Chem. Commun.

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Synthesis and vibrational spectroscopy of 57Fe-labeled models of [NiFe] hydrogenase: first direct observation of a nickel-iron interaction

11 October, 2014 - 11:17

Chem. Commun., 2014, 50,13469-13472
DOI: 10.1039/C4CC04572F, CommunicationDavid Schilter, Vladimir Pelmenschikov, Hongxin Wang, Florian Meier, Leland B. Gee, Yoshitaka Yoda, Martin Kaupp, Thomas B. Rauchfuss, Stephen P. Cramer
Isotopically labelled Ni57Fe models of the [NiFe] hydrogenase active site have been prepared and studied with nuclear resonant vibrational spectroscopy, enabling direct characterization of metal-metal bonding.
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Enantioselective protonation of [small alpha]-hetero carboxylic acid-derived ketene disilyl acetals under chiral ionic Bronsted acid catalysis

11 October, 2014 - 11:17

Chem. Commun., 2014, 50,13489-13491
DOI: 10.1039/C4CC06081D, CommunicationDaisuke Uraguchi, Tomohito Kizu, Yuki Ohira, Takashi Ooi
P-Spiro chiral diaminodioxaphosphonium ion discriminates the enantiofaces of [small alpha]-halo and alkoxy carboxylic acid-derived ketene disilyl acetals by the recognition of the electronic difference between two substituents of the ketene disilyl acetal in the proton-transfer event.
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Photodegradable and size-tunable single-chain nanoparticles prepared from a single main-chain coumarin-containing polymer precursor

11 October, 2014 - 11:17

Chem. Commun., 2014, 50,13492-13494
DOI: 10.1039/C4CC06629D, CommunicationWeizheng Fan, Xia Tong, Qiang Yan, Shangyi Fu, Yue Zhao
A single linear polymer precursor was used to prepare photodegradable single-chain nanoparticles of variable sizes.
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A bimodal anionic MOF: turn-off sensing of CuII and specific sensitization of EuIII

11 October, 2014 - 11:17

Chem. Commun., 2014, 50,13567-13570
DOI: 10.1039/C4CC05991C, CommunicationSohini Bhattacharyya, Anindita Chakraborty, Kolleboyina Jayaramulu, Arpan Hazra, Tapas Kumar Maji
A bimodal anionic MOF is reported which acts as a turn-off CuII sensor as well as a specific EuIII sensitizer via cation exchange.
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Diselenolodiselenole: a selenium containing fused heterocycle for conjugated systems

11 October, 2014 - 11:17

Chem. Commun., 2014, 50,13454-13456
DOI: 10.1039/C4CC05439C, CommunicationOpen Access Open Access Creative Commons Licence&nbsp This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.Anjan Bedi, Sashi Debnath, Sanjio S. Zade
Diselenolodiselenole (C4Se4) derivatives are synthesized for the first time by heating substituted diaryl diynes with elemental selenium. The optical, electrochemical and structural properties of C4Se4-derivatives are tuned by varying end-capping aromatic substituents.
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Reversibly tunable helix inversion in supramolecular gels trigged by Co2+

11 October, 2014 - 11:17

Chem. Commun., 2014, 50,13495-13498
DOI: 10.1039/C4CC05699J, CommunicationSo Hyeon Park, Sung Ho Jung, Junho Ahn, Ji Ha Lee, Ki-Young Kwon, Jiwon Jeon, Hyungjun Kim, Justyn Jaworski, Jong Hwa Jung
Terpyridine-based ligands form octahedral complexes with Co2+ at low cation concentrations to form helical assemblies which provide a supramolecular gel framework.
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A nickel dimethyl glyoximato complex to form nickel based nanoparticles for electrocatalytic H2 production

11 October, 2014 - 11:17

Chem. Commun., 2014, 50,13514-13516
DOI: 10.1039/C4CC05355A, CommunicationStephanie Cherdo, Sanae El Ghachtouli, Marie Sircoglou, Francois Brisset, Maylis Orio, Ally Aukauloo
Mechanistic insights into the electrochemical alteration of NiII(DMGBF2)2 into Ni-based nanoparticles showing electrocatalytic HER activity are provided based on experimental and theoretical studies.
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N-Methylation of amine and nitro compounds with CO2/H2 catalyzed by Pd/CuZrOx under mild reaction conditions

11 October, 2014 - 11:17

Chem. Commun., 2014, 50,13521-13524
DOI: 10.1039/C4CC05119J, CommunicationXinjiang Cui, Yan Zhang, Youquan Deng, Feng Shi
N-Methylation of amine/nitrobenzene with CO2/H2 can be realized with up to 97% yield under mild reaction conditions catalyzed by Pd/CuZrOx.
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Thermodynamics of halogen bonded monolayer self-assembly at the liquid-solid interface

11 October, 2014 - 11:17

Chem. Commun., 2014, 50,13465-13468
DOI: 10.1039/C4CC06251E, CommunicationW. Song, N. Martsinovich, W. M. Heckl, M. Lackinger
The overall enthalpy change associated with hexabromotriphenylene monolayer self-assembly at the heptanoic acid-graphite interface was assessed by an adapted Born-Haber cycle.
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Area negative thermal expansion in a beryllium borate LiBeBO3 with edge sharing tetrahedra

11 October, 2014 - 11:17

Chem. Commun., 2014, 50,13499-13501
DOI: 10.1039/C4CC04879B, CommunicationWenjiao Yao, Xingxing Jiang, Rongjin Huang, Wei Li, Chuanjun Huang, Zheshuai Lin, Laifeng Li, Chuangtian Chen
A very rare area negative thermal expansion phenomenon is observed in LiBeBO3, attributed to its abnormal structural features.
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Substrate-induced effects in thin films of a potential magnet composed of metal-free organic radicals deposited on Si(111)

