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Rhodium(III) cationic methyl complexes containing dimethylformamide ligand, cis-[Rh(β-diket)(PPh3)2(CH3)(DMF)][BPh4] (β-diket = acetylacetonate or benzoylacetonate), in comparison with their acetonitrile analogs

17-10-2014 | Author(s): Elizaveta P. Shestakova , Yuri S. Varshavsky , Victor N. Khrustalev , Galina L. Starova , Sergei N. ..., Journal of Organometallic Chemistry, 2014

Publication date: 15 December 2014 Source:Journal of Organometallic Chemistry, Volume 774 Author(s): Elizaveta P. Shestakova , Yuri S. Varshavsky , Victor N. Khrustalev , Galina L. Starova , Sergei N. Smirnov The rhodium(III) cationic methyl complexes, ...

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Organic Mixed Valency in Quadruple Hydrogen-bonded Triarylamine Dimers Bearing Ureido Pyrimidinedione Moieties

15-10-2014 | Keishiro Tahara; Tetsufumi Nakakita; Shohei Katao; Jun-ichi Kikuchi, Chemical Communication, 2014

Triarylamine derivatives bearing an ureido pyrimidinedione moiety were synthesised and formed dimers in the solid state and solution through quadruple hydrogen-bonds. These bonding interactions stabilized the mixed-valence states of the tri-arylamine dimers without any electronic coupling between ...

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A Molecular Copper Catalyst for Electrochemical Water Reduction with a Large Hydrogen‐Generation Rate Constant in Aqueous Solution

14-10-2014 | Peili Zhang, Mei Wang, Yong Yang, Tianyi Yao, Licheng Sun, Angewandte Chemie International Edition, 2014

Abstract The copper complex [(bztpen)Cu](BF4)2 (bztpen=N‐benzyl‐N,N′,N′‐tris(pyridin‐2‐ylmethyl)ethylenediamine) displays high catalytic activity for electrochemical proton reduction in acidic aqueous solutions, with a calculated hydrogen‐generation rate constant (kobs) of over 10000 s−1. A ...

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Natural α-Amino Acid-Functionalized Poly(phenyleneethynylene)s (PPEs): Synthesis and Chiroptical Characterization of Aggregate States

14-10-2014 | Claudio Resta; Gennaro Pescitelli; Lorenzo Di Bari, Macromolecules, 2014

The synthesis of several novel poly(phenyleneethynylene)s (PPEs) functionalized with different natural α-amino acids methyl esters has been achieved through Cassar–Heck–Sonogashira reaction. Five different derivatives have been prepared varying the nature of the amino acid (Gly, Leu, N-methyl ...

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Synthesis of soy protein-lignin nanofibers by solution electrospinning

12-10-2014 | Author(s): Carlos Salas , Mariko Ago , Lucian A. Lucia , Orlando J. Rojas, Reactive and Functional Polymers, 2014

Publication date: Available online 2 October 2014 Source:Reactive and Functional Polymers Author(s): Carlos Salas , Mariko Ago , Lucian A. Lucia , Orlando J. Rojas Nanofibers were produced by electrospinning aqueous alkaline solutions containing different mass ratios of soy protein and ...

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Syntheses, crystal structures and antioxidant study of Zn(II) complexes with morin-5′-sulfonic acid (MSA)

12-10-2014 | Author(s): Elżbieta Pieniążek , Jan Kalembkiewicz , Maciej Dranka , Elżbieta Woźnicka, Journal of Inorganic Biochemistry, 2014

Publication date: December 2014 Source:Journal of Inorganic Biochemistry, Volume 141 Author(s): Elżbieta Pieniążek , Jan Kalembkiewicz , Maciej Dranka , Elżbieta Woźnicka The study of modified synthetic procedure of water soluble morin-5′-sulfonic acid sodium salt (NaMSA) involving less ...

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Structural, spectroscopic and computational studies of the 2:1 complex of nipecotic acid with squaric acid

12-10-2014 | Author(s): Elżbieta Bartoszak-Adamska , Zofia Dega-Szafran , Anna Komasa , Mirosław Szafran, Chemical Physics, 2014

Publication date: 24 November 2014 Source:Chemical Physics, Volume 444 Author(s): Elżbieta Bartoszak-Adamska , Zofia Dega-Szafran , Anna Komasa , Mirosław Szafran The 2:1 centrosymmetric complex of protonated (R) and (S)-nipecotic acids (piperidinium-3-carboxylic acid) with the squarate ...

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Hydrogen-Bonded Organic Semiconductor Micro- And Nanocrystals: From Colloidal Syntheses to (Opto-)Electronic Devices

10-10-2014 | Mykhailo Sytnyk; Eric Daniel Głowacki; Sergii Yakunin; Gundula Voss; Wolfgang Schöfberger; Dominik Kriegner; Julian ..., Journal of the American Chemical Society, 2014

Organic pigments such as indigos, quinacridones, and phthalocyanines are widely produced industrially as colorants for everyday products as various as cosmetics and printing inks. Herein we introduce a general procedure to transform commercially available insoluble microcrystalline pigment ...

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Hydrido{(acylphosphine)(diphenylphosphinous acid)}rhodium(III) Complexes. Catalysts for the Homogeneous Hydrolysis of Ammonia- or Amine-Boranes under Air

10-10-2014 | Virginia San Nacianceno; Lourdes Ibarlucea; Claudio Mendicute-Fierro; Antonio Rodríguez-Diéguez; José M. Seco; Itzia ..., Organometallics, 2014

The reaction of [RhCl(COD)]2 (COD = 1,5-cyclooctadiene) with PPh2(o-C6H4CHO) (Rh/P = 1:1) in the presence of 4-methylpyridine (4-pic) or isoquinoline (iquin) leads to hydridoacyl complexes [RhHCl(PPh2(o-C6H4CO))L2] (L = 4-pic, 1; iquin, 2). Their reaction with diphenylphosphine oxide affords ...

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Conformational Change of Bovine Serum Albumin Molecules at Neutral pH in Ultra-Diluted Aqueous Solutions

10-10-2014 | Shulian He; Mei Huang; Wei Ye; Dechao Chen; Shuai He; Liping Ding; Yunjin Yao; Lei Wan; Jinzhang Xu; Shiding Miao, Journal of Physical Chemistry B, 2014

Surface chemical and electrochemical techniques were applied to reveal the unfolding of bovine serum albumin (BSA) molecules induced by concentrations in aqueous solution. Real-time surface pressures vs time (π–t) kinetic curves were recorded over an aqueous subphase (190 mL) by spreading BSA ...

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