Results 51 to 60 of about 27,390 (224)

Bis[benzyl 2-(heptan-4-ylidene)hydrazine-1-carboxylate]bis(thiocyanato)cobalt(II)

open access: yesIUCrData, 2019
The title compound, [Co(NCS)2(C15H22N2O2)2] or C32H44CoN6O4S2, was prepared from cobalt(II) nitrate, benzyl carbazate and ammonium thiocyanate in the presence of 4-heptanone.
Palanivelu Nithya   +2 more
doaj   +1 more source

Heterocyclic systems containing S/N regioselective nucleophilic competition: Facile synthesis, antitubercular and antimicrobial activity of thiohydantoins and iminothiazolidinones containing the benzo [PDF]

open access: yesJournal of the Serbian Chemical Society, 2005
The required compounds N-aryl-N'-(3-chloro-2-benzo[b]thenoyl)-thioureas 1a-k were prepared by condensing 3-chloro-2-benzo[b]thenoyl chloride with different arylamines using ammonium thiocyanate, which in turn when treated with chloroacetic acid, yielded ...
Kachhadia V.V., Patel M.R., Joshi H.S.
doaj   +1 more source

One Hour of Chemical Demonstrations [PDF]

open access: yes, 1997
This article describes a diverse set of chemistry demonstrations especially selected to encourage student interaction and to be easily transported. The demonstrations may be presented at a level that can be tailored to any audience– from very young ...
Brook, B.   +3 more
core   +1 more source

Mutual Interference in the Microchemical Determination of Ore Minerals [PDF]

open access: yes, 1937
The use of microchemical methods is spreading rapidly, both for the qualitative and quantitative determination of elements. Microchemistry offers a decided advantage over "bulk" methods, not only because of the greater speed with which the determinations
Dreyer, Robert Marx
core   +1 more source

Push–Pull Ynamines and Push–Pull Ynamides: Synthesis, Structure, Reactivity, and Application

open access: yesEuropean Journal of Organic Chemistry, EarlyView.
Push–pull ynamines and push–pull ynamides, which carry an EWG and an amino or amido group as EDG, are highly interesting classes of EDG‐EWG alkynes that have been intensively studied due to their exceptional reactivity. In this review, the synthesis, structure, reactivity, and application of push–pull ynamines, push–pull ynecarbamates, push–pull ...
Hans‐Joachim Gais
wiley   +1 more source

Synthesis of guanidine from ammonium thiocyanate in solid state

open access: yesJournal of the Brazilian Chemical Society, 2004
Guanidine is an important substance for modern living beings as well as for the prebiotic chemistry. We studied the reaction between ammonium and thiocyanate species in solid state with different substances (river sand, kaolin, transition metals, salts ...
Zaia Dimas A. M.   +3 more
doaj  

Ceric and ferrous dosimeters show precision for 50-5000 rad range [PDF]

open access: yes, 1968
Ammonium thiocyanate, added to the usual ferrous sulfate dosimeter solution, yielded a very stable, precise and temperature-independent system eight times as sensitive as the classical Fricke system in the 50 to 5000 rad range.
Frigerio, N. A., Henry, V. D.
core   +1 more source

Emerging Perovskite Solar Cells for Building‐Integrated Photovoltaic Applications

open access: yesInformation &Functional Materials, EarlyView.
In this review, we discuss technological approaches of perovskite solar cells that are highly compatible with the requirements of building‐integrated photovoltaic applications, including semi‐transparent, colorful, and flexible perovskite solar cells.
Yongke Liang   +4 more
wiley   +1 more source

New Mono- and Diesters with Imidazoquinolinone Ring- Synthesis, Structure Characterization, and Molecular Modeling

open access: yesMolecules, 2020
The objective of the studies was to synthesize and characterize new mono- and diesters with an imidazoquinolin-2-one ring with the use of 2,3-dihydro-2-thioxo-1H-imidazo[4 ,5-c]-quinolin-4(5H)-ones and ethyl bromoacetate.
Iwona Zarzyka   +5 more
doaj   +1 more source

Effects of NH4SCN Additive in the FAPbI3 Perovskite Films in a Sequential Deposition Method

open access: yesCrystals, 2023
This study determined the effect of introducing the NH4SCN additive in the precursor solution of PbI2 of a sequential deposition method in an open atmosphere to form FAPbI3 perovskite over a glass substrate.
Jorge Luis Miró-Zárate   +3 more
doaj   +1 more source

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