Results 31 to 40 of about 2,092,133 (294)

Two Metals Are Better Than One in the Gold Catalyzed Oxidative Heteroarylation of Alkenes [PDF]

, 2011
We present a detailed study of the mechanism for oxidative heteroarylation, based on DFT calculations and experimental observations. We propose binuclear Au(II)–Au(II) complexes to be key intermediates in the mechanism for gold catalyzed oxidative ...
Benitez, Diego, Goddard, William A., III, Mankad, Neal P., Tkatchouk, Ekaterina, Toste, F. Dean   +4 more
core   +2 more sources

Rice husk ash-based selective absorbent with imprinted ionic for gold recovery

Communications in Science and Technology
The recovery of gold from aqueous solutions is crucial due to its economic value and environmental significance, making effective separation technologies essential.
Sri Hastuti, Ema N. Fajariani, Intan K. Candraningrum, Tri Martini, Sayekti Wahyuningsih, Fitri N. Aini   +5 more
doaj   +1 more source

Polysulfone Influence on Au Selective Adsorbent Imprinted Membrane Synthesis with Sulfonated Polyeugenol as Functional Polymer

Membranes, 2020
An ionic imprinted membrane (IIM) was synthesized using sulfonated polyeugenol, derived from eugenol, as its functional polymer and polysulfone as its base membrane for the selective adsorption of Au(III).
Muhammad Cholid Djunaidi, Nor Basid Adiwibawa Prasetya, Arini Khoiriyah, Pardoyo Pardoyo, Abdul Haris, Nabilah Anindita Febriola   +5 more
doaj   +1 more source

Photoinitiated oxidative addition of CF3I to gold(I) and facile aryl-CF3 reductive elimination. [PDF]

, 2014
Herein we report the mechanism of oxidative addition of CF3I to Au(I), and remarkably fast Caryl-CF3 bond reductive elimination from Au(III) cations. CF3I undergoes a fast, formal oxidative addition to R3PAuR (R = Cy, R = 3,5-F2-C6H4, 4-F-C6H4, C6H5, 4 ...
TOSTE, F. Dean, Winston, Matthew, Wolf, William   +2 more
core   +1 more source

A further insight into the biosorption mechanism of Au(III) by infrared spectrometry

BMC Biotechnology, 2011
Background The interactions of microbes with metal ions form an important basis for our study of biotechnological applications. Despite the recent progress in studying some properties of Au(III) adsorption and reduction by Bacillus megatherium D01 ...
Lin Zhongyu, Ye Yiwen, Li Qiaoling, Xu Zhenling, Wang Miao   +4 more
doaj   +1 more source

Synthesis, Characterization and Staining Ability of Novel Azo Dye Based on Curcumin and Its Au(III) Complex

Indonesian Journal of Chemistry, 2023
Azo dye ligand (HMDA), namely N-(4-((E)-((1E,6E)-1,7-bis(4-hydroxy-3-methoxyphenyl)-3,5-dioxohepta-1,6-dien-4-yl)diazenyl)phenyl)acetamide was prepared by coupling diazonium salt of 4-aminoacetanilide with curcumin in basic conditions.
Wesam Dheyab Kzar, Hasan Shamran Mohammed, Fatimah Swadi Zghair, Zahia Zizi   +3 more
doaj   +1 more source

Homogeneous Gold Catalysis through Relativistic Effects: Addition of Water to Propyne

, 2009
In the catalytic addition of water to propyne the Au(III) catalyst is not stable under non-relativistic conditions and dissociates into a Au(I) compound and Cl2.
Baerends E. J., Bond G. C., Bongers N., Cancès M. T., Casado R., Cortie M. B., Cossi M., Dunning T. H., Fukuda Y., Fukuda Y., Gorin D. J., Haruta M., Haruta M., Hashmi A. S. K., Hashmi A. S. K., Hashmi A. S. K., Hashmi A. S. K., Hashmi A. S. K., Hashmi A. S. K., Hüttel R., Hüttel R., Ishida T., Mizushima E., Nkosi B., Nolan S. P., Peterson K. A., Puddephatt R. J., Pyykkö P., Pyykkö P., Pyykkö P., Pyykkö P., Pyykkö P., Pyykkö P., Riedel S., Roembke P., Roithová J., Schwerdtfeger P., Schwerdtfeger P., Schwerdtfeger P., Schwerdtfeger P., Schwerdtfeger P., Seth M., Siekierski S., Straub B. F., Teles J. H., Woon D. E., Woon D. E.   +46 more
core   +1 more source

DEVELOPMENT OF SPECTROPHOTOMETRIC DETERMINATION METHOD OF GOLD BY OXIDATIVE COUPLING

Trakya University Journal of Natural Sciences, 2012
In this study, m- and p-phenylenediamine’s reactions which were in the presence of Cu(II) and Au(III) ions were investigated using spectrophotometric and potentiometric method.
Gülbin Erdoğan, Emre Dölen, Hilmi İbar   +2 more
doaj   +6 more sources

The Ca²⁺-ATPase Inhibition Potential of Gold(I, III) Compounds

Inorganics, 2020
The therapeutic applications of gold are well-known for many centuries. The most used gold compounds contain Au(I). Herein, we report, for the first time, the ability of four Au(I) and Au(III) complexes, namely dichloro (2-pyridinecarboxylate) Au(III ...
Custódia Fonseca, Gil Fraqueza, Sónia A. C. Carabineiro, Manuel Aureliano   +3 more
doaj   +1 more source

Extraction of Au(III), Pt(IV), and Pd(II) from Aqueous Media with Deep Eutectic Solvent Dissolved in n-Heptane as Extractant

Indonesian Journal of Chemistry, 2023
Due to the scarcity, studying precious metals extraction such as gold, platinum, and palladium is very critical. Solvent extraction is one of the established methods due to its simplicity and quickness but the low operational cost.
Pius Dore Ola, Michiaki Matsumoto
doaj   +1 more source