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C38H38Mn2N2O14, triclinic, P1̅ (no. 2), a = 8.2828(12) Å, b = 10.428(2) Å, c = 12.152(3) Å, α = 113.44(2)°, β = 93.369(16)°, γ = 107.890(16)°, Z = 1, V = 896.5(3) Å3, Rgt(F) = 0.0578, wRref(F2) = 0.1288, T = 293(2) K. [ABSTRACT FROM AUTHOR]

C38H38Zn2N2O14, monoclinic, P21/n (no. 14), a=9.6906(6) Å, b=7.9055(5) Å, c=24.0501(18) Å, β=99.878(7)°, Z =2, V =1815.1(2) ų, Rgt(F)=0.0474, wRref(F²)=0.1143, T =293 K. [ABSTRACT FROM AUTHOR]

C46H38MnN3O8, triclinic P¯1 (no.2), a=8.9705(6) Å, b=12.0309(8) Å, c=18.4209(13) Å, α=96.303(2)°, β=103.884(2)°, γ=101.636(2)°, Z =2, V =1864.0(2) ų, Rgt(F)=0.0496, wRref(F²)=0.1274, T =296 K. [ABSTRACT FROM AUTHOR]

Two novel metal-organic coordination complexes [Cd(Zalto profen)2(H2O)3](H2O) (1), [Zn(Zaltoprofen)(H2O)]n(2) (where zaltoprofen = 5-(1-carboxyethyl)-2-(phenylthio)phenylacetic acid) have been synthesized under normal conditions and hydrothermal conditions, respectively. And characterized by single crystal X-ray diffraction, elemental analysis, spectral method (IR), powder X-ray diffraction (XRD), and fluorescent properties. Compound 1 crystallizes in the monoclinicCcspace group while compound 2 in the monoclinic system with space groupP21/c. [Cd(Zaltoprofen)2(H2O)3](H2O) (1) features 0-D structural, the hydrogen-bonds play a vital role in determining the crystal packing and construction of the extended 3-D supramolecular network. [Zn(Zaltoprofen)(H2O)]n(2) displays a 2D net with alternately arranged left- and right-handed helical chains. The O–H···O hydrogen bonding play an important role in stabilizing the structure. Supplemental materials are available for this article. Go to the publisher's online edition ofSynthesis and Reactivity in Inorganic, Metal-Organic, and Nano-Metal Chemistryto view the supplemental file. [ABSTRACT FROM PUBLISHER]

[Zn4(L1)2(OAc)2(CH3CH2OH)2] and [CuL2(H2O)] with new asymmetric Salamo-type ligands have been synthesized and characterized. There are two coordination geometries (trigonal bipyramidal and square pyramidal) in the Zn(??) complex, and the Cu(II) complex has square-pyramidal geometry. A self-assembling continual zigzag chain is formed by intermolecular hydrogen bonds in the Cu(II) complex. The self-assembling array of the Zn(II) complex is linked by intermolecular C–H?O and C–H?? interactions. Blue emissions of the Zn(II) and Cu(II) complexes in DMF solution are exhibited by fluorescence. [ABSTRACT FROM AUTHOR]

The tri-nuclear cobalt(II) complex, [(CoL)2(μ-OAc)2Co]·2CHCl3(H2L = 5,5'-dimethoxy-2,2'-[(ethylene)dioxybis(nitrilome thylidyne)]diphenol), has been synthesised. Its X-ray structure shows it to contain two acetate ions coordinating to the three cobalt(II) atoms through Co-O-C-O-Co bridges, and four μ-phenoxo-oxygen atoms from two [CoL] chelates also coordinating to the central cobalt(II) atom. The complex possesses two penta- and one hexa-coordinated cobalt atoms. The crystal packing of the CoII complex shows that a 2D-layer supramolecular network parallel to the ab-plane is formed through intermolecular C-H···O and C-H···Cl hydrogen bonding interactions. [ABSTRACT FROM AUTHOR]

