Browsing QUIO_Articles by Title
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C2 symmetrical nickel complexes derived from α-amino amides as efficient catalysts for the enantioselective addition of dialkylzinc reagents to aldehydes
Elsevier (2013-01)A series of C2 symmetrical 1:2 Ni:L complexes derived from α-amino amides were studied for the enantioselective addition of dialkylzinc reagents to aldehydes. Different structural elements on the ligands seem to play an ... -
Carboxylate-Functionalized Mesoionic Carbene Precursors: Decarboxylation, Ruthenium Bonding, and Catalytic Activity in Hydrogen Transfer Reactions
American Chemical Society (2016)Metalation of a carboxylate-functionalized pyridyl-triazolium salt containing a N1-bound pyridyl substituent either by direct means with [RuCl2(cymene)]2 or via a transmetalation procedure involving Ag2O and [RuCl2(cymene)]2 ... -
Catalyst Enhancement and Recyclability by Immobilization of Metal Complexes onto Graphene Surface by Noncovalent Interactions
ACS Publications (2014-05-14)The immobilization of a homogeneous catalyst onto a solid surface is one of the major challenges in catalysis, because it may facilitate the separation of the catalyst and the reaction products and may also give rise to ... -
Catalytic applications of magnetic nanoparticles functionalized using iridium N-heterocyclic carbene complexes
The Royal Society of Chemistry (2015)synthetic modular methodology allows the preparation of catalytic materials based on magnetic nanoparticles with iridium N-heterocyclic carbene (NHC) complexes. Imidazolium salts containing a ketone/aldehyde as a pendant ... -
Catalytic Dehydrogenative Coupling of Hydrosilanes with Alcohols for the Production of Hydrogen On-demand: Application of a Silane/Alcohol Pair as a Liquid Organic Hydrogen Carrier
Wiley (2017)The compound [Ru(p-cym)(Cl)2(NHC)] is an effective catalyst for the room-temperature coupling of silanes and alcohols with the concomitant formation of molecular hydrogen. High catalyst activity is observed for a variety ... -
Catalytic enantioselective epoxidation of nitroalkenes
Royal Society of Chemistry (2016)Nitroepoxides are potentially exploitable as synthons with vicinal electrophilic centers. Nevertheless, although advances have been made in the field, enantioselective epoxidation of nitroalkenes is still a challenging ... -
Catalytic Hydrodefluorination with Late Transition Metal Complexes
ACS Publications (2014-08-07)This perspective article focuses its attention on the most recent advances in hydrodefluorination processes catalyzed by late transition metal complexes, a field that has been a matter of increasing interest during the ... -
Catalytic Hydrogen Production by Ruthenium Complexes from the Conversion of Primary Amines to Nitriles: Potential Application as a Liquid Organic Hydrogen Carrier
Wiley (2016)The potential application of the primary amine/nitrile pair as a liquid organic hydrogen carrier (LOHC) has been evaluated. Ruthenium complexes of formula [(p-cym)Ru(NHC)Cl2] (NHC=N-heterocyclic carbene) catalyze the ... -
Ceramic pigments based on chromium doped alkaline earth titanates
Elsevier (2013-05)In this paper M(Ti1−xCrx)O3 with M=Mg, Ca, Sr, Ba and x=0.01, 0.03, 0.05, 0.1 compositions have been prepared by solid state reaction in order to analyze their reactivity, structure, limit of solid solution, stability and ... -
Ceramic pigments from CoxNi3-xP2O8 (0 ≤ x ≤ 3) solid solutions
Elsevier (2021-07-17)CoxNi3-xP2O8 (0 ≤ x ≤ 3) solid solutions were synthesized via the chemical co-precipitation method. Variation of unit cell parameters and interatomic distances indicated that these solid solutions with the Ni3P2O8 structure ... -
Ceramic pigments with sphene structure obtained by both spray- and freeze-drying techniques
Elsevier (2009)The present study is focused on the procedure of spray- and freeze-drying techniques for the preparation of Cr-doped sphene pigments (CaSn0.98Cr0.02 SiO5, CaTi0.98Cr0.02SiO5) from an aqueous solution of precursor salts, ... -
Ceramic porcelain stoneware production with Spanish clays purified by means of the removal of iron compounds and organic matter using physical methods
Elsevier (2017)As the production of ceramic porcelain stoneware in Spain is totally conditioned by the importation of ball clays, because of the lack of adequate Spanish ball clays, this work has focused on the formulation of ceramic ... -
Ceramization of heavy metals in (Ba1−X Mx)Al2Si2O8 celsian solidsolutions and recycling as pigments
Elsevier (2018)Ceramization of several heavy metals (M = Cr, Fe, Co and Ni) in celsian lattice has been studied by sinter-ing up to 1500 °C of its oxides with BaCO3,Al(OH)3and SiO2in order to obtain (Ba1XMx)Al2Si2O8solidsolutions. ... -
Chameleonic, Light Harvesting Photonic Gels Based on Orthogonal Molecular Fibrillization
American Chemical Society (2016-10)The preparation of smart photonic gels composed of two orthogonally self-assembled fibrillar networks is reported. The molecular gelators are a light acceptor derived from 4-amino-1,8-naphthalimide and an acridine-based ... -
Characterization of amine stabilized CdSe/ZnS core–shell quantum dots by using triarylpyrylium dyes
Royal Society of Chemistry (2016-06-13)A new method to study the stabilizing primary amine ligands coordinated to the surface of CdSe/ZnS core–shell quantum dots has been developed. The method is based on the reactivity of fluorescent 2,4,6-triarylpyrylium dyes ... -
Characterization of MgxM2 − xP2O7 (M = Cu and Ni) solid solutions
Elsevier (2012)In this study, MgxM2 − xP2O7 (M = Cu, Ni; 0 ≤ x ≤ 2) and Mg3 − yNiy(PO4)2 (0 ≤ y ≤ 3) compositions were synthesized by the chemical coprecipitation method and characterized by X-ray diffraction, UV–vis–NIR spectroscopy and ... -
Characterization of yellow and red inorganic pigments from Mg0.5Cu1.5VxP2−xO7 (0 ≤x≤2) solid solutions
Springer (2020)The structural characterization of Mg0.5Cu1.5VxP2−xO7 (0.0 ≤x≤2.0) compositions was performed and the colour parameters of these materials measured. Solid solutions in the α-Cu2P2O7, β-Cu2P2O7 and β-Cu2V2O7 structures were ... -
Chemical constituents and standardization of Piper piedecuestanum TREL & YUNCK. With antiplasmodial and cytotoxic activity
Cogent OA (2019)Malaria is a parasitic disease that still prevails in the world and has been widely treated with the use of healing herbs. In this work isolation and extraction strategies have been implemented to get five molecules: ... -
Chemically Fueled Self-Sorted Hydrogels
American Chemical Society (2022-01-12)Narcissistic self-sorting in supramolecular assemblies can help to construct materials with more complex hierarchies. Whereas controlled changes in pH or temperature have been used to this extent for two-component self-sorted ... -
ChemMend: A Card Game To Introduce and Explore the Periodic Table while Engaging Students’ Interest
American Chemical Society (2014)The deeply knowledge of the periodic table is one of the most important keys to understand the basic principles of Chemistry. Memorizing the elements of the groups and periods is one of the most commonly used strategies ...