A thiol group refers to a sulfur-containing group located in the para position of an aromatic ring, with varying amino carbon substitutions. It is commonly found in research chemicals and antidepressants due to its specific serotonergic agonism. ...
The sulfosalts have a smaller number of elements as major constituents than the sulfides. In the sulfosalt general formula A is Cu, Ag, Pb, and Sn; B is As, Sb, Bi, and Sn; and X is S. The number of species and the complexities of composition make the sulfosalt class of minerals...
(ii) when K is a gruop of Formula (a), at least one of R 4 and R 5 is hydrogen, (iii) the total number of anionic groups equals or exceeds the total number of basic and cationic groups, (iv) the positive charge of each cationic group is balanced by the negative charge of an ...
The SO sulfuryl bond in a number of representative sulfoxides and sulfones has been studied at the B3LYP/6-311+G(d,p) level in the atoms-in-molecules (AIM) approach involving the AIM delocalization index and the Cioslowski-Mixon localized orbitals and associated covalent bond order. The su...
Besides avoiding hazardous sulfur reagents, the new protecting-group-free approach reduces drastically the total number of steps, compared to described procedures. The main drawback, i.e. handling of liquid bromine as an activating and oxidizing reagent in water, was addressed by evaluating four ...
A number of new open chain bis -sulfonamides with 2, 3 and 4 ether oxygen atoms were synthesized and their Na + and K + extractability was tested. For these types of ligands, both sulfonamide protons are ionized and two aqueous phase cations are complexed in the extraction. The ligand-cati...
Dideu Industries is an integrated group company which mainly produce and operate the business of basic chemical raw materials, chlor-alkali chemicals, fine chemicals, building materials and coal chemicals.We provided mixed xylene isomers, sulfur, rare metal extractant, chemical reagent, polyvinyl ...
Every atom of sulfur when hydrogenated produces one molecule of H2S. Therefore, the number of moles of H2S formed during the reduction of a given group is equivalent to the number of moles of the sulfur group reduced (provided that the sulfur group contained only one sulfur atom). (2) When...
Convenient synthetic routes toward sugar phosphonates, in which the phosphono group is C- or P-linked to the sugar moiety, as well as for sulfur-containing analogs, have been devised. Most of the reported strategies are straightforward, using sugar electrophiles such as sugar halides, glycals,...
Then in 1869, as a result of an extensive correlation of the properties and the atomic weights of the elements, with special attention tovalency(that is, the number of single bonds the element can form), Mendeleev proposed the periodic law, by which “the elements arranged according to the ...