Abstract: Four new luminescent complexes, namely, [Eu(aba)2(NO3)(C2H5OH)2] (1), [Eu(aba)3(H2O)2]·0.5 (4, 4′-bpy)·2H2O (2), [Eu2(aba)4(2, 2′-bpy)2(NO3)2]·4H2O (3) and [Tb2(aba)4(phen)2(NO3)2]·2C2H5OH (4) were obtained by treating Ln(NO3)3·6H2O and 4-acetamidobenzoic acid (Haba) with different coligands (4, 4′-bpy=4, 4′–bipyridine, 2, 2′-bpy=2, 2′-bipyridine, and phen=1, 10-phenanthroline). They exhibit 1D chains (1–2) and dimeric structures (3–4), respectively. This structural variation is mainly attributed to the change of coligands and various coordination modes of aba molecules. Moreover, the coordination units are further connected via hydrogen bonds to form 2D even 3D supramolecular networks. These complexes show characteristic emissions in the visible region at room temperature. In addition, thermal behaviors of four complexes have been investigated under air atmosphere. The relationship between the structures and physical properties has been discussed. [Copyright &y& Elsevier]

Abstract: Mononuclear and trinuclear Cu(II) complexes with chemical formula [CuL]·CH3OH (1) and [{(Cu(μ-L))2(OAc)2}Cu] (2), where H2L=2,2′-[1,1′-(ethylenedioxydinitrilo)diethylidyne]diphenol, have been synthesized and characterized by elemental analyses, 1H NMR, IR and UV–vis spectra et al. Crystallographic data of complex 1 reveal the formation of an asymmetric mononuclear structure and a slight distortion toward tetrahedral geometry from the square planar structure, in which the introduction of the non-coordinated methanol molecule lead to the assembly of the 1D chains by hydrogen bonding, Cu⋯π and π⋯π interactions. Complex 2 have the elongated square pyramidal geometries for the two terminal Cu(II) ions and an octahedral coordinated geometry for the central Cu(II) ion. In complex 2, two acetate ions coordinate to three Cu(II) ions adopting a familiar syn–syn (μM-O-C-O-M) coordinated fashion. The central Cu(II) ion sits in a crystallographic inversion centre. Therefore, the whole molecule of complex 2 is rigorously centrosymmetric, and forms a 3D supramolecular networks through intermolecular C–H⋯O and C–H⋯π interactions. [Copyright &y& Elsevier]

Two new complexes, [Cu(L1)2] (1) and [Cu(L2)2(H2O)]·CH3OH (2), have been synthesized via the complexation of copper(II) acetate monohydrate with two mono-oxime chelating ligands (HL1: 4-[(Methoxyimino)(phenyl)methyl]-5-methyl-2-phenyl-1H- pyrazol-3(2H)-one and HL2: 4-[(Ethoxyimino)(phenyl)methyl]-5-methyl-2-phenyl-1H-pyrazol-3(2H)-one), respectively. X-ray crystal structure determination of the two complexes show that complex 1 consists of one copper(II) ion, two bidentate (L1)- units, and the copper atom of complex 1 has a square planar geometry distorted tetrahedrally with four-coordination, while complex 2 consists of one copper(II) ion, two bidentate (L2)- units, one coordinated H2O, and one crystallizing methanol molecule, as expected from the analytical data. And the copper atom of complex 2 has a slightly distorted tetragonal pyramid geometry with five-coordination. Complex 2 is a self-assembling infinite chain supramolecular structure formed by intermolecular hydrogen bonds. Meanwhile, the photophysical properties of the resulted complexes have also been discussed. [ABSTRACT FROM AUTHOR]

Abstract: Three new supramolecular complexes, [Cu(L1)H2O] n (1), [Zn(L2)(H2O)2] n (2), and [Cd(L2)(H2O)2] n (3), have been synthesized and characterized by FT-IR spectra, fluorescence spectra, and thermal analyses. And the structures of complexes 1–3 have been elucidated by X-ray analyses. Complex 1 is square pyramidal geometry with an unusually long bond (2.262Å) from penta-coodinated CuII center to the oxygen atom of the apical coordinated water molecule. Molecules are linked by hydrogen bonding between the coordinated water and the phenolic oxygen atoms of adjacent molecules, thus formed a self-assembling continual zigzag chain supramolecular structure. The crystal structure of complex 2 (or 3) has indicated that the complex consists of one ZnII (or CdII) atom, one L2− unit and two coordinated water molecules, the coordination number of the ZnII (or CdII) atom is six, and formed an infinite metal–water chain supramolecular structure by intermolecular hydrogen bonds and π–π stacking of neighboring benzene rings. Meanwhile, the thermal and photophysical properties of the resulted complexes have also been discussed. [Copyright &y& Elsevier]

