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Five novel three-dimensional (3D) heterometallic coordination polymers, [ZnCa(dcppa)(DMF) 2 ] n ( 1 ), [ZnCa(dcppa)(DMA) 2 ] n ( 2 ), [ZnBa(dcppa)(DMF) 2 ] n ( 3 ), [ZnBa(dcppa)(DMA) 2 ] n ( 4 ), and [ZnNa(dcppa)(DMF)] n · n (Me 2 NH 2 )· n (H 2 O) 2 ( 5 ) (Me 2 NH 2 + = dimethylammonium cation; DMA = N,N-dimethylacetamide; DMF = N,N-dimethylformamide; H 4 dcppa = 3-(3′,5′-dicarboxylphenoxy) phthalic acid), have been hydrothermally synthesized and structurally characterized with the aid of single-crystal X-ray diffraction. Complexes 1 – 5 are heterometallic Zn/M (M = Ca, Ba, Na) coordination polymers constructed from a semirigid H 4 dcppa ligand and tetranuclear metal clusters. Topological analyses show that 1 / 3 / 4 and 2 / 5 exhibit complicated 3D framework that could be simplified into binodal (3,6)-connected rtl nets and binodal (3,6)-connected flu nets, respectively. Unlike 1 – 4 , 5 features a unique 3D anionic framework with Me 2 NH 2 + cations occupying the voids. From the viewpoint of crystal structure diversity and comparison, our results further prove that the coordination modes of metal ions and ligands play indispensable roles in the construction of the final crystal structure. Moreover, the thermal stability and solid-state luminescence properties of 1 – 5 have also been investigated at room temperature.

Five new coordination polymers, namely [Cd3(dcppa)(Hdcppa)(H2O)]·(Me2NH2)·(DMA)2 (1), [CdCa(dcppa)(DMA)2] (2), [CdCa(dcppa)(H2O)2(DMA)] (3), [Ba2(H2dcppa)2(μ2-H2O)(H2O)(DMA)]·(H2O) (4), and [Ba2(H2dcppa)2(μ2-H2O)(H2O)(DMF)]·(H2O) (5) (Me2NH2+ = dimethylammonium cation; DMA = N,N-dimethylacetamide; DMF = N,N-dimethylformamide; H4dcppa = 3-(3′,5′-dicarboxylphenoxy) phthalic acid), were synthesized under solvothermal conditions and structurally characterized. Compound 1 presents a unique binodal (3,6)-connected {43}2{47·88} topology structure, which is a 2D layer anionic network with Me2NH2+ cations occupying the voids, built upon a trinuclear Cd3 unit. Compounds 2 and 3 are all bimetallic Cd–Ca compounds consisting of tetranuclear Cd2Ca2 units extending to a 3D (3,6)-connected rtl topology structure and a 2D (3,6)-connected kgd topology structure, respectively. Compounds 4 and 5 are isostructural and exhibit an unprecedented 3D (4,10)-connected topology structure in which a 1D infinite barium chain is observed. From the viewpoint of crystal structure diversity and comparison, our results further demonstrate that the coordination modes of metal ions and ligands are the vital elements in forming the final crystal structure. In addition, the thermal stabilities and solid-state luminescence properties of compounds 1–5 are also discussed.

*, Feng Xu, De Liang Yang and Jie YangABSTRACT China is one of most important countries for production and consumption of herbicide. Although the chemical weeding technology promoted the development of agricultural modernization in Chinese, it led to the negative effects to agriculture. In particular, the weeds resistant herbicide in paddy field had been serious challenge for safe production of rice. The chemical control technology for weed resistant herbicide with effective, low cost and safety characteristic will be key problem being solved in futhure.Key words: China, herbicide-resistance; weed; paddy.

During the debugging of electric actuator system and aircraft pose control, the electric zero position of electric actuators need complicated adjust because of the existence of machining error in machine after electric actuator system is restart. This paper proposes a on-line parameter configuration method, develops a status parameter memory system of electric actuator system. The system take XC3S400 as core chip and AT24C02 as memory chip, save the state information about electric zero position regulated parameter, important control parameter, and etc. Through on-line parameter configuration, we can abridge the adjustment step of electric zero position which happens in after the electric actuator system is switch off and restarted, simplify operation difficulty, saving time, and improve quickly responding ability of system.

