612.7.83) topological framework. In addition, the photoluminescent property of compound 3 was investigated. 相似文献
20.
The metal‐organic framework {[Zn2(CAM)(μ2‐OH)(bpp)] · 2H2O}n ( 1 ) [H3CAM = 4‐hydroxypyridine‐2,6‐dicarboxylic acid, bpp = 1,3‐bis(4‐pyridyl)propane], was hydrothermally synthesized and characterized by elemental analyses, infrared spectroscopy, and single‐crystal X‐ray diffraction. Compound 1 presents a three dimensional self‐penetrating 8‐connected framework with the Schläfli symbol 420.53.65. In addition, the fluorescent properties and thermal stability of 1 were discussed as well. 相似文献