Nanofiber-structured hydrogels with robust mechanical properties are promising candidates for the development of multifunctional materials in advanced fields. However, creating such materials that combine the virtues of high elongation, robust strength, and good elasticity remains an enormous challenge. Here, we demonstrate a nature-inspired methodology to fabricate dermis-mimicking network structured electrospun nanofibrous hydrogels with robust mechanical properties by combining the advantages of sustainable plant-based zein and elastic waterborne polyurethane (WPU). The reversible hydrogen bonding and strong covalent bonding between zein and WPU molecules are constructed in the double-network (DN) structured nanofibrous hydrogels (NFHs) with tunable stretchability and strength. The resulting NFHs exhibit the integrated characteristics of a stretch of 683%, a fracture strength of 6.5 MPa, a toughness of 20.7 MJ m−3, and complete recovery from large deformation. This nature-inspired structural design strategy may pave the way for designing mechanically robust nanofibrous hydrogels in structurally adaptive and scalable form. [ABSTRACT FROM AUTHOR]

C46H38MnN3O8, triclinic P¯1 (no.2), a=8.9705(6) Å, b=12.0309(8) Å, c=18.4209(13) Å, α=96.303(2)°, β=103.884(2)°, γ=101.636(2)°, Z =2, V =1864.0(2) ų, Rgt(F)=0.0496, wRref(F²)=0.1274, T =296 K. [ABSTRACT FROM AUTHOR]

C38H38Zn2N2O14, monoclinic, P21/n (no. 14), a=9.6906(6) Å, b=7.9055(5) Å, c=24.0501(18) Å, β=99.878(7)°, Z =2, V =1815.1(2) ų, Rgt(F)=0.0474, wRref(F²)=0.1143, T =293 K. [ABSTRACT FROM AUTHOR]

• A multifunctional fluorescent sensor Cd-MOF was successfully synthesized using chiral ligands. • It can be used to detect HSO 4 −, acidic amino acids, and can relay to recognize alkaline amino acids. • It has significant advantages such as fast response, high selectivity, good anti-interference, and excellent recyclability. A multifunctional probe Cd-MOF was successfully prepared by hydrothermal reaction using Cd2+ as a node, 1,3,5-triimidazoly benzene (L) and ligands D(+)-camphoric acid (D-H 2 cam) as linkers. It was characterized by single crystal X-ray diffraction (XRD), powder X-ray diffraction (PXRD), chromaticity coordinates (CIE), and thermogravimetric analysis (TGA). The study of fluorescence properties revealed that the fluorescence of Cd-MOF at 325 nm was significantly quenched in the presence of HSO 4 − or acidic amino acids (glutamate (Glu) or aspartic acid (Asp)) because of the formation of hydrogen bonds between analyte and Cd-MOF. Interestingly, the in-situ generated [Cd-MOF-Glu/Asp] system could be used for relay recognition of basic amino acids arginine (Arg) and lysine (Lys). Fluorescence could be 'turned on' under the same experimental conditions. This could be attributed to the destruction of the hydrogen bond between Cd-MOF and acidic amino acids. The sensing process possessed outstanding sensitivity and selectivity, rapid time responsiveness, and recyclability in aqueous solution. Finally, the sensing mechanisms of Cd-MOF and [Cd-MOF-Glu/Asp] systems were investigated by PXRD, UV spectroscopy, and DFT theoretical calculations. A multifunctional probe Cd-MOF was successfully prepared by hydrothermal reaction, Cd(II) as a node, 1,3,5- triimidazoly benzene (L) and ligands D(+)-camphoric acid (D-H 2 cam) as linkers. The study of fluorescence properties reveals that the fluorescence of Cd-MOF at 325 nm is significantly quenched in the presence of HSO 4 − or acidic amino acids (glutamate (Glu) or aspartic acid (Asp)) because of the formation of hydrogen bonds between analyte and Cd-MOF. Interestingly, the in-situ generated [Cd-MOF-Glu/Asp] system can be used for relay recognition of basic amino acids arginine (Arg) and lysine (Lys). [Display omitted] [ABSTRACT FROM AUTHOR]

