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The crystal and molecular structures of 1,1′-divinyl-2,2′-biimidazolyl

The length of the C2-C2 bond is increased to 1.485(11) Å compared with the length of the analogous bond in unsubstituted 2,2-biimidazolyl (1.423 Å). Localization of the N=C multiple bond is observed [1.297(9) Å]. The other N-C bonds of the ring are almost equalized (1.

出版机构:Springer US

刊物名称:Russian Chemical Bulletin

出版时间:1992

ISSN:1066-5285

数据源:报刊文摘

Dicyanamido-metal(II) complexes. Part 5 † † For part 4 see ref. . : First example for a unit cell containing dinuclear and 1-D polymeric Cu(II) complexes bridging by dicyanamide

The reaction of Cu(ClO4)2, N,N,N?,N?,N?-pentamethylethylenetriamine (pmedien) and sodium dicyanamide (Nadca) in aqueous medium led to the isolation of {[Cu(pmedien)(?1,5-dca)]2(ClO4)2,[Cu(pmedien)(?1,5-dca)]n(ClO4)n} (1). The complex was structurally and magnetically characterized.

出版机构:Elsevier Science

刊物名称:Inorganic Chemistry Communications

出版时间:2010

ISSN:1387-7003

数据源:报刊文摘

Local crystal structure analysis with several picometer precision using scanning transmission electron microscopy

We report a local crystal structure analysis with a high precision of several picometers on the basis of scanning transmission electron microscopy (STEM).

出版机构:Elsevier Science

刊物名称:Ultramicroscopy

出版时间:2010

ISSN:0304-3991

数据源:报刊文摘

Phosphorus–nitrogen compounds. Part 20: Fully substituted spiro-cyclotriphosphazenic lariat (PNP-pivot) ether derivatives

The condensation reactions of partly substituted spiro-cyclotriphosphazenic lariat ethers (1 and 2) with morpholine and DASD produce fully substituted cyclotriphosphazenes (3?6) containing 11- and 14-membered macrocycles.

出版机构:Elsevier Science

刊物名称:Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy

出版时间:2010

ISSN:1386-1425

数据源:报刊文摘

Strong luminescence of novel water-soluble lanthanide complexes sensitized by pyridine-2,4,6-tricarboxylic acid

Sensitive biological analysis requires optical labels have good water solubility and excellent luminescent properties. Herein, two water-soluble lanthanide (Ln) complexes, Na6[Ln(PTA)3] (Ln=Eu and Tb), have been synthesized with a new tridentate ligand, pyridine-2,4,6-tricarboxylic acid (H3PTA).

出版机构:Elsevier Science

刊物名称:Journal of Alloys and Compounds

出版时间:2010

ISSN:0925-8388

数据源:报刊文摘

Assembly of two ferrous coordination polymers with triazole derivative: Syntheses, structures and magnetic properties

1 shows infinite plait-like chain structure, while 2 exhibits as 2D grid. Magnetic studies indicate that the Fe(II) ions in the two coordination polymers retain in high-spin ground state upon cooling from 300 to 2K, showing antiferromagnetic interactions.

出版机构:Elsevier Science

刊物名称:Inorganic Chemistry Communications

出版时间:2010

ISSN:1387-7003

数据源:报刊文摘

Two novel cadmium(II) coordination polymers based on bis-functionalized ligand 4′-(4-carboxyphenyl)-2, 2′:6′, 2″-terpyridine

Two novel cadmium(II) coordination polymers [Cd(cptpy)2] n ?nH2O (1) with a 1D double chain structure and [Cd2(cptpy)2(ox)] n ?2.5nH2O (2) with an interesting 3-connected uninodal six-fold interpenetrating ths network (Hcptpy=4?-(4-carboxyphenyl)-2,2?:6?,2?

出版机构:Elsevier Science

刊物名称:Inorganic Chemistry Communications

出版时间:2010

ISSN:1387-7003

数据源:报刊文摘

Synthesis, structure and properties of a new copper (II) complex, [Cu2(4,4′-bpy)5(H2O)4](ClO4)4(4,4′-bpy)(DMF)2(H2O)2

new copper (II) complex with formula [Cu2(4,4?-bpy)5(H2O)4](ClO4)4(4,4?-bpy)(DMF)2(H2O)2 has been synthesized by reaction of 4,4?-bpyridine (4,4?-bpy) with Cu(ClO4)2.

出版机构:Elsevier Science

刊物名称:Inorganic Chemistry Communications

出版时间:2010

ISSN:1387-7003

数据源:报刊文摘

Yeast glucoamylases: molecular-genetic and structural characterization

Glucoamylase is an extracellular enzyme produced mainly by microorganisms. It belongs to the commercially frequently exploited biocatalysts. The major application of glucoamylase is in the starch bioprocessing to produce glucose and in alcoholic fermentations of starchy materials.

出版机构:SP Versita

刊物名称:Biologia

出版时间:2010

ISSN:0006-3088

数据源:报刊文摘

Phases and phase equilibria in cobalt-rich Pr–Co–In alloys for permanent magnets

The Pr?Co?In phase equilibria related to the indium-added PrCo5 permanent magnets have been systematically studied. The 800?C isotherm and the PrCo5?PrCo2In polythermal section reveal several compounds never reported for this system.

出版机构:Elsevier Science

刊物名称:Journal of Alloys and Compounds

出版时间:2010

ISSN:0925-8388

数据源:报刊文摘