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789 Aktuelle Fachpublikationen zum Thema temperature

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Anion‐Directed Copper(II) Metallocages, Coordination Chain, and Complex Double Salt: Structures, Magnetic Properties, EPR Spectra, and Density Functional Study

15.04.2016 | Jing‐Yun Wu, Ming‐Shiou Zhong, Ming‐Hsi Chiang, Dibyendu Bhattacharya, Yen‐Wei Lee, Long‐Li Lai, Chemistry - A European Journal, 2016

Abstract A series of CuII metallo‐assemblies showing anion‐directed structural variations, including five metallocages [(Gn−)⊂{Cu2(Hdpma)4}](8−n)+(A−)8−n (Gn−=NO3−, ClO4−, SiF62−, BF4−, SO42−; A−=NO3−, ClO4−, BF4−, CH3SO4−; Hdpma=bis(3‐pyridylmethyl)ammonium cation), a complex double salt, ...

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Coexistence of Three Ferroic Orders in the Multiferroic Compound [(CH3)4N][Mn(N3)3] with Perovskite‐Like Structure

13.04.2016 | L. Claudia Gómez‐Aguirre, Breogán Pato‐Doldán, Alessandro Stroppa, Li‐Ming Yang, Thomas Frauenheim, Jorge Mira, Susa ..., Chemistry - A European Journal, 2016

Abstract The perovskite azido compound [(CH3)4N][Mn(N3)3], which undergoes a first‐order phase change at Tt=310 K with an associated magnetic bistability, was revisited in the search for additional ferroic orders. The driving force for such structural transition is multifold and involves a ...

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Early–Late Heterometallic Complexes of Gold and Zirconium: Photoluminescence and Reactivity

08.04.2016 | Sebastian Bestgen, Christoph Schoo, Christina Zovko, Ralf Köppe, Rory P. Kelly, Sergei Lebedkin, Manfred M. Kappes, ..., Chemistry - A European Journal, 2016

Abstract OH functionalized triarylphosphines were used to assemble zirconocene‐based metalloligands with phosphine donor sites in varying positions. These complexes were subsequently treated with different gold precursors to obtain early–late heterometallic compounds in which the metal atoms ...

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Template‐Engaged Solid‐State Synthesis of Barium Magnesium Silicate Yolk@Shell Particles and Their High Photoluminescence Efficiency

05.04.2016 | Xuncai Chen, Woo‐Sik Kim, Chemistry - A European Journal, 2016

Abstract This study presents a new synthetic method for fabricating yolk@shell‐structured barium magnesium silicate (BMS) particles through a template‐engaged solid‐state reaction. First, as the core template, (BaMg)CO3 spherical particles were prepared based on the coprecipitation of Ba2+ and ...

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Naphthalene‐Functionalized, Photoluminescent Room Temperature Ionic Liquids Bearing Small Counterions

24.03.2016 | Hongxia Zhu, Geping Zhang, Mengjun Chen, Shengju Zhou, Guihua Li, Xiaolin Wang, Qingzeng Zhu, Hongguang Li, Jingchen ..., Chemistry - A European Journal, 2016

π‐Conjugated room temperature ionic liquids (RTILs) with small counterions (Br‐ ) can be facilely synthesized through attaching branched alkyl chains to the cationic backbone of the target compounds. This ingenious design provides an effective method to tune inter‐ and intramolecular ...

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A Thermo‐ and Photo‐Switchable Ruthenium Initiator For Olefin Metathesis

23.03.2016 | Volodymyr Sashuk, Oksana Danylyuk, Chemistry - A European Journal, 2016

Abstract A ruthenium carbene complex bearing azobenzene functionality is reported. The complex exists in the form of two isomers differing by the size of the chelate ring. Both isomers were isolated by applying kinetic or thermodynamic control during the synthesis and characterized by X‐ray ...

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Why Does the Intramolecular Trimethylene‐Bridged Frustrated Lewis Pair Mes2PCH2CH2CH2B(C6F5)2 Not Activate Dihydrogen?

21.03.2016 | Thomas Özgün, Ke‐Yin Ye, Constantin G. Daniliuc, Birgit Wibbeling, Lei Liu, Stefan Grimme, Gerald Kehr, Gerhard Erker, Chemistry - A European Journal, 2016

Abstract The methyl labelled C3‐bridged frustrated phosphane borane Lewis pair (P/B FLP) 2 b was prepared by treatment of Mes2PCl with a methallyl Grignard reagent followed by anti‐Markovnikov hydroboration with Piers’ borane [HB(C6F5)2)]. The FLP 2 b is inactive toward dihydrogen under ...

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Two‐Dimensional Hollow TiO2 Nanoplates with Enhanced Photocatalytic Activity

21.03.2016 | Chuang Song, Lanfang Wang, Feng Gao, Qingyi Lu, Chemistry - A European Journal, 2016

Abstract Two‐dimensional anatase TiO2 hollow nanoplates were firstly synthesized through a facile synthesis route by using α‐Fe2O3 nanoplates as removable templates. Two‐dimensional hollow TiO2 nanoplates with different ratios of anatase and rutile phases were obtained by adjusting the ...

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Nanoparticle Capping Agent Controlled Electron‐Transfer Dynamics in Ionic Liquids

21.03.2016 | Eden E. L. Tanner, Christopher Batchelor‐McAuley, Richard G. Compton, Chemistry - A European Journal, 2016

Abstract Herein, we report a change in the mechanism of the oxidation of silver nanoparticles (Ag NPs) with the molecular weight of a poly(ethylene) glycol (PEG) capping agent. Characterisation of the modified nanoparticles is undertaken using dynamic light scattering and UV/Vis spectroscopy. ...

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White Light Emissive DyIII Single‐Molecule Magnets Sensitized by Diamagnetic [CoIII(CN)6]3‐ Linkers

18.03.2016 | Shin-Ichi Ohkoshi, Szymon Chorazy, Michał Rams, Koji Nakabayashi, Barbara Sieklucka, Chemistry - A European Journal, 2016

The self‐assembly of DyIII ‐ 3‐hydroxypyridine (3‐OHpy) complexes with hexacyanidocobaltate(III) anions in water produces cyanido‐bridged {[DyIII(3‐OHpy)2(H2O)4] [CoIII(CN)6]}∙H2O (1) chains. They reveal a Single‐Molecule Magnet (SMM) behavior with large zero dc field energy barrier, ΔE = ...

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