3. Abstract
Reactions between hexanuclear manganese pivalate with lanthanide salts (chlorides or nitrates), in the presence of potassium hydroxide, 2-pyridylmethanol and sodium azide leads to formation of a new family of hexaheteronuclear manganese–lanthanide clusters.
4. Abstract
Two novel metal–organic frameworks of [M3(ptz)2(N3)4(H2O)2] (M = Zn(1), Cd(2)) (ptz =
5-(4-pyridyl)tetrazolate) have been prepared hydro(solvo)thermally by reactions of 4-cyanopyridine and excess NaN3 in the presence of zinc and cadmium chloride, respectively. The overall structure motif of complexes 1 and 2 show pillared layered frameworks and feature an unprecedented 3-nodal network with (3,5,6)-connectivity. The layer is of particular interest as it is constructed by μ1,1–N3 and μ1,1,3–N3 bridging modes, simultaneously. Furthermore, the solid fluorescent properties and TGA were studied.
?
?
5. Abstract
Structural characterization of a new self assembled coordination polymer of Cu, hexamine (hmt) and benzoate (OBz), [Cu4(OBz)8(hmt)]n (1), reveals that it is a cubic non-interpenetrating diamondoid network formed by the coordination of the μ4-hmt ligand to a linear [Cu2(OBz)4] spacer. The magnetic study reveals that the Cu(II) ions are antiferromagnetically coupled (J = ? 323.5 cm) through the syn–syn carboxylate bridges.
?1II
6. Abstract
Simple PET chemosensors based on anthracene show a selective turn-on fluorescence sensing for Cu. The flexible receptor is favorable for turn-on sensing due to chelation enhanced fluorescence.
Interestingly, the turn-on fluorescence sensing for Cu is hardly disturbed by the competitive cations and other highly prevalent species in biological and environmental systems, implying a potential in the biological and environmental applications.
2+
2+
7. Abstract
Metallacyclodimeric complex of [(Me4en)Pd(L)]2(PF6)4 (Me4en = N,N,N′,N′-tetramethylethylenediamine; L = 1,3-bis(4-pyridyl)tetramethyldisiloxane) is a sensitive container for dioxane via appropriate size effect. The equilibrium between the “included” and “free” dioxane species has been monitored by temperature-dependent H NMR spectra.
1
8. Abstract
An unprecedented (ethanol)4 cluster is observed in a photoluminescent silver(I) coordination polymer host, [Ag2(dmt)2(nda)·2EtOH]n (1, dmt = 2,4-diamino-6-methyl-1,3,5-triazine, H2nda =
naphthalene-1,4-dicarboxylic acid, EtOH = ethanol). In 1, two pairs of symmetry-related ethanol molecules are hydrogen bonded with each other by OH?O hydrogen bonds to form a R4(8) hydrogen bond motif where all the ethanol molecules are proton acceptor and proton donor at the same time. The thermal stability and luminescent behavior of 1 were also discussed.
4
9. Abstract
A new 3D sandwich-type MOF named [Zn3(bptc)1.5(H2O)4]·C2H5OH·2H2O (1) (H4bptc =
biphenyl-2,5,2',5'-tetracarboxylic acid) was obtained by solvothermal reaction, which represents a rare trinodal (3, 4, 10)-connected topology network. Moreover, the thermal stability, UV–vis absorption spectra and photoluminescent properties of 1 have been investigated as well.
10. Abstract
The synthesis and characterization of novel metal-free and cobalt phthalocyanine, peripherally symmetrically derived from
2,3,6,7,10,11,13,14-octahydro-5H,9H-4,12-(propanothiopropano)-1,8,15,23,4,12-benzotetrathiodiazacycloheptadecane-17,18-dicarbonitrile (4) which was prepared by the reaction of
1,9-diaza-5,13-dithiocyclohexadecane (3) and 1,2-bis(2-iodoethylmercapto)-4,5-dicyanobenzene (2) was
carried out. The novel compounds were characterized by using elemental analysis, H, C NMR, IR, UV–vis and MS techniques.
113
11. Abstract
A novel cationic dinuclear ruthenium complex [RuCl(HL)(TFTPP)]2 (H2L =
2,6-bis(5-phenyl-1H-pyrazol-3-yl)pyridine; TFTPP = tri(p-trifluoromethylphenyl)phosphine) has been synthesized and characterized by P{H} NMR, H NMR, elemental analysis and X-ray crystallography. This complex is the first cationic dinuclear ruthenium complex bearing N4 ligand characterized by single crystal X-ray analysis. It exhibits good catalytic activity for the transfer hydrogenation of ketones in refluxing 2-propanol.
31
1
1
12. Abstract
Three new metal-organic coordination polymers, [Mn(4,4′-bpy)(H2BTCA)(H2O)2](4,4′-bpy) (1), [Na2Co(BTCA)0.5(OXA)]·3H2O (2) and [Na2Co(BTCA)(H2O)2] (3), (H4BTCA =
benzene-1,2,4,5-tetracarboxylic acid, H2OXA = oxalic acid) have been synthesized, which are characterized by elemental analysis, infrared spectrum and x-ray crystal diffraction. Complex 1
possesses a 3D polymeric structure, which is comprised of (4,4)-layers. Hydrogen bonds play a dominant role in the construction of the final 3D supramolecule. 1D channels are observed in complex 2, which can be ascribed to pillared-layer motifs.
13. Abstract
Two 2-(2-benzimidazolyl)-6-methylpyridine (Hbmp) copper(I) complexes bearing PPh3 and 1,4-bis(diphenylphosphino)butane (dppb), namely, [Cu(Hbmp)(PPh3)2](ClO4) (1) and
[Cu(Hbmp)(dppb)](ClO4) (2), have been synthesized. X-ray diffraction analysis reveals that the most significant influence of the phosphine ligands on the structures is on the P–Cu–P bond angle. Both two Cu(I) complexes exhibit a weak low-energy absorption at 360–450 nm, ascribed to the Cu(I) to Hbmp metal-to-ligand charge-transfer (MLCT) transition, perhaps mixed with some ILCT character inside Hbmp.
化学专业英语前言翻译