Abstract: An unprecedented linear supramolecular manganese(III)-lithium(I) coordination polymer, [MnIIIL(OH)2LiI] n , has been prepared and structurally characterized. The polymer is a one-dimensional infinite Mn(III)–O–Li(I) chain supramolecular structure formed by intermolecular O–H···O and O–H···Cl hydrogen bonds and π–π stacking of neighboring benzene rings. [Copyright &y& Elsevier]

Three trinuclear complexes constructed from a naphthalenediol-based bis(Salamo)-type tetraoxime ligand (H4L1), [Cu3(L1)(OAc)2]·CH3OH (1), [Zn3(L1)(OAc)2(CH3OH)2]·4CHCl3 (2), and [Cu2(L1)Na(NO3)(CH3OH)] (3), and one dinuclear complex, [{Cu(L2)}2] (4), based on an unexpected ligand H2L2 derived from the cleavage of H4L1 have been synthesized and characterized by X-ray diffraction analyses. Different anionic sources, transition metal salts, and rationally controlled reaction conditions play important roles in the construction of the resulting complexes with variable coordination geometries (coordination number ranges from 4 to 7), and four types of supramolecular network were controlled by noncovalent interactions, such as hydrogen bond, π···π stacking, C–H···π, Cu···π, and halogen-related interactions. The fluorescence properties of H4L1 and its complexes were investigated, and 2 exhibits unique bright cyan–yellow visible fluorescent emissions in different solvents. [ABSTRACT FROM AUTHOR]

Abstract: Two new lanthanide supramolecular complexes, [Tb(qoa)2(H2O)2]⋅NO3 ⋅ H2O (1) and [Er(qoa)3] ⋅ 2H2O (2) [qoa=(8-quinolinyloxy)acetate] were obtained by treating the corresponding nitrates and (8-quinolinyloxy)acetic acid (Hqoa) under hydrothermal conditions. Complex 1 possesses a 1D zigzag chain bridged by the qoa anions, which is further connected to form a 3D supramolecular framework via hydrogen bonds and π–π attractions. Compound 2 is a mononuclear structure and the coordination units are further assembled to a 1D helical chain parallel to the b-axis via hydrogen bonds. Obviously, various coordination modes of the qoa anions and the intermolecular attractions have effect on the formations of two complexes. The solid-state luminescent behavior of 1 has been investigated at room temperature. [Copyright &y& Elsevier]

Abstract: Five new lanthanide supramolecular complexes, namely, [Sm(oqa)2(H2O)4]2 (ClO4)2 ·(bpy)2 (1), [Ln(oqa)3]·2H2O [Ln=Sm(2), Gd(3)] and [Ln(oqa)2(NO3)(H2O)] [Ln=Pr(4), Eu(5)] (oqa=4-oxo-1(4H)-quinolineacetate, bpy=4,4′-bipyridine), have been synthesized under hydrothermal conditions. These complexes exhibit three typical structure features. Complex 1 possesses a dimeric structure, which is further connected together through hydrogen bonds and π–π attractions, forming a 3D supramolecular framework. Compounds 2–3 are isomorphous and contain 1D ring-like chains, which are further interconnected by the oqa ligands into 2D sheet-like structures. 4 and 5 exhibit eight-connected 3D network of 424·64-bcu topology. The various coordination modes of carboxylate ligands and the selection of the counterions have clearly affected the topological structures. Furthermore, the solid-state luminescent properties of complexes 1, 2 and 5 were investigated at room temperature and they show intense, characteristic emissions in the visible region. [Copyright &y& Elsevier]

The title AgII complex, [Ag2(C5H10NS2)4], has been obtained by the reaction of AgNO3 and Na(detc) with a 1:2 molar ratio in a methanol solution at 353 K (detc = N, N-diethyl­dithio­carbamate). In the crystal structure of the complex, two detc anions chelate to an AgII ion in an S, S′-bidentate manner, and an S atom of the detc anion bridges to the neighboring AgII ion to form the centrosymmetric dinuclear mol­ecule. [ABSTRACT FROM AUTHOR]