Results 21 to 30 of about 8,787 (254)
Selective reduction and homologation of carbon monoxide by organometallic iron complexes
Nature Communications, 2018 Metal-mediated activation of CO for C-C coupling reactions is a valuable approach to carbon monoxide valorization. Here, the authors use low-coordinate iron(II) complexes for the selective scission and homologation of CO affording unusual squaraines and ...
Helen R. Sharpe +10 more
doaj +1 more source
Inorganics, 2023 Two new coordination polymers based on Zn(II) and 2,5-diiodoterephthalate—{[Zn(2,5-I-bdc)bpe}] (1) and {[Zn(2,5-I-bdc)bpen}] (2)—were synthesized and characterized.
Alexander S. Zaguzin +4 more
doaj +1 more source
Carboxylic acid-modified metal oxide catalyst for selectivity-tunable aerobic ammoxidation
Nature Communications, 2018 Precisely controlling the surface properties of base-metal oxide catalysts to tune the reaction selectivity remains a challenge. Here, the authors show that a green modification of manganese oxide surface with carboxylates can be used to tune the ...
Xiuquan Jia +5 more
doaj +1 more source
Heritage Science, 2018 Metal soaps and resinates are known to be spontaneously formed in artistic paintings, as a product of the reaction between aliphatic and terpenoid acids released by hydrolysis and oxidation of the organic media and certain cations contained in some ...
Jacopo La Nasa +3 more
doaj +1 more source
Site-selective electrochemical carboxylation of aromatic C(sp2)–H bonds with CO2
Current Research in Green and Sustainable Chemistry, 2023 We present a facile and economical method for synthesizing aromatic carboxylic acid derivatives through direct electrochemical C(sp2)–H carboxylation of (hetero)arenes with CO2.
Rong Zhao +4 more
doaj +1 more source
Thermo-Responsivity of the Polyacrylate-Adsorbed Metal Cation and its Hydration Structure
Adsorption Science & Technology, 2008 The thermo-responsive phase behaviour of the sodium salt of poly(acrylic acid) (PAA) was studied when its counter-ion was exchanged for a series of metal cations (PAA–metal cation complexes).
Yoshimi Seida +3 more
doaj +1 more source
MIXED-METAL COMPLEXES OF RUTHENIUM(II,III) CARBOXYLATE AND TETRACYANIDOPLATINATE(II) [PDF]
Chemistry Journal of Moldova: General, Industrial and Ecological Chemistry, 2015 Mixed-metal complexes constructed from dinuclearruthenium(II,III) carboxylates and tetracyanidoplatinate(II), [{Ru2(O2CCH3)4}2Pt(CN)4]•2H2O (1) and [{Ru2{O2CC(CH3)3}4}2Pt(CN)4]•2H2O (2), were synthesized and characterized by elemental analysis and IR and
Masahiro Mikuriya +5 more
doaj
Energy Exploration & Exploitation, 2018 Trace element enrichment in coals has increasingly been focused in the community of coal geochemistry. To research the enrichment mechanism of trace element in coals on molecular/atomic scale is an important complement of field investigations, but ...
Le-Cai Xing +7 more
doaj +1 more source
Reconstructing enzyme evolution by protein engineering
FEBS Letters, EarlyView.Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler +2 more
wiley +1 more source
Heavy metal biosorption sites in Penicillium cyclopium
Journal of Applied Sciences and Environmental Management, 2006 The biomass of Penicillium cyclopium was subjected to chemical treatment to study the role of the functional groups in the biosorption of heavy metal ions. The modifications of the functional groups were examined with infrared spectroscopy.
Kolishka Tsekova +2 more
doaj +1 more source