排序方式: 共有19条查询结果,搜索用时 203 毫秒
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Pushkarev VE Tolbin AY Zhurkin FE Borisova NE Trashin SA Tomilova LG Zefirov NS 《Chemistry (Weinheim an der Bergstrasse, Germany)》2012,18(29):9046-9055
Phthalocyanine compounds of novel type based on a bridged bis-ligand, denoted "intracavity" complexes, have been prepared. Complexation of clamshell ligand 1,1'-[benzene-1,2-diylbis(methanediyloxy)]bis[9(10),16(17),23(24)-tri-tert-butylphthalocyanine] ((clam,tBu)Pc(2)H(4), 1) with lanthanide(III) salts [Ln(acac)(3)]?n?H(2)O (Ln = Eu, Dy, Lu; acetylacetonate) led to formation of double-deckers (clam,tBu)Pc(2)Ln (2?a-c). Formation of high molecular weight oligophthalocyanine complexes was demonstrated as well. The presence of an intramolecular covalent bridge affecting the relative arrangement of macrocycles was shown to result in specific physicochemical properties. A combination of UV/Vis/NIR and NMR spectroscopy, MALDI-TOF mass-spectrometry, cyclic voltammetry, and spectroelectrochemistry provided unambiguous characterization of the freshly prepared bis-phthalocyanines, and also revealed intrinsic peculiarities in the structure-property relationship, which were supported by theoretical calculations. Unexpected NMR activity of the paramagnetic dysprosium complex 2?b in the neutral π-radical form was observed and examined as well. 相似文献
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CaC2O4真空热分解中,第一阶段生成的CO中47%歧化成CO2和C;第二阶段生成的CO与第一阶段生成的C发生气化反应,发生反应的比例随样品量增加而增大。用CaCO3标定CO后再用CaC2O4标定CO可以排除这些干扰。本文提出了一个对任意气体标定的方法。 相似文献
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Alexander Yu. Tolbin Victor E. Pushkarev Gennadiy F. Nikitin 《Tetrahedron letters》2009,50(34):4848-709
A direct synthetic method to produce heteronuclear and heteroligand clamshell-type binuclear phthalocyanines via a nucleophilic coupling reaction between A3B-type monophthalocyanines is developed with the target compounds demonstrating the possibility to form sandwich-type heterocomplexes for the first time. 相似文献
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Dr. Victor E. Pushkarev Dr. Alexander Yu. Tolbin Fedor E. Zhurkin Dr. Nataliya E. Borisova Dr. Stanislav A. Trashin Prof. Larisa G. Tomilova Prof. Nikolay S. Zefirov 《Chemistry (Weinheim an der Bergstrasse, Germany)》2012,18(29):9046-9055
Phthalocyanine compounds of novel type based on a bridged bis‐ligand, denoted “intracavity” complexes, have been prepared. Complexation of clamshell ligand 1,1′‐[benzene‐1,2‐diylbis(methanediyloxy)]bis[9(10),16(17),23(24)‐tri‐tert‐butylphthalocyanine] (clam,tBuPc2H4, 1 ) with lanthanide(III) salts [Ln(acac)3] ? n H2O (Ln=Eu, Dy, Lu; acetylacetonate) led to formation of double‐deckers clam,tBuPc2Ln ( 2 a – c ). Formation of high molecular weight oligophthalocyanine complexes was demonstrated as well. The presence of an intramolecular covalent bridge affecting the relative arrangement of macrocycles was shown to result in specific physicochemical properties. A combination of UV/Vis/NIR and NMR spectroscopy, MALDI‐TOF mass‐spectrometry, cyclic voltammetry, and spectroelectrochemistry provided unambiguous characterization of the freshly prepared bis‐phthalocyanines, and also revealed intrinsic peculiarities in the structure–property relationship, which were supported by theoretical calculations. Unexpected NMR activity of the paramagnetic dysprosium complex 2 b in the neutral π‐radical form was observed and examined as well. 相似文献