[英语学习]化学专业英语前言翻译.doc

3. AbstractReactions 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 manganeselanthanide clusters.4. AbstractTwo novel metalorganic 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 1,1N3 and 1,1,3N3 bridging modes, simultaneously. Furthermore, the solid fluorescent properties and TGA were studied.5. AbstractStructural characterization of a new self assembled coordination polymer of CuII, 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 4-hmt ligand to a linear Cu2(OBz)4 spacer. The magnetic study reveals that the Cu(II) ions are antiferromagnetically coupled (J = 323.5 cm1) through the synsyn carboxylate bridges.6. AbstractSimple PET chemosensors based on anthracene show a selective turn-on fluorescence sensing for Cu2+. The flexible receptor is favorable for turn-on sensing due to chelation enhanced fluorescence. Interestingly, the turn-on fluorescence sensing for Cu2+ 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.7. AbstractMetallacyclodimeric 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 1H NMR spectra.8. AbstractAn unprecedented (ethanol)4 cluster is observed in a photoluminescent silver(I) coordination polymer host, Ag2(dmt)2(nda)2EtOHn (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 OHO hydrogen bonds to form a R44(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.9. AbstractA new 3D sandwich-type MOF named Zn3(bptc)1.5(H2O)4C2H5OH2H2O (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, UVvis absorption spectra and photoluminescent properties of 1 have been investigated as well.10. AbstractThe 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, 1H, 13C NMR, IR, UVvis and MS techniques.11. AbstractA 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 31P1H NMR, 1H 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.12. AbstractThree 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. AbstractTwo 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 PCuP bond angle. Both two Cu(I) complexes exhibit a weak low-energy absorption at 360450 nm, ascribed to the Cu(I) to Hbmp metal-to-ligand charge-transfer (MLCT) transition, perhaps mixed with some ILCT character inside Hbmp. The room-temperature luminescences are observed for 1 and 2, both in solution and in the solid state, which originate from the MLCT excited states and vary markedly with the phosphine ligands.14. AbstractA new self-assembly gadolinium(III)iron(II) complex (Gd2Fe) was synthesized and characterized. Relaxivity studies showed that complex Gd2Fe exhibited higher relaxation efficiency compared with the clinically used Gd-DTPA. In vitro MR images on a 0.5 T magnetic field exhibited a remarkable enhancement of signal contrast for Gd2Fe than Gd-DTPA. The results indicated that Gd2Fe could serve as a potential MRI contrast agent.15. AbstractThe reaction of AgClO46H2O with (+/)-trans-epoxysuccinic acid (H2tes) in the presence of 2,6-dimethylpyridine afforded a three-dimensional (3-D) AgI coordination polymer Ag2(tes) (1), which exhibits an unusual 5-connected self-penetrating (4466)2 topological net (tes = (+/)-trans-epoxysuccinate). Comparison of the structural differences with our relevant finding, a two-dimensional (2-D) (4,8)-connected (456)2(418610) coordination polymer Ag4(ces)2 (S1) (ces = cis-epoxysuccinate), suggests that the carboxyl configuration on the ternary ring backbone of H2tes or H2ces ligand plays an important role in the construction of coordination networks.16. AbstractAn unusual three-dimensional (3D) pillared-layer 3d4f (Cu+Sm3+) heterometallic coordination polymer, Sm2Cu7Br6(IN)7(H2O)53H2On (1) (HIN = isonicotinic acid), has been successfully synthesized by hydrothermal reaction of Sm2O3, CuBr2, HIN, HClO4 and H2O, and characterized by elemental analyses, IR, PXRD, and single-crystal X-ray diffraction. The structure determination reveals that 1 possesses 3D heterometallic framework constructed upon unprecedented Cu7Br6nn+ inorganic layers linked by dimeric Sm2(IN)6 pillars. Additionally, the thermogravimetric analysis and luminescent property of 1 were investigated and discussed.17. AbstractA novel double-Dawson-anion-templated, triangular trinuclear Cu-trz unit-based metalorganic framework CuII8(trz)6(3-O)2(H2O)12P2W18O624H2O (1) (Htrz = 1,2,4-triazole), has been hydrothermally synthesized and characterized by routine methods. Compound 1 is the first example of the Cu3-triad triangular unit-based three-dimensional (3D) metalorganic framework templated by double P2W18O626 polyoxoanions. Furthermore, the electrochemical property of compound 1 has been studied.18. AbstractA new three-dimensional terbium-carboxylate framework Tb4L3(H2O)97H2O (1) (H4L = 4,4-(hexafluoroisopropylidene)diphthalic acid) has been hydrothermally synthesized and structurally characterized. The framework contains Tb2 and Tb4 clusters, and exhibits an unprecedented 