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281 Newest Publications in chemical communication

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The role of MgB12H12 in the hydrogen desorption process of Mg(BH4)2

16-12-2014 | Yigang Yan; Arndt Remhof; Daniel Rentsch; Andreas Züttel, Chemical Communication, 2014

The presence of MgB12H12 has often been considered as the major obstacle for the reversible hydrogen storage in Mg(BH4)2. This communication provides evidence that the MgB12H12 phase (or [B12H12]2− monomer) does not exist in the decomposition products of Mg(BH4)2 at temperatures ranging from 265 ...

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Diferrocenyl tosyl hydrazone with an ultrastrong NHFe hydrogen bond as double click switch

16-12-2014 | Christoph Förster; Philipp Veit; Vadim Ksenofontov; Katja Heinze, Chemical Communication, 2014

The ultrastrong and short intramolecular NH [] Fe hydrogen bond in diferrocenyl hydrazone 2 raises the barrier for intramolecular electron transfer in its mixed-valent cation 2+ and is only disrupted by double oxidation to 22+.

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Solution and solid-phase halogen and C-H hydrogen bonding to perrhenate

10-12-2014 | Casey John Massena; Asia Marie S Riel; George Francis Neuhaus; Daniel Adam Decato; Orion Berryman, Chemical Communication, 2014

1H NMR spectroscopic and X-ray crystallographic investigations of a 1,3-bis(4-ethynyl-3-iodopyridinium)benzene scaffold with perrhenate reveal strong halogen bonding in solution, and bidentate association in the solid state. A nearly isostructural host molecule demonstrates significant C–H ...

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Sulphur promoted C(sp3)–C(sp2) cross dehydrogenative cyclisation of acetophenone hydrazones with aldehydes: efficient synthesis of 3,4,5-trisubstituted 1H-pyrazoles

10-12-2014 | Rajeshwer Vanjari; Tirumaleswararao Guntreddi; Saurabh Kumar; Krishna Nand Singh, Chemical Communication, 2014

A novel strategy for the cross dehydrogenative coupling (CDC) of acetophenone hydrazones and aldehydes has been developed for the synthesis of highly substituted pyrazoles. This work, for the first time, uses elemental sulfur as a promoter as well as a hydrogen acceptor in effecting the Csp3–Csp2 ...

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Electrochemical hydrogenation of a homogeneous nickel complex to form a surface adsorbed hydrogen-evolving species

10-12-2014 | Daniel J. Martin; Brian D. McCarthy; Carrie L. Donley; Jillian L. Dempsey, Chemical Communication, 2014

A Ni(ii) complex degrades electrochemically in the presence of acid in acetonitrile to form an electrode adsorbed film that catalytically evolves hydrogen. Comparison with a similar compound permitted investigation of the degradation mechanism.

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Orchestrated photocatalytic hydrogen generation using surface-adsorbing iridium photosensitizers

26-11-2014 | Yan-Jie Wang; Gang Chang; Qingyun Chen; Guan-Jun Yang; Sheng-Qiang Fan; Baizeng Fang, Chemical Communication, 2014

Novel photosensitizers (PSs) with formyl bipyridyl ligands in different positions were developed to improve the electron transfer from an iridium complex PS to a colloidal platinum catalyst, resulting in much higher turnover numbers than the non-formyl bipyridyl Ir-PS in photocatalytic hydrogen ...

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Pt-free solar driven photoelectrochemical hydrogen fuel generation using 1T MoS2 co-catalyst assembled CdS QDs/TiO2 photoelectrode

26-11-2014 | R. Raja; P. Sudhagar; Anitha Devadoss; C. Terashima; L. K. Shrestha; K. Nakata; R. Jayavel; K. Ariga; A. Fujishima, Chemical Communication, 2014

The solar-to-hydrogen generation from the TiO2–CdS–ZnS–MoS2 (TCZM) heterointerface was demonstrated. We found that a Pt-free CdS quantum dot-sensitized TiO2 mesoporous electrode with a metallic-type 1T MoS2 co-catalyst resulted in 0.11 ml cm−2 h−1 H2 fuel generation in unassisted potential mode, ...

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Ag–Si artificial microflowers for plasmon-enhanced solar water splitting

25-11-2014 | Chih-Jung Chen; Ming-Guei Chen; Chih Kai Chen; Pin Chieh Wu; Po-Tzu Chen; Mrinmoyee Basu; Shu-Fen Hu; Din Ping Tsai; ..., Chemical Communication, 2014

We prepared Ag–Si microflowers as the photocathode for water splitting through a facile chemical method. The photocurrent and the hydrogen evolution rate of partially Ag particle decorated-Si microwires were enhanced through the synergistic effects of Ag co-catalytic and plasmonic assistance.

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The role of MgB12H12 in the hydrogen desorption process of Mg(BH4)2

18-11-2014 | Yigang Yan; Arndt Remhof; Daniel Rentsch; Andreas Zuttel, Chemical Communication, 2014

MgB12H12 has often been considered as the major obstacle for the reversible hydrogen storage in Mg(BH4)2. This communication provide evidence that MgB12H12 phase (monomers) does not exist in the decomposition products of Mg(BH4)2 at 265 to 400°C, and thereby it will not act as a dead end.

more

Orchestrated photocatalytic hydrogen generation using surface-adsorbing iridium photosensitizers

18-11-2014 | Yan-Jie Wang; Gang Chang; qingyun Chen; Guan-Jun Yang; Shengqiang Fan; Baizeng Fang, Chemical Communication, 2014

Novel photosensitizers (PS) with formyl bipyridyl ligands in different positions were developed to improve the electron transfer from an iridium complex PS to colloidal platinum catalyst, resulting in much higher turnover numbers than non-formyl bipyridyl Ir-PS in photocatalytic hydrogen ...

more

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