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677 Aktuelle Fachpublikationen zum Thema temperature

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Di‐tert‐Butyl Peroxide‐Mediated Atom‐Transfer Radical Addition of 2‐Chlorodithiane to Aryl Alkynes under Mild Conditions

21.08.2015 | Junshan Lai, Lixia Tian, Yongping Liang, Yuan Zhang, Xingang Xie, Bowen Fang, Shouchu Tang, Chemistry - A European Journal, 2015

Abstract Atom transfer radical addition (ATRA) of 2‐chlorodithiane onto aryl alkynes through the use of di‐tert‐butyl peroxide as an oxidant at room temperature directly affords a variety of synthetically valuable β‐chloro‐(Z)‐vinyl dithianes in good yields with high regioselectivities and ...


A Tale of Copper Coordination Frameworks: Controlled Single‐Crystal‐to‐Single‐Crystal Transformations and Their Catalytic CH Bond Activation Properties

21.08.2015 | Yifa Chen, Xiao Feng, Xianqiang Huang, Zhengguo Lin, Xiaokun Pei, Siqing Li, Jikun Li, Shan Wang, Rui Li, Bo Wang, Chemistry - A European Journal, 2015

Abstract Metal–organic frameworks (MOFs), as a class of microporous materials with well‐defined channels and rich functionalities, hold great promise for various applications. Yet the formation and crystallization processes of various MOFs with distinct topology, connectivity, and properties ...


Highly Dynamic Coordination Behavior of Pn Ligand Complexes towards “Naked” Cu+ Cations

20.08.2015 | Martin Fleischmann, Stefan Welsch, Eugenia V. Peresypkina, Alexander V. Virovets, Manfred Scheer, Chemistry - A European Journal, 2015

Abstract Reactions of Cu+ containing the weakly coordinating anion [Al{OC(CF3)3}4]− with the polyphosphorus complexes [{CpMo(CO)2}2(μ,η2:η2‐P2)] (A), [CpM(CO)2(η3‐P3)] (M=Cr(B1), Mo (B2)), and [Cp*Fe(η5‐P5)] (C) are presented. The X‐ray structures of the products revealed mononuclear (4) and ...


Ruthenium‐Catalyzed Oxidant‐Free Allylation of Aromatic Ketoximes with Allylic Acetates at Room Temperature

19.08.2015 | Rajendran Manikandan, Padmaja Madasamy, Masilamani Jeganmohan, Chemistry - A European Journal, 2015

Abstract Substituted aromatic ketoximes reacted efficiently with allylic acetates in the presence of {[RuCl2(p‐cymene)]2} and AgSbF6 in 1,2‐dichloroethane at ambient temperature, providing ortho‐allyl aromatic ketoximes in a highly regioselective manner without an oxidant. In the reaction, the ...


Enhanced Hydrogen Generation from Formic Acid by Half‐Sandwich Iridium(III) Complexes with Metal/NH Bifunctionality: A Pronounced Switch from Transfer Hydrogenation

13.08.2015 | Asuka Matsunami, Yoshihito Kayaki, Takao Ikariya, Chemistry - A European Journal, 2015

Abstract By switching the catalytic function from transfer hydrogenation based on the metal/NH bifunctionality, facile dehydrogenation of formic acid was achieved by amido‐ and hydrido(amine)–Ir complexes derived from N‐triflyl‐1,2‐diphenylethylenediamine (TfDPEN) at ambient temperature even ...


Ligand π‐Radical Interaction with f‐Shell Unpaired Electrons in Phthalocyaninato–Lanthanoid Single‐Molecule Magnets: A Solution NMR Spectroscopic and DFT Study

13.08.2015 | Marko Damjanović, Takaumi Morita, Keiichi Katoh, Masahiro Yamashita, Markus Enders, Chemistry - A European Journal, 2015

Abstract The phthalocyaninato double‐decker complexes [M(obPc)2]0 (M= YIII, TbIII, DyIII; obPc=2,3,9,10,16,17,23,24‐octabutoxyphthalocyaninato), along with their reduced ([M(obPc)2]−[P(Ph)4]+; M=TbIII, DyIII) and oxidized ([M(obPc)2]+[SbCl6]− (M=YIII, TbIII) counterparts were studied with 1H, ...


Proton‐Conducting Magnetic Coordination Polymers

13.08.2015 | Soumava Biswas, Himanshu Sekhar Jena, Suresh Sanda, Sanjit Konar, Chemistry - A European Journal, 2015

Abstract Three isostructural lanthanide‐based two‐dimensional coordination polymers (CPs) {[Ln2(L)3(H2O)2]n⋅2n CH3OH)⋅2n H2O} (Ln=Gd3+ (1), Tb3+ (2), Dy3+ (3); H2L=cyclobutane‐1,1‐dicarboxylic acid) were synthesized by using a low molecular weight dicarboxylate ligand and characterized. ...


Structural Characterisation of Complex Layered Double Hydroxides and TGA‐GC‐MS Study on Thermal Response and Carbonate Contamination in Nitrate‐ and Organic‐Exchanged Hydrotalcites

13.08.2015 | Eleonora Conterosito, Luca Palin, Diego Antonioli, Davide Viterbo, Enrico Mugnaioli , Ute Kolb, Luana Perioli, Marco ..., Chemistry - A European Journal, 2015

Abstract Layered double hydroxides (LDHs) are versatile materials used for intercalating bioactive molecules in the fields of pharmaceuticals, nutraceuticals and cosmetics, with the purpose of protecting them from degradation, enhancing their water solubility to increase bioavailability and ...


Solvatochromism, Reversible Chromism and Self‐Assembly Effects of Heteroatom‐Assisted Aggregation‐Induced Enhanced Emission (AIEE) Compounds

13.08.2015 | Caixia Niu, Ying You, Liu Zhao, Dacheng He, Na Na, Jin Ouyang, Chemistry - A European Journal, 2015

Abstract Two compounds, 9,10‐bis[2‐(quinolyl)vinyl]anthracene (BQVA) and 9,10‐bis[2‐(naphthalen‐2‐yl)vinyl]anthracene (BNVA), have been synthesised and investigated. Both of them have aggregation‐induced enhanced emission (AIEE) properties. Heteroatom‐assisted BQVA shows solvatochromism, ...


Gd‐DTPA‐Dopamine‐Bisphytanyl Amphiphile: Synthesis, Characterisation and Relaxation Parameters of the Nanoassemblies and Their Potential as MRI Contrast Agents

13.08.2015 | Abhishek Gupta, Scott A. Willis, Lynne J. Waddington, Tim Stait‐Gardner, Liliana de Campo, Dennis W. Hwang, Nigel Ki ..., Chemistry - A European Journal, 2015

Abstract Here, a new amphiphilic magnetic resonance imaging (MRI) contrast agent, a GdIII‐chelated diethylenetriaminepentaacetic acid conjugated to two branched alkyl chains via a dopamine spacer, Gd‐DTPA‐dopamine‐bisphytanyl (Gd‐DTPA‐Dop‐Phy), which is readily capable of self‐assembling into ...


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