Results 11 to 20 of about 18,968 (195)

Ueber Amido‐ und Oxyphenanthrenchinon [PDF]

Berichte der deutschen chemischen Gesellschaft, 1885
n ...
Anschütz, R., Meyer, Peter
openaire   +2 more sources

Bis(amido)diazadiarsetidinide and Amido(imino)arsenide Complexes of Divalent Metals [PDF]

European Journal of Inorganic Chemistry, 2021
AbstractThe Mg and Ca complexes of the tert‐butyl substituted bis(amido)diazadiarsetidinides [{(tBuNAs)2(tBuN)2}M(thf)2] (M=Mg (1), Ca (6)) were prepared by addition of nBu‐secBuMg or [{(p‐tBu)(C6H4)CH2}2Ca] to [(tBuNAs)2(tBuNH)2] (Ia). Upon evaporation of coordinating THF, 1 is selectively converted to the amido(imino)arsenide complex [Mg{As(NtBu)2}2]
Christian Ritter, Carsten von Hänisch
openaire   +1 more source

Ueber freie Amido‐aldehyde [PDF]

Berichte der deutschen chemischen Gesellschaft, 1905
n ...
Wohl, A., Losanitsch, M. S.
openaire   +2 more sources

Preparation and evaluation of amido poly amine surfactant based on Melia azedarach seeds oil as corrosion inhibitor of C-steel in 2.0 M HCl pickling medium

Green Chemistry Letters and Reviews, 2017
Oil of Melia azedarach seeds (MA-oil) was extracted and modified in the form of amido poly amine surfactant (MA-amido surfactant). The surface active properties of the new MA-amido surfactant were analyzed. Corrosion inhibition of C-steel in 2.0 M HCl by
Asmaa A. I. Ali, Wagdy I. A. El-Dougdoug
doaj   +1 more source

Status of national research bioethics committees in the WHO African region

BMC Medical Ethics, 2005
Background The Regional Committee for Africa of the World Health Organization (WHO) in 2001 expressed concern that some health-related studies undertaken in the Region were not subjected to any form of ethics review.
Wambebe Charles, Kirigia Joses M, Baba-Moussa Amido   +2 more
doaj   +1 more source

Utilização de subprodutos de arroz para obtenção de amido e xaropes de glicose

Vetor, 2007
Partindo da farinha de arroz, obteve-se amido pela solubilização das proteínas e extração num meio alcalino. O amido obtido foi utilizado como matéria-prima para a elaboração de xaropes de glicose via hidrólise ácida e enzimática.
Myriam de las Mercedes Salas-Mellado, Carlos André V. Burkert, Marta Leal Guimarães, Geovana Rocha Plácido Moore, Elisa Helena Leão Fernandes   +4 more
doaj   +4 more sources

Tailoring High‐Valent Iron‐Oxo Species Redox via Extended π‐Fe3d–O2p Orbital Overlapping Toward Chemical‐Efficient Water Purification

Angewandte Chemie, EarlyView.
We address the long‐standing challenge of reactivity–selectivity trade‐off by precisely tuning the redox properties of Fe(IV), rather than simply accelerating its formation, to enable chemically efficient and low‐emission water treatment. ABSTRACT High‐valent iron oxo species (Fe(IV)) are attractive for wastewater treatment because of their high ...
Hongyu Zhou, Junwen Chen, Jiuyi Wang, Xinhao Wang, Qiming Zhang, Shiying Ren, Xuning Li, Li Gao, Shaobin Wang, Xiaoguang Duan   +9 more
wiley   +2 more sources

Chelation Drives Surface Substitution in Hybrid‐MXenes

Angewandte Chemie, EarlyView.
We demonstrate ethylenediamine‐derived bidentate binding on Ti3C2 by controlled deprotonation of ─NH2 groups during reaction with Ti3C2Br2. XRD, XPS, ssNMR, STEM, DFT, and INS confirm the bidentate coordination and the superior stability of chelating modes, while AIMD reveals proton transfer and new surface imine–Ti bonding mode.
Vikash Khokhar, Young‐Hwan Kim, Abu Rashed Md. Shawon, Fatemeh Karimi, Danial Zangeneh, Yongqiang Cheng, Chang Liu, Murillo Longo Martins, Alexander S. Filatov, Robert F. Klie, Aaron J. Rossini, John S. Anderson, Dmitri V. Talapin, De‐en Jiang   +13 more
wiley   +2 more sources

Nucleophilic Gallyl Anions Enable Ga─Au Bimetallic Ammonia Activation

Angewandte Chemie, EarlyView.
Unlocking gallyl nucleophiles: Counterion control enables formation of an unsupported gallyl─gold complex. Gold coordination induces a polarity switch at gallium, enabling cooperative activation of NH3 and related N─H/O─H substrates under mild conditions.
Hellen Videa, Keelan M. Byrne, Tobias Krämer, Antonio J. Martínez‐Martínez   +3 more
wiley   +2 more sources

Water, Alcohols, Amines, and Amides as Formal Hydrogen‐Atom‐Transfer Reagents Through Activation With Redox‐Active Lewis Acids

Angewandte Chemie, EarlyView.
Protic molecules containing strong O─H or N─H bonds typically resist hydrogen‐atom abstraction because of the high reactivity of the resulting heteroatom‐centered radicals. However, association of the protic molecules with redox‐active Lewis acids can provide powerful hydrogen‐atom donors or proton‐coupled‐electron‐transfer reagents.
Petra Vojáčková, Armido Studer
wiley   +2 more sources