Positional isomeric and N-donor auxiliary chelating ligand effect on engineering crystalline architectures of four lead(II) complexes with diverse fluorescent properties
chelating ligand (bipy/phen) effect on engineering of crystalline architectures of four Pb(II) complexes with a pair of methyl-substituted 3-sulfobenzoic isomers: [Pb(4-msba)(phen)(H2O)] (1), [Pb(4-msba)(bipy)(H2O)]·H2O (2), [Pb(5-msba)(phen)2]·9H2O (3), and [Pb2(5-msba)2(bipy)2(H2O)2] (4) (4/5-msba = 4/5-methyl-3-sulfobenzoate, phen = 1,10-phenanthroline and bipy = 2,2′-bipyridine). The lead(II) ions exhibit
A series of aromatic sulfonic acids is synthesized by subjecting arenes and NaHSO4·H2O to high-speed ball milling in the presence of P2O5. It is suggested the aromatic sulfonation occurs via in situ generated H2SO4 to give aromatic sulfonic acids. In some cases, formation of diaryl sulfones was observed.
在P 2 O 5存在下,芳烃和NaHSO 4 ·H 2 O经高速球磨合成一系列芳香族磺酸。建议芳族磺化通过原位生成的 H 2 SO 4 发生以产生芳族磺酸。在某些情况下,观察到二芳基砜的形成。
NOVEL COMPOUND, AND METHOD FOR MEASURING IRON CONCENTRATION BY USING NOVEL COMPOUND AS CHELATE COLOR FORMER
申请人:WAKO PURE CHEMICAL INDUSTRIES LIMITED
公开号:EP2910607A1
公开(公告)日:2015-08-26
The present invention addresses the problem of providing a chelate color former which can measure the concentration of iron with high sensitivity and with low blank values when measuring the concentration of iron, and an iron concentration measurement method and kit that use this chelate color former. The present invention relates to: a compound represented by following formula [1] or a salt thereof
wherein, R1 and R2 each independently represent -SO3H or -CO2H; an iron concentration measurement method in which the compound is used as a chelate color former, the compound is brought into contact with iron in a sample, and the concentration of iron in the sample is measured on the basis of the degree of resulting color development; and a kit to be used therein.
Hydrogenation of tetrahydroxybutane to tetrahydrofuran
申请人:——
公开号:US20030149283A1
公开(公告)日:2003-08-07
Disclosed is a method for the hydrogenation of tetrahydroxybutane in the presence of supported rhenium catalysts and an acid to form tetrahydrofuran and its precursors.