Nature of the bond in the oxygen compounds of sulfurnature of the bond in the oxygen compounds of sulfurdoi:10.1007/BF00748883M. A. Porai-KoshitsAcademy of SciencesS. P. IonovAcademy of SciencesKluwer Academic Publishers-Plenum PublishersJournal of Structural Chemistry...
A major point is related to the need to adjust the sample pH to 11. At this value, all mercaptans are supposed to be under thethiolateform, which is known to be readily oxidized at high pH value in the presence of dissolved oxygen. Thus the spectra acquisition must be carried out less...
The oxygen atom, sulfur atom and amine (-NH-) group are bioisosteres with the same numbers of the outermost electrons and bond angle. So, substitution of the carbon-oxygen (C-O) bond at the C-4 position of PTOX and DMEP with C-S and C-NH bonds may also be a potential modification...
Similarly, other investigators hinted that a combination of environmental factors, including light quality and quantity and sulfide and oxygen concentrations, need to be considered when evaluating the competitive position between CSB and PSB (Jørgensen and Des Marais, 1986). In further investigations,...
Dimensions of coordinated and free disulfite are not significantly different; however, the ligand is disordered around a C2 axis passing through the Fe atom and bisecting the S S bond of the chelate ring. This is the first structure of a transition metal disulfite complex. The results suggest ...
As a consequence, and due to the historical focus on nitrogen and oxygen, the definition of a H-bond is primary based on the characteristics of oxygen and nitrogen2. Whether a hydrogen bond is formed or not depends on the electronegativity of an atom, as electronegativity is the power of ...
Bond-bond interactions in alkanes and their hetero analogs. Allen-type group increments for estimating enthalpies of formation of alkanes and their oxygen,... K Pihlaja,K Rossi,P Vainiotalo - 《Journal of Chemical & Engineering Data》 被引量: 5发表: 1985年 A biomolecular force field based ...
Administer oxygen if breathing is difficult. Remove and isolate contaminated clothing and shoes. In case of contact with substance, immediately flush skin or eyes with running water for at least 20 minutes. Removal of solidified molten material from skin requires medical assistance. Keep victim warm...
Interestingly, yeasts undergoing SAAR upregulated MET1, MET3, MET5, and MET10 genes which are associated with increased H2S production (Choi et al., 2019). However, SAAR failed to increase H2S production in mutant strains, but still extended chronological lifespan and reduced reactive oxygen ...
As expected, the sulfur atom in all cases is pyramidal, the alkyl substituents being 68–69 ° out of plane and the oxygen of (64) 59 ° out of plane. In all cases the carbon–sulfur bond lenghs are significantly greater than for the nonalkylated (oxidized) analogs. This point is ...