Results 41 to 50 of about 6,074,292 (203)

Cobalt(II)-catalyzed oxidative esterification of aldehydes: a cooperative effect between cobalt and iodide ions

, 2016
The efficient cobalt(II) catalyzed oxidative alkoxylation of aldehydes, a method directly leading to the corresponding esters, is presented. Mechanism studies provide extensive insights into the cobalt mediated decomposition of TBHP in the presence of ...
Li, Ting, Zhang, Suo-Jiang, Wang, Lei, Guo, Ya-Fei, Xu, Bao-Hua   +4 more
core   +1 more source

Impact of the Process Atmosphere During Hot Isostatic Pressing on the Near‐Surface Composition of an Additively Manufactured Austenitic High‐Interstitial Steel

Advanced Engineering Materials, EarlyView.
A high interstital austenitic steel is additively manufactured and postdensified by HIP to eliminate gas porosity. Thereby, the loss of N and Mn in Ar HIP atmosphere is investigated. Further, HIP using N2 atmosphere is investigated which led to excessive nitride formation.
F. Großwendt, J. Hahn, J. Kimm, S. Weber, J. Lentz   +4 more
wiley   +1 more source

Cobalt-Catalyzed Enantioselective and Chemodivergent Addition of Cyclopropanols to Oxabicyclic Alkenes

, 2019
We report herein cobalt-catalyzed enantioselective and chemodivergent reactions between a cyclopropanol and an oxabicyclic alkene via a cobalt homoenolate, which afford either an alkylative ring-opening product or a hydroalkylation product, with the ...
Junfeng Yang, Yoshiya Sekiguchi (6724583), Naohiko Yoshikai, Naohiko Yoshikai (1479319), Junfeng Yang (1590952), Yoshiya Sekiguchi   +5 more
core   +2 more sources

STUDIUL SPECTROFOTOMETRIC AL COMPUŞILOR COORDINATIVI AI COBALTULUI(II), NICHELULUI(II) ŞI CUPRULUI(II) CU TIOSEMICARBAZONA ALDEHIDEI 5-(METILENTRIMETILAMONIU)SALICILICE

Studia Universitatis Moldaviae: Stiinte reale si ale naturii, 2016
Tiosemicarbazona aldehidei 5-(metilentrimetilamoniu)salicilice ([H2L]Cl) are structură ionică, este solubilă în apă şi formează cu ionii de cobalt(II), nichel(II) şi cupru(II) compuşi coloraţi caracterizaţi spestral prin maximum de absorbţie la 390 nm ...
Angela SÎRBU
doaj   +2 more sources

Contact sensitization to metals in dental exposures in Bulgaria

Biotechnology & Biotechnological Equipment, 2018
The purpose of this study was to evaluate the incidence of contact sensitization to metals used in dental practice among students of dental medicine, students from a dental technician school, dental professionals and patients. A total of 128 participants:
Maya Lyapina, Maria Dencheva, Assya Krasteva, Mariana Cekova, Mariela Deliverska, Vlayko Vodenicharov, Daniel Markov, Yordanka Mitova, Angelina Kisselova   +8 more
doaj   +1 more source

Biomass Native Structure Into Functional Carbon‐Based Catalysts for Fenton‐Like Reactions

Advanced Functional Materials, EarlyView.
This study indicates that eight biomasses with 2D flaky and 1D acicular structures influence surface O types, morphology, defects, N doping, sp2 C, and Co nanoparticles loading in three series of carbon, N‐doped carbon, and cobalt/graphitic carbon. This work identifies how these structural factors impact catalytic pathways, enhancing selective electron
Wenjie Tian, Jingkai Lin, Zhihao Tian, Selusiwe Ncube, Huayang Zhang, Emiliano Cortés, Hongqi Sun, Shaobin Wang   +7 more
wiley   +1 more source

A Comprehensive Study of the Cobalt(II) Chelation Mechanism by an Iminodiacetate-Decorated Disaccharide Ligand

Molecules
We report an investigation on the cobalt(II) chelation mechanism by a modified α-maltoside ligand 9 decorated with two iminodiacetate (IDA) residues on C6,C6′ positions. Herein we uncovered the capacity of this biodegradable ligand to chelate cobalt(II),
Cécile Barbot, Laura Gouriou, Mélanie Mignot, Muriel Sebban, Ping Zhang, David Landy, Chang-Chun Ling, Géraldine Gouhier   +7 more
doaj   +1 more source

The crystal structures of iron and cobalt pyridine (py)–sulfates, [Fe(SO4)(py)4]n and [Co3(SO4)3(py)11]n

Acta Crystallographica Section E: Crystallographic Communications, 2018
The solid-state structures of two metal–pyridine–sulfate compounds, namely catena-poly[[tetrakis(pyridine-κN)iron(II)]-μ-sulfato-κ2O:O′], [Fe(SO4)(C5H5N)4]n, (1), and catena-poly[[tetrakis(pyridine-κN)cobalt(II)]-μ-sulfato-κ2O:O′-[tetrakis(pyridine-κN ...
Duyen N. K. Pham, Mrittika Roy, Ava Kreider-Mueller, James A. Golen, David R. Manke   +4 more
doaj   +1 more source

Crystal structures of two Co(NCS)2 urotropine coordination compounds with different Co coordinations

Acta Crystallographica Section E: Crystallographic Communications, 2022
The reaction of Co(NCS)2 with urotropine in ethanol leads to the formation of two different compounds, namely, bis(ethanol-κO)bis(hexamethylenetetramine-κN)bis(thiocyanato-κN)cobalt(II)–diaqua-κ2O-bis(hexamethylenetetramine-κN)bis(thiocyanato-κN)cobalt ...
Christoph Krebs, Inke Jess, Christian Näther   +2 more
doaj   +1 more source

Electrospun Wood‐Derived Biopolymers as Electrodes in Electrochemical Energy Storage Technologies

Advanced Functional Materials, EarlyView.
Electrospinning transforms wood‐derived cellulose and lignin into architecturally defined, binder‐free carbon electrodes with tuneable porosity and functionality. This review shows how fibre design enables decoupled charge and mass transport, enhancing performance across battery systems, while identifying key challenges in spinnability, scalability ...
Michael W. Thielke, Hattie R. Chisnall, Jesus Vazquez Chavez, Ana B. Jorge Sobrido   +3 more
wiley   +1 more source