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Control of Reversible Activation Dynamics of [Ru(η⁶:κ¹‐C₆H₅(C₆H₄)NH₂)(XY)]n+ and the Effect of Chelate Ligand Variation

22-Jul-2017 | Francisco Martínez-Peña, Ana M Pizarro, Chemistry - A European Journal, 2017

The potential use of organometallic ruthenium complexes as anticancer drugs is well known. Here we show a family of activatable tethered ruthenium(II) arene complexes of general formula [Ru(η⁶:κ¹‐C₆H₅(C₆H₄)NH₂)(XY)]n+ (closed tether‐ring) bearing different chelating XY ligands (XY = aliphatic ...


Reversible pressure‐controlled depolymerization of a copper(II)‐containing coordination polymer

21-Jul-2017 | Jack Kay Clegg, Aidan Brock, Katrina Jolliffe, Simon Parsons, Leonard Lindoy, Peter Tasker, Fraser White, Chemistry - A European Journal, 2017

A unique pressure‐induced Cu‐N bond breaking/bond forming reaction is reported. The variation of pressure on a single crystal of a one‐dimensional copper(II)‐containing coordination polymer (Cu2L2(1‐methylpiperazine)2]n, where H2L is 1,1'‐(1,3‐phenylene)‐bis(4,4‐dimethylpentane‐1,3‐dione)), was ...


Structural Insights for the Borates with Anion‐templated Open‐Framework Configuration: Asymmetric K2BaB16O26 vs Centrosymmetric K3CsB20O32 and Na2M2NB18O30 (M = Rb, Cs; N = Ba, Pb)

21-Jul-2017 | Miriding Mutailipu, Min Zhang, Xin Su, Zhihua Yang, Yanna Chen, Shilie Pan, Chemistry - A European Journal, 2017

Five new mixed‐metal borates, namely, K2BaB16O26, K3CsB20O32, Na2Cs2BaB18O30, Na2Rb2PbB18O30, and Na2Cs2PbB18O30 were synthesized using the high‐temperature solution method. Those structures were characterized by single‐crystal X‐ray diffraction, and the B‐O configurations of them are shown to ...


Vanadium Hydroxide Cluster Ions in the Gas Phase: Bond‐Forming Reactions of Doubly‐Charged Negative Ions by SO2‐Promoted V−O Activation

21-Jul-2017 | Anna Troiani, Marzio Rosi, Stefania Garzoli, Chiara Salvitti, Giulia de Petris, Chemistry - A European Journal, 2017

Doubly‐charged vanadium cluster anions undergo fast and efficient bond‐forming reactions, producing singly‐charged products. The charge separation process does not occur by exothermic electron transfer or fragmentation, but by reaction with sulfur dioxide, which promotes the breakage of strong ...


Tailored band gaps in sulphur and nitrogen containing porous donor‐acceptor polymers (SNPs)

20-Jul-2017 | Dana Schwarz, Yaroslav S. Kochergin, Amitava Acharja, Arun Ichangi, Maksym V. Opanasenko, Jiří Čejka, Uwe Lappan, ..., Chemistry - A European Journal, 2017

Donor‐acceptor dyads hold the key to tuning of electrochemical properties and enhanced mobility of charge carriers, yet their incorporation into a heterogeneous polymer network proves difficulty due to the fundamentally different chemistry of the donor‐ and acceptor‐subunits. We present a family ...


Total synthesis of the marine natural product hemiasterlin via organocatalyzed α‐hydrazination

20-Jul-2017 | Thomas Lindel, Jan Hendrik Lang, Peter G. Jones, Chemistry - A European Journal, 2017

An efficient synthesis of the potently cytotoxic marine peptide hemiasterlin is presented. The tetramethyltryptophan moiety is assembled via tert.‐prenylation of indole, followed by the high‐yielding, organocatalyzed α‐hydrazination of a sterically congested aldehyde with excellent ...


N‐Heterocyclic Phosphenium Complex of Manganese: Synthesis and Catalytic Activity in Ammonia Borane Dehydrogenation

20-Jul-2017 | M. Gediga, C. M. Feil, S. H. Schlindwein, J. Bender, M. Nieger, D. Gudat, Chemistry - A European Journal, 2017

Subsequent reactions of a neutral phosphenium complex of Mn with H− and H+ sources resulted in a stoichiometric H2 addition to the Mn=P double bond, which can be reversed upon thermal or photochemical excitation. In contrast, in the reaction with NH3BH3, the same complex acted as ...


Iodine‐promoted Semmler‐Wolff reactions: step economic access to meta‐substituted primary anilines via aromatization

20-Jul-2017 | Shi-Ke Wang, Xia You, Da-Yuan Zhao, Neng-Jie Mou, Qun-Li Luo, Chemistry - A European Journal, 2017

An atom and step economic access to unprotected meta‐substituted primary anilines was disclosed via the Semmler‐Wolff reaction promoted by molecular iodine, in which noble metal catalysts and inert atmosphere are unnecessary while the forcing reaction conditions and the lengthy synthesis can be ...


Synthetic Analogs of Nitrogenase Metallocofactors: Challenges and Developments

20-Jul-2017 | Nathaniel Sickerman, Kazuki Tanifuji, Yilin Hu, Markus Walter Ribbe, Chemistry - A European Journal, 2017

Nitrogenase is the only known biological system capable of reducing N2 to NH3, which is a critical component of bioavailable nitrogen fixation. Since the discovery of discrete iron‐sulfur metalloclusters within the nitrogenase MoFe protein, synthetic inorganic chemists have sought to reproduce ...


N/S co‐doped 3D porous carbon nanosheet networks enhancing anode performance of sodium ion batteries

19-Jul-2017 | Lei Zou, Yanqing Lai, Hongxing Hu, Mengran Wang, Kai Zhang, Peng Zhang, Jing Fang, Jie Li, Chemistry - A European Journal, 2017

A facile and scalable method has been realized for the in‐situ synthesis of N/S co‐doping 3D porous carbon nanosheet networks (NSPCNN) as sodium‐ion battery anode material. During the synthesis, NaCl is used for a template to prepare porous carbon nanosheet networks. In the resultant ...


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