11 October, 2014 - 11:17

Chem. Commun., 2014, 50,13510-13513
DOI: 10.1039/C4CC05990E, CommunicationA. Caneschi, M. B. Casu
A derivative of the nitronyl-nitroxide radical shows homogenous growth on Si(111); under X-rays the nitronyl-nitroxide switches to the imino-nitroxide radical.
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Plasmonic biocompatible silver-gold alloyed nanoparticles

11 October, 2014 - 11:17

Chem. Commun., 2014, 50,13559-13562
DOI: 10.1039/C4CC05297H, CommunicationGeorgios A. Sotiriou, Gion Diego Etterlin, Anastasia Spyrogianni, Frank Krumeich, Jean-Christophe Leroux, Sotiris E. Pratsinis
Nanoalloying Ag with Au minimizes nanoparticle surface oxidation and subsequent toxic Ag+ ion release rendering such nanoparticles safer for theranostic applications.
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From metal-organic framework to carbon: toward controlled hierarchical pore structures via a double-template approach

11 October, 2014 - 11:17

Chem. Commun., 2014, 50,13502-13505
DOI: 10.1039/C4CC06212D, CommunicationJian-Ke Sun, Qiang Xu
For the first time, MOF-derived hierarchically porous carbons with controlled pore structures have been achieved via a double-template approach.
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Facile synthesis of 3D Pd-P nanoparticle networks with enhanced electrocatalytic performance towards formic acid electrooxidation

9 October, 2014 - 10:54

Chem. Commun., 2014, 50,13451-13453
DOI: 10.1039/C4CC03282A, CommunicationJingfang Zhang, You Xu, Bin Zhang
3D Pd-P nanoparticle networks (NNs) have been successfully synthesized using a facile one-step soft-template-assisted method. The as-prepared Pd-P NNs exhibit markedly improved activity and stability towards formic acid electrooxidation over Pd NNs, commercial Pd/C and Pd-P nanoparticle aggregates (NAs).
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A domino desulfurative coupling-acylation-hydration-Michael addition process for the synthesis of polysubstituted tetrahydro-4H-pyrido[1,2-a]pyrimidines

9 October, 2014 - 10:54

Chem. Commun., 2014, 50,13555-13558
DOI: 10.1039/C4CC05090H, CommunicationZhong-Fei Yan, Zheng-Jun Quan, Yu-Xia Da, Zhang Zhang, Xi-Cun Wang
A domino desulfurative coupling-acylation-hydration and Michael addition sequence has been established. The process involves the formation of two C-C bonds, one C-N bond and a C[double bond, length as m-dash]O double bond to produce one ring simultaneously.
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A naked-eye and ratiometric near-infrared probe for palladium via modulation of a [small pi]-conjugated system of cyanines

9 October, 2014 - 10:54

Chem. Commun., 2014, 50,13525-13528
DOI: 10.1039/C4CC05871B, CommunicationXiaohang Wang, Zhiqian Guo, Shiqin Zhu, He Tian, Weihong Zhu
The modulation of [small pi]-conjugated electrons in cyanine dyes can result in a ratiometric fluorescence change with a large Stokes shift (270 nm), especially for realizing palladium detection in aqueous samples using indicator paper and in living cells by ratiometric mode.
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Biological stability and activity of siRNA in ionic liquids

9 October, 2014 - 10:54

Chem. Commun., 2014, 50,13457-13460
DOI: 10.1039/C4CC05086J, CommunicationRomiza R. Mazid, Upulie Divisekera, Wenjuan Yang, Vijayaraghavan Ranganathan, Douglas R. MacFarlane, Christina Cortez-Jugo, Wenlong Cheng
We found that CDP IL can significantly enhance the biological stability of siRNA. More importantly siRNA in IL can still maintain high levels of gene knockdown activity.
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Facile synthesis of PdPt nanoalloys with sub-2.0 nm islands as robust electrocatalysts for methanol oxidation

9 October, 2014 - 10:54

Chem. Commun., 2014, 50,13551-13554
DOI: 10.1039/C4CC04534C, CommunicationDa-Bing Huang, Qiang Yuan, Hong-Hui Wang, Zhi-You Zhou
The high-yield, composition-tunable PdPt nanoalloys with sub-2.0 nm islands were first achieved through a facile aqueous approach.
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Enantioselective halogenative semi-pinacol rearrangement: a stereodivergent reaction on a racemic mixture

9 October, 2014 - 10:54

Chem. Commun., 2014, 50,13461-13464
DOI: 10.1039/C4CC05923A, CommunicationFedor Romanov-Michailidis, Marion Pupier, Laure Guenee, Alexandre Alexakis
The present work describes a stereodivergent reaction in the course of which an optically inactive, racemic starting material is quantitatively de-racemized with the help of an enantiomerically pure phosphate anion.
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Visible light-induced intermolecular radical addition: facile access to [gamma]-ketoesters from alkyl-bromocarboxylates and enamines

9 October, 2014 - 10:54

Chem. Commun., 2014, 50,13547-13550
DOI: 10.1039/C4CC05590J, CommunicationBei Hu, Haixia Chen, Yan Liu, Wuheng Dong, Kai Ren, Xiaomin Xie, Hao Xu, Zhaoguo Zhang
A highly efficient addition of alkyl [small alpha]-bromocarboxylates to enamines by visible light-induced photoredox catalysis is reported.
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