Química Inorgànica i Orgànica: Envíos recientes
Mostrando ítems 41-60 de 978
A three-protein charge zipper stabilizes a protein complex modulating bacterial gene silencing
The Hha/YmoA nucleoid-associated proteins help selectively silence horizontally acquired genetic material, including pathogenicity and antibiotic resistance genes and their maintenance in the absence of selective pressure. ...
Six states switching of redox-active molecular tweezers by three orthogonal stimuli
A six level molecular switch based on terpyridine(Ni-salphen)(2) tweezers and addressable by three orthogonal stimuli (metal coordination, redox reaction, and guest binding) is reported. By a metal coordination stimulus, ...
Rhodium(I) macrocyclic and cage-like structures containing diphosphine bridging ligands
Three series of rhodium organometallic complexes, mono- (1c, 2c, 5c, 6c), di- (1a-6a) and tetranuclear (1b, 5b, 6b), containing six different diphosphines (1,1'- bis(diphenylphosphino)methane or dppm (1), 1,2-bis(dipheny ...
Enantioselective Synthesis of β-Methyl Amines via Iridium-Catalyzed Asymmetric Hydrogenation of N-Sulfonyl Allyl Amines.
The iridium-catalyzed asym. hydrogenation of several N-sulfonyl allyl amines was reported. All substrates could be easily obtained by the Ir-catalyzed isomerization of N-tosylaziridines reported previously. The com. available ...
Enantioselective preparation of delta-valerolactones using horse liver alcohol dehydrogenase
Horse liver alcohol dehydrogenase (HLADH) has been found to be a versatile biocatalyst for the desymmetrization of prochiral 3‐arylpentane‐1,5‐diols, based on a two‐step one‐pot oxidation. This procedure has allowed the ...
Exploiting metallophilicity for the assembly of inorganic nanocrystals and conjugated organic molecules
The accurate engineering of interfaces between inorganic nanocrystals and semiconducting organic molecules is currently viewed as key for further developments in critical fields such as photovoltaics and photocatalysis. ...
Origin of the large dispersion of magnetic properties in nanostructured oxides: FexO/Fe3O4 nanoparticles as a case study
The intimate relationship between stoichiometry and physicochemical properties in transition-metal oxides makes them appealing as tunable materials. These features become exacerbated when dealing with nanostructures. ...
Direct and enantioselective aldol reactions catalyzed by chiral nickel(II) complexes
A direct and asymmetric aldol reaction of N-acylthiazinanethiones with aromatic aldehydes catalyzed by chiralnickel(II) complexes is reported. The reaction gives thecorresponding O-TIPS-protected anti-aldol adducts in ...
SARS-CoV-2 Inhibitors Identified by Phenotypic Analysis of a Collection of Viral RNA-Binding Molecules
Antiviral agents are needed for the treatment of SARS-CoV-2 infections and to control other coronavirus outbreaks that may occur in the future. Here we report the identification and characterization of RNA-binding compounds ...
Structural Characterization, Magnetic and Luminescent Properties of Praseodymium(III)‐4,4,4‐Trifluoro‐1‐(2‐Naphthyl)Butane‐1,3‐Dionato(1‐)Complexes
Four new Pr(III) mononuclear complexes of formula [Pr(ntfa)3(MeOH)2] (1), [Pr(ntfa)3(bipy)2] (2), [Pr(ntfa)3(4,4′-Mt2bipy)] (3) and [Pr(ntfa)3(5,5′-Me2bipy)] (4), where ntfa = 4,4,4-trifuoro-1-(naphthalen-2-yl)butane-1,3 ...
Ti-containing hybrid mesoporous organosilicas as photocatalysts for H2 production from ethanol
A series of complex organic-inorganic mesoporous materials were successfully synthesized by a microwave-assisted method that allowed the preparation of periodic mesoporous organosilicas (PMOs) with Ti (IV) forming part of ...
Exploring the computational design of anionic spin-crossover systems
In this work, a systematic study on how the ligand design in the anionic spin-crossover system [Fe(OEt-L1-pH)(NCS)3]− can be used to achieve a high degree of tuning of its transition temperature (T1/2) is presented. Our ...
Controlled 3D-coating of the pores of highly ordered mesoporous antiferromagnetic Co3O4 replicas with ferrimagnetic FexCo3-xO4 nanolayers
The controlled filling of the pores of highly ordered mesoporous antiferromagnetic Co3O4 replicas with ferrimagnetic FexCo3-xO4 nanolayers is presented as a proof-of-concept toward the integration of nanosized units in ...
Robust antiferromagnetic coupling in hard-soft bi-magnetic core/shell nanoparticles
The growing miniaturization demand of magnetic devices is fuelling the recent interest in bi-magnetic nanoparticles as ultimate small components. One of the main goals has been to reproduce practical magnetic properties ...
Supported -Complexes of LiC Bonds from Coordination of Monomeric Molecules of LiCH3, LiCH2CH3 and LiC6H5 to MoMo Bonds
LiCH3 and LiCH2CH3 react with the complex [Mo2(H)2(μ-AdDipp2)2(thf)2] (1⋅thf) with coordination of two molecules of LiCH2R (R=H, CH3) and formation of complexes [Mo2{μ-HLi(thf)CH2R}2(AdDipp2)2], 5⋅LiCH3 and 5⋅LiCH2CH3, ...
Farseer-NMR: automatic treatment, analysis and plotting of large, multi-variable NMR data
We present Farseer-NMR (https ://git.io/vAueU), a software package to treat, evaluate and combine NMR spectroscopic data from sets of protein-derived peaklists covering a range of experimental conditions. The combined ...
Multi-phosphorylation of the intrinsically disordered unique domain of c-Src studied by in-cell and real-time NMR
Intrinsically disordered regions (IDRs) are preferred sites for post-translational modifications essential for regulating protein function. The enhanced local mobility of IDRs facilitates their observation by NMR spectroscopy ...
Extending the substrate scope in the hydrogenation of unfunctionalized tetrasubstituted olefins with Ir-P stereogenic aminophosphine-oxazoline catalysts
Air stable and readily available Ir-catalyst precursors modified with MaxPHOX-type ligands have been successfully applied in the challenging asymmetric hydrogenation of tetrasubstituted olefins under mild reaction conditions. ...
A direct, efficient method for the preparation of siRNAs containing ribo like North [3.1.0]hexane pseudosugars
An efficient method for the preparation of siRNAs modified with ribo-like North bicyclo[3.1.0]hexane pseudosugars is described. The combined use of 2'-O-(2-cyanoethoxymethyl) (CEM) and 2'-O-TBDMS protection was successfully ...
Alkynyl gold(I) phosphane complexes: evaluation of structure-activity-relationships for the phosphane ligands, effects on key signaling proteins and preliminary in-vivo studies with a nanoformulated complex
The synthesis and characterization of four organometallic gold(I) complexes containing different water soluble phosphanes (TPPTS, PTA and DAPTA) and chromophoric units (4-pyridylethynyl and propargyloxycoumarin) is here ...
