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561 Aktuelle Fachpublikationen zum Thema temperature

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Strongly Phosphorescent Neutral Rhenium(I) Isocyanoborato Complexes: Synthesis, Characterization, and Photophysical, Electrochemical, and Computational Studies

11.12.2014 | Wing‐Kin Chu, Xi‐Guang Wei, Shek‐Man Yiu, Chi‐Chiu Ko, Kai‐Chung Lau, Chemistry - A European Journal, 2014

Abstract A new series of neutral isocyanoborato rhenium(I) diimine complexes [Re(CO)3(N^N)(CNBR3)], where N^N=bpy, 4,4′‐Me2bpy, phen, 4,7‐Me2phen, 2,9‐Me2phen, 3,4,7,8‐Me4phen; R=C6F5, C6H5, Cl, 4‐ClC6H4, 3,5‐(CF3)2C6H3, with various isocyanoborate and diimine ligands of diverse electronic and ...

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Synthesis and Characterization of 5‐Cyanotetrazolide‐Based Ionic Liquids

11.12.2014 | Timm Bergholz, Benjamin Oelkers, Benedikt Huber, Bernhard Roling, Jörg Sundermeyer, Chemistry - A European Journal, 2014

Abstract New salts based on imidazolium, pyrrolidinium, phosphonium, guanidinium, and ammonium cations together with the 5‐cyanotetrazolide anion [C2N5]− are reported. Depending on the nature of cation–anion interactions, characterized by XRD, the ionic liquids (ILs) have a low viscosity and ...

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Hydrothermal Synthesis, Structure, and Optical Properties of Two Nanosized Ln26@CO3 (Ln=Dy and Tb) Cluster‐Based Lanthanide–Transition‐Metal–Organic Frameworks (Ln MOFs)

08.12.2014 | Yu Zhang, Lian Huang, Hao Miao, Hong Xiang Wan, Hua Mei, Ying Liu, Yan Xu, Chemistry - A European Journal, 2014

Abstract Two Ln26@CO3 (Ln=Dy and Tb) cluster‐based lanthanide–transition‐metal–organic frameworks (Ln MOFs) formulated as [Dy26Cu3(Nic)24(CH3COO)8(CO3)11(OH)26(H2O)14]Cl ⋅3 H2O (1; HNic=nicotinic acid) and [Tb26NaAg3(Nic)27(CH3COO)6(CO3)11(OH)26Cl(H2O)15]⋅7.5 H2O (2) have been successfully ...

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The Formation of High‐Order Polybromides in a Room‐Temperature Ionic Liquid: From Monoanions ([Br5]− to [Br11]−) to the Isolation of [PC16H36]2[Br24] as Determined by van der Waals Bonding Radii

08.12.2014 | Max E. Easton, Antony J. Ward, Toby Hudson, Peter Turner, Anthony F. Masters, Thomas Maschmeyer, Chemistry - A European Journal, 2014

Abstract An unprecedented diversity of high‐order bromine catenates (anionic polybromides) was generated in a tetraalkylphosphonium‐based room temperature ionic liquid system. Raman spectroscopy was used to identify polybromide monoanions ranging from [Br5]− to [Br11]− in the bulk solution, ...

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Peptoid‐Ligated Pentadecanuclear Yttrium and Dysprosium Hydroxy Clusters

05.12.2014 | Dominique T. Thielemann, Anna T. Wagner, Yanhua Lan, Pascual Oña‐Burgos, Ignacio Fernández , Esther S. Rösch , Domin ..., Chemistry - A European Journal, 2014

Abstract A new family of pentadecanuclear coordination cluster compounds (from now on simply referred to as clusters) [{Ln15(OH)20(PepCO2)10(DBM)10Cl}Cl4] (PepCO2=2‐[{3‐(((tert‐butoxycarbonyl)amino)methyl)benzyl}amino]acetate, DBM=dibenzoylmethanide) with Ln=Y and Dy was obtained by using the ...

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Spin Frustration in a Family of Pillared Kagomé Layers of High‐Spin Cobalt(II) Ions

05.12.2014 | Long‐Fei Wang, Cui‐Jin Li, Yan‐Cong Chen, Ze‐Min Zhang, Jiang Liu, Wei‐Quan Lin, Yan Meng, Quan‐Wen Li, Ming‐Liang Tong, Chemistry - A European Journal, 2014

Abstract Based on the analogous kagomé [Co3(imda)2] layers (imda=imidazole‐4,5‐dicarboxylate), a family of pillar‐layered frameworks with the formula of [Co3(imda)2(L)3]⋅(L)n⋅xH2O (1: L=pyrazine, n=0, x=8; 2: L=4,4′‐bipyridine, n=1, x=8; 3: L=1,4‐di(pyridin‐4‐yl)benzene, n=1, x=13; 4: ...

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Frontispiece: A Rare Tetranuclear Thorium(IV) μ4‐Oxo Cluster and Dinuclear Thorium(IV) Complex Assembled by Carbon–Oxygen Bond Activation of 1,2‐Dimethoxyethane (DME)

05.12.2014 | Nicholas E. Travia, Brian L. Scott, Jaqueline L. Kiplinger, Chemistry - A European Journal, 2014

Thorium Iodide—Running with Scissors 1,2‐Dimethoxyethane (DME) is normally a robust ligand for actinide chemistry and the isolation of well‐defined oxo and alkoxide complexes resulting from actinide‐mediated activation of DME is rare. In their Communication on page 16846 ff., J. L. Kiplinger ...

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Chemoselective Chromium(II)‐Catalyzed Cross‐Coupling Reactions of Dichlorinated Heteroaromatics with Functionalized Aryl Grignard Reagents

02.12.2014 | Andreas K. Steib, Olesya M. Kuzmina, Sarah Fernandez, Sushant Malhotra, Paul Knochel, Chemistry - A European Journal, 2014

Abstract Chromium(II) chloride catalyzes the chemoselective cross‐coupling reaction of dichloropyridines with a range of functionalized (hetero)aromatic Grignard reagents at room temperature. Functional groups, such as esters and acetals, are well tolerated in this transformation. Previously ...

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Straightforward Synthetic Protocol for the Introduction of Stabilized C Nucleophiles in the BODIPY Core for Advanced Sensing and Photonic Applications

02.12.2014 | Brenda D. Gutiérrez‐Ramos, Jorge Bañuelos, Teresa Arbeloa, Iñigo López Arbeloa, Paulina E. González‐Navarro, Kazimie ..., Chemistry - A European Journal, 2014

Abstract A straightforward synthetic protocol to directly incorporate stabilized 1,3‐dicarbonyl C nucleophiles to the meso position of BODIPY (4,4‐difluoro‐4‐bora‐3a,4a‐diaza‐s‐indacene) is reported. Soft nucleophiles generated by deprotonation of 1,3‐dicarbonyl derivatives smoothly displace ...

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Nanoscaled Copper Metal–Organic Framework (MOF) Based on Carboxylate Ligands as an Efficient Heterogeneous Catalyst for Aerobic Epoxidation of Olefins and Oxidation of Benzylic and Allylic Alcohols

27.11.2014 | Yue Qi, Yi Luan, Jie Yu, Xiong Peng, Ge Wang, Chemistry - A European Journal, 2014

Abstract Aerobic epoxidation of olefins at a mild reaction temperature has been carried out by using nanomorphology of [Cu3(BTC)2] (BTC=1,3,5‐benzenetricarboxylate) as a high‐performance catalyst through a simple synthetic strategy. An aromatic carboxylate ligand was employed to furnish a ...

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