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1.
乙基二苯甲酰甲烷是一种光吸收性能良好的化合物。该法以苯甲酸乙酯和苯乙酮为起始原料,经克莱森缩合生成二苯甲酰甲烷,再与溴乙烷进行烷基化反应,最后生成乙基二苯甲酰甲烷,并对合成产物进行结构分析及紫外光吸收性能表征。 相似文献
2.
Cobalt(Ⅱ) can form complexes with Hdbm in different environments. Hdbm reacted with cobalt nitrate to give complex 1 [Co(dbm)2·2H2O]. When complex 1 reacted with pyridine, α-stilbazole or 4,4′-bipyridine respectively, complex 2 [Co(DBM)2Py2] (Py=pyridine), 3 [Co(DBM)2Sbz2] (Sbz=α-stilbazole) or 4 [Co(DBM)2BPy]n was obtained in turn through metathetical reaction. The coordination modes are octahedral polyhedrons. In the crystal structures, the two dbms take the plane position and two other donor molecules take the axial position. CCDC: 196070 for complex 2; 186859 for complex 3. 相似文献
3.
Bao-Qing Ma Song Gao Zhe-Ming Wang Chun-Sheng Liao Chun-Hua Yan Guang-Xian Xu 《Journal of chemical crystallography》1999,29(7):793-796
Bis(dibenzoylmethane)copper Cu(dbm)2 has been synthesized and its structure determined by x-ray diffraction. It crystallizes in the monoclinic system, space group C2/c, with a = 25.936(3), b = 5.9806(8), c = 16.4908(16) Å, = 114.998(8)°, Z = 4, and V = 2318.3(4) Å3. The Cu atom is located at a symmetry center and surrounded by four O atoms from two dbm molecules to form a plane square coordination environment. On the a–c plane the molecules are orderly arranged to result in a layered structure, and parallel to crystallographic b-axis they form a molecular column due to the effect of aromatic stacking. 相似文献
4.
S. A. Yamashkin E. A. Oreshkina N. V. Zhukova 《Chemistry of Heterocyclic Compounds》2007,43(8):1044-1051
A study was carried out on the reactions of 4-amino-2,3-dimethyl-and 4-amino-1,2,3-trimethylindoles with acetylacetone, dibenzoylmethane,
ethyl acetoacetate, ethyl trifluoroacetoacetate, and ethyl oxaloacetate. Methods were developed for the synthesis of a series
of substituted pyrrolo-[2,3-h]quinolines.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 8, pp. 1234–1242, August, 2007. 相似文献
5.
Z. Tetere D. Zicane I. Ravina M. Petrova E. Gudrinece U. Kalejs 《Chemistry of Heterocyclic Compounds》2002,38(6):677-681
1-(1-Carboxy-2-R-4-methylcyclohex-4-enyl)carbonyl- and 1-(2-R-4-methylcyclohex-4-enyl)carbonyl-3,5-dimethyl(diphenyl)pyrazoles have been obtained from the reaction of monohydrazides of 2-R-methyl-4-cyclohexen-1,1-dicarboxylic acids and hydrazides of 2-R-4-methyl-4-cyclohexen-1-monocarboxylic acids with acetylacetone and dibenzoylmethane. The conditions for the formation of the pyrazoles depend on the nature of the substituents in the hydrazide starting materials and the structure of the 1,3-diketone used. 相似文献
6.
1,2-邻苯二氧基二乙酸铕及掺杂L(L=La,Y,Yb,Nd)配合物的合成及荧光性质研究 总被引:1,自引:0,他引:1
在乙醇体系中,以氯化铕与1,2邻苯二氧基二乙酸和二苯甲酰甲烷反应合成了三元配合物Eu-BDDA-DBM以及弱荧光离子La3+,Y3-,Yb3-和Nd3+掺杂的铕配合物.通过红外、紫外-可见、热重、荧光光谱对配合物进行了表征.红外光谱表明,单一配合物和掺杂配合物具有相似的配位结构.荧光光谱表明,La3+和Nd3+离子掺杂可以大幅度提高的铕配合物的荧光强度,其中La3+掺杂荧光强度增强最明显. 相似文献
7.
Li Song Junke Yu Kuanjun Fang Furui Shi Wenming Wan Longyun Hao Zhihui Zhao Dr. Weichao Chen Yanzhi Xia 《Chemphyschem》2022,23(9):e202100888
In this work, a novel organomagnesium complex with outstanding aggregation induced emission (AIE) properties is synthesized using dibenzoylmethane (DBM) as the ligand. The structure of the complex is confirmed to be one magnesium ion coordinated to the dione groups of two DBM molecules, and the magnesium ion adopts a distorted octahedrally geometry. The obvious emission is found for Mg(DBM)2 powder and not in the solution, making this the first reported organomagnesium complex with AIE property. The properties of the complex were investigated by using UV-vis absorption and fluorescence emission spectroscopy, cyclic voltammetry, and density functional theory calculations. Moreover, the Mg(DBM)2 solution dispersed in filter paper was is colorless, which may be made into a convenient anti-counterfeiting and encryption tool. Mg(DBM)2/alginate fibers were prepared by wet-spinning process and further processed into paper, which can be used in the fields of sensors, anti-counterfeiting, and encryption. Sweat contains a wealth of chemical information that could potentially indicate the body's deeper biomolecular state. The prepared fluorescent fibers were used to detect sweat due to its non-toxic, low-cost efficient and fast response to analytes. 相似文献
8.
Fabio Marchetti Claudio Pettinari Riccardo Pettinari 《Coordination chemistry reviews》2005,249(24):2909-2945
This review summarizes the literature on 4-acyl-5-pyrazolone ligands, their synthesis, characterization and coordination chemistry toward main group, transition, lanthanide and actinide metals and relevant applications of their metal complexes. 相似文献
9.
S. A. Yamashkin E. A. Oreshkina I. S. Romanova M. A. Yurovskaya 《Chemistry of Heterocyclic Compounds》2005,41(10):1280-1289
The comparative reactivities of 6-amino-1,2,3-trimethyl- and 6-amino-7-methoxy-2,3-dimethylindoles with acetylacetone, dibenzoylmethane,
and with aceto- and trifluoroacetoacetic esters have been studied. Methods have been developed for the preparation of some
functionally substituted pyrrolo-[3,2-g]quinolines.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 10, pp. 1529–1539, October, 2005. 相似文献
10.
Electroluminescent properties of three ternary europium complexes with different phenanthroline derivatives 总被引:2,自引:0,他引:2
BIAN Zuqiang GAO Deqing GUAN Min XIN Hao LI Fuyou HUANG Chunhui WANG Kezhi & JIN Linpei . State Key Laboratory of Rare Earth Materials Chemistry Applications Peking University Beijing China . Department of Chemistry Beijing Normal University Beijing China 《中国科学B辑(英文版)》2004,47(4):326-334
In the past decade a number of lanthanide com-plexes have been designed and synthesized for organic electroluminescent (EL) devices owing to their ex-tremely sharp emission bands and potentially high internal quantum efficiency[113]. This characteristic made the lanthanide complexes one kind of promising candidates for full color flat-panel displays which re-quire pure red, green and blue emissions. So far, how-ever, the devices based on lanthanide complexes as emitters have not demonstrated v… 相似文献