A new efficient and mild protocol for synthesizing a series of novel bis(dipyrromethanes) with versatile arylene linkers through an indi- um(III) chloride-catalyzed condensation reaction between various dialdehydes and pyrrole has been developed. This protocol is applicable to constructing a variety of bis(dipyrromethanes) with diverse functional linkers, which provides a powerful route to construct libraries of functionalized porphyrin dimers and even multiporphyrin arrays.

A general and efficient protocol has been developed to synthesise a series of novel porphyrin dimers with versatile aryl linkers via a simultaneous condensation-cyclisation-oxidation reaction of diverse bis(dipyrromethanes) with dipyrromethane-dicarbinol catalysed by indium(iii) chloride at room temperature in an efficient CH2Cl2 and CH3CN mixed-solvent. The reaction yields increased to 21–26 % based on liquid chromatography-mass spectrometry (LCMS) and isolated yields were 13–19 % due to the use of the proper mixed-solvent. This mild method is applicable to the preparation of linker-tunable porphyrin dimers with targeted functionalities and could potentially be extended to the single-step construction of longer functionalised multiporphyrin arrays.

In the title compound, [Cu(C76H92N4O4)], the central Cu(II) ion is situated on an inversion centre. The porphyrinate core exhibits a nearly planar conformation [maximum deviation = 0.027 (3) Å], with Cu—N distances of 1.997 (2) and 2.001 (2) Å. The benzene rings of the 4-octyloxyphenyl groups are rotated at angles of 84.02 (8) and 77.02 (6)° with respect to the mean plane of the porphyrin fragment. The two terminal C atoms in the octyl group are disordered over two positions of equal occupancy.

In the title compound, C15H17N3OS3·H2O, the piperidine ring has a chair conformation. The crystal structure is stabilized by weak intermolecular N—H...O, O—H...N and O—H...O hydrogen-bonding interactions.

A new efficient and mild protocol for synthesizing a series of novel bis(dipyrromethanes) with versatile arylene linkers through an indi- um(III) chloride-catalyzed condensation reaction between various dialdehydes and pyrrole has been developed. This protocol is applicable to constructing a variety of bis(dipyrromethanes) with diverse functional linkers, which provides a powerful route to construct libraries of functionalized porphyrin dimers and even multiporphyrin arrays.

The fullerenes C 60 and C 70 were prepared in gram quantities by the Kraetschmer-Huffman method and purified by Al 2 O 3 column chromatography. The characterization of mass spectra of C 60 and C 70 were studied by EIMS, DEIMS, FDMS, and metastable ion MS techniques.

In the title compound, [Ni(C72H84N4O4)], the four-coordinate NiII ion in the middle of the planar 24-membered porphyrin ring is located on a crystallograpic inversion center, with Ni—N distances of 1.946 (2)–1.951 (2) Å. The 4-heptyloxyphenyl groups are twisted with respect to the porphyrin mean plane, the dihedral angles being 88.5 (3) and 79.1 (2)°.

A general and efficient protocol has been developed to synthesise a series of novel porphyrin dimers with versatile aryl linkers via a simultaneous condensation-cyclisation-oxidation reaction of diverse bis(dipyrromethanes) with dipyrromethane-dicarbinol catalysed by indium(iii) chloride at room temperature in an efficient CH2Cl2 and CH3CN mixed-solvent. The reaction yields increased to 21–26 % based on liquid chromatography-mass spectrometry (LCMS) and isolated yields were 13–19 % due to the use of the proper mixed-solvent. This mild method is applicable to the preparation of linker-tunable porphyrin dimers with targeted functionalities and could potentially be extended to the single-step construction of longer functionalised multiporphyrin arrays.

The molecule of the title compound, [Ni(C68H76N4O4)], is located on a crystallographic inversion center. The Ni—N distances within the square-shaped coordination environment are 1.951 (2) and 1.954 (2) Å. Three terminal C atoms in one of the hexyl groups are disordered over two sets of sites, with site-occupancy factors of 0.615 (13) and 0.385 (13).