4-nodal (3,4,5,8)-connected topology. In addition, the thermogravimetric analysis, luminescent and magnetic properties were investigated.19. AbstractThis paper reports two alkaline-earth metal phosphonates with formulae M(4-cppH2)2 M = Sr (1), Ba (2); 4-cppH3 = 4-carboxylphenylphosphonic acid. Compound 1 shows a chain structure made up of edge-sharing SrO8 polyhedra and PO3C tetrahedra. While in compound 2, the edge-sharing BaO8 polyhedra are connected by the PO3C tetrahedra to form a two-dimensional inorganic layer. Neighboring chains in 1 or layers in 2 are cross-linked by hydrogen bond interactions between the protonated carboxylate groups, resulting in three-dimensional supramolecular structures. The magnesium alloys coated with 1 or 2 films show significantly improved anti-corrosion behaviors compared to the bare substrate.20. AbstractA novel 3D inorganicorganic hybrid compound Cu3(en)(TTHA)(H2O)44.25H2On(1) (TTHA = 1,3,5-triazine-2,4,6-triamine hexaacetic acid; en = ethylenediamine) has been synthesized and characterized. Topological analysis shows that the compound is a new 3,10-connected 2-nodal net with point symbol (418.624.83)(43)2, further simplification of the structure by merging two 3-connected nodes and one 10-connected node together gives a rare uninodal 8-connected hex net, we conclude that the 2-nodal net found in the network is a hex-originated supernet. TG, IR, PXRD and photoluminescent spectra of the compound 1 are investigated.21. AbstractUnder hydrothermal conditions, Sm(NO3)36H2O reacts with N-(2-Hydroxyethyl)iminodiacetic acid (H3heidi), oxalic acid (H2Ox), in the presence of NiCl26H2O and NaOH, producing a novel two dimensional coordination polymer with the empirical formula of NaSm(Hheidi)(Ox)2H2O (1). X-ray diffraction analyses show that 1 crystallizes in the orthorhombic system, Pna21 space group, a = 25.9008(19) , b = 6.2593(5) , c = 8.7624(6) , in which the network of SmNO8 and oxalate units forms an extended two dimensional layered structure. To the best of our knowledge, 1 represents the first structurally characterized lanthanide complex containing H3heidi ligand. The variable-temperature magnetic property of 1 has been investigated and the results of magnetic determination suggest the existence of a weak antiferromagnetic coupling between the samarium ions.22. AbstractHeating WO2(S2CNBui2)2 with a slight excess of ArNCO (Ar = Ph, p-tolyl) results in the rapid formation of imido-ureato complexes W(NAr)2-ArNC(O)NAr(S2CNBui2)2, a transformation believed to occur via the bis(imido) intermediates W(NAr)2(S2CNBui2)2. The ureato ligand is easily removed (as the urea) upon addition of gaseous HCl to afford the dichloride W(NAr)Cl2(S2CNBui2)2. While bis(imido) complexes are unavailable from the direct reaction of isocyanates (or amines) with WO2(S2CNBui2)2, they can be prepared upon addition of dithiocarbamate salts to W(NBut)2(NHBut)2 addition of two equivalents of NH2Bui2Bui2NCS2 affording W(NBut)2(S2CNBui2)2 in which both imido groups are linear.23. AbstractA new neutral dimeric cyclometalated iridium complex containing bridging thiocyanate ligands, Ir(-SCN)(pqcm)22 (1, pqcmH = 2-phenyl-quinoline-4- carboxylic acid methyl ester), has been synthesized and structurally characterized. The photoluminescence (PL) spectrum of 1 shows emission maximum at 638 nm with a lifetime of 0.11 s and the PL quantum yield is ca. 0.012. The phosphorescence behaviours of 1 towards different solvents and metal ions were also investigated and the strong phosphorescence quenching by acetonitrile and two equivalents of Hg2+, Cu2+ and Ag+ ions were observed.24. AbstractIonothermal reaction of isophthalate (H2ip), and colbolt(II) nitrate under 1-ethly-3-methylimidazolium bromide (EMimBr) as solvent leads to a novel three dimensional metalorganic framework (EMim)2Co3(ip)4 (1). It can be described as an eight-connected CsCl-type net (42464) utilizing trinuclear Co(II) clusters as eight-connected nodes and ip ligands as linkers. The imidazolium cation EMim+ of the ionic liquid acting as charge-compensating agents has interactions with the framework. The magnetic properties studies show ferrimagnetic behavior for 1.25. AbstractUsing the deprotectionrealkylation methodology, a new electroactive tetrathiafulvalene-based bipyridine ligand, 5-2-4,5-Bis(methylthio)-1,3-dithiol-2-ylidene-5-(methylthio)-1,3-dithiol-4-ylthio-methyl-2,2-bipyridine (L), has been synthesized. Reactions of the above ligand with Re(CO)5Br or Re(CO)5Cl afford the corresponding tricarbonyl rhenium(I) complexes ReL(CO)3X (X = Br, 1; X = Cl, 2), respectively. Crystal structures of 1 and 2 have been described. The absorption properties of these new compounds have been studied. Electrochemical measurements have been performed and TTF/TTF+/TTF2+ redox processes are observed.26. AbstractThree carbon-bridged bis(phenolate) neodymium complexes, (MBMP)2Nd(3Cl)Li(THF)2Li(THF) (1), (MBBP)2Nd(3-Cl)Li(THF)2Li(THF) (2) and (THF)2Nd(EDBP)2Li(THF) (3) have been synthesized by one-pot reaction of NdCl3 and LiCH2SiMe3 with 6,6-methylenebis(2-tert-butyl-4-methylphenol) (MBMP-H2), 6,6-methylenebis(2,4-di-tert-butylphenol) (MBBP-H2) or 6,6-(ethane- 1,1-diyl)bis(2,4-di-tert-butylphenol) (EDBP-H2), respectively, in a molar ratio of 1:4:2. The definitive structures of complexes 2 and 3 were determined by X-ray diffraction studies. Experimental results show that 13 efficiently initiate the ring-opening polymerization (ROP) of -caprolactone and ROP of L-lactide.27. AbstractA 3D metal-organic framework Cd2(TZ)3(BDC)0.55H2On (15nH2O) (HTZ = 1H-tetrazole, H2BDC = 1,4-benzenedicarboxylic acid), has been hydrothermally synthesized and structurally characterized by single-crystal X-ray diffraction. The phase purity was confirmed by powder X-ray diffraction (PXRD), and the stability was identified by thermal gravimetric analysis (TG) and variable-temperature powder X-ray diffraction (VT-PXRD). The result of the single-crystal X-ray diffraction analysis indicates that 1 is a novel 3D microporous metal-organic framework constructed from Cd(II) metal centers and mixed linkers of TZ anions and BDC2 anions. Photoluminescent measurement elucidates that 1 displays a strong and broad emission peak at 423 nm, which suggests that 1 may be a potential purple-light material.28. AbstractTwo inorganicorganic hybrids, (MPDA)2n(Pb3I10)n (MPDA = p-Me3NC6H4NMe3) (1) and (H2EPDA)n(Pb2I6)n2nH2O (H2EPDA = p-Et2NHC6H4NHEt2) (2), have been solvothermally synthesized using p-phenylenediamine (PDA) as a precursor. Their iodoplumbate ions all show 1-D chain structures, but differ in interlinkage modes of PbI6 octahedra: the former is both face- and edge-sharing, while the latter is face-sharing. The chain-like structure in 1 was reported only once in the literature. The results of optical absorption spectra and theoretical calculations for compounds PbI2 and 12 reveal a quantum confinement effect. Photoluminescent analyses show that they all exhibit blue emissions upon UV irradiation, which mainly originate from charge transfer from iodine atoms to ammoniums.29. AbstractPlatinum(II) complexes, Pt(PDTC)(H2O)Cl and Pt(PDTC)(DMSO)Cl (1) (PDTC = pyrrolidinedithiocarbamate) have been prepared and characterized by IR, NMR and X-ray crystallographic methods. In the crystal structure of 1 the central platinum atom is coordinated to two sulfur atoms of PDTC, one sulfur atom of DMSO and one chloride ion adopting a square planar geometry with the average cis and trans bond angles of 90.00 and 171.62 respectively. The 1H and 13C NMR spectral data indicate the coordination of both PDTC and DMSO to platinum(II). The title complex was screened for antimicrobial effects and the results show that it exhibits significant activity against gram-negative bacteria (E. coli, P. aeruginosa), while the activities are moderate against molds (A. niger, P. citrinum) and yeasts (C. albicans, S. serevisaiae).30. AbstractA new stable mixed-ligand metal organic framework Zn2(tpt)2(2-atp)I2 1 (tpt = tris (4-pyridyl) triazine, 2-atp = 2-aminoterephthalate) with split channels has been synthesized and characterized. The nitrogen containing ligands tpt and 2-atp are selected to create attractive basic sites for the catalyst. The Knoevenagel condensation between benzaldehyde and the active hydrogen compound (ethyl cyanoacetate or malononitrile) is carried out using compound 1 as solid basic catalytic support. The test results indicate that 1 is an efficient base catalyst with selective catalytic properties. It gives 37% and 99% yield respectively for the condensation products ethyl (E)-cyanocinnamate and 2-benzylidenemalononitrile. TG data show that the solid catalyst sample is fairly thermally stable. The compound does not show any signs of decomposition until 420 C. PXRD data support that the catalyst remains its crystalline and framework stability after the catalysis process. These characters make it easily to be regenerated for the next cycle.31. AbstractA heteroleptic nickel-bis-1,2-dithiolene ionpair complex, BzQlNi(dmit)(mnt) (where BzQl+ = 1-(benzyl)quinolinium; dmit2 = 2-thioxo-1,3-dithiole-4,5-dithiolate, mnt2 = maleonitriledithiolate), was synthesized and characterized structurally, which exhibited novel magnetic bistability. The compound crystallized in triclinic system with space group P-1. The anions and cations form alternating layered alignments, and the anionic layer is built by the irregularly heteroleptic Ni(dmit)(mnt) chains, where the neighboring anions are connected via lateral-to-lateral SS contacts of dmit2 ligands. The temperature dependences of magnetic susceptibility follow the S = Heisenberg alternating linear-chain model in high-temperature phase and CurieWeiss law in lo