The simplest possible atom (and the most common one in the Sun and stars) is hydrogen. The nucleus of ordinary hydrogen contains a single proton. Moving around this proton is a single electron. The mass of an electron is nearly 2000 times smaller than the mass of a proton; the electron ...
Similarly he used the same principle to explain that the different ratios of nitrogen to oxygen in various nitrogen oxides were simple multiples of each other.However, John Dalton wrongly postulated that when atoms combine only in one ratio, it must be assumed to be binary (in two) one. He...
et al. Super-oxidation of silicon nanoclusters: magnetism and reactive oxygen species at the surface. Nanoscale 8, 1816–1820 (2016). CAS Google Scholar Fubini, B. & Hubbard, A. Reactive oxygen species (ROS) and reactive nitrogen species (RNS) generation by silica in inflammation and ...
Ozonolysis reactions convert alkenes into carbon–oxygen compounds via C=C bond cleavage. Now the cleavage of alkenes to form carbon–nitrogen bonds—the aza version of ozonolysis, termed triazenolysis—has been developed. The reaction produces diamines from cyclic alkenes, while acyclic C=C bonds...
Oxadiazines are heterocyclic compounds containing two nitrogen and one oxygen atom in a six-membered ring. The synthesis and crystal structure of 4-(4-methoxyphenyl)-6-methyl-3-phenyl-4H-1,2,4-oxadiazin-5(6H)-one (MPMP-OXA) was reported. The organic crystal structure of the synthesized ...
Adsorption to polymer due to repulsion by water molecules BUT cation reacts weakly with polymer oxygen (large atom). Cation competes with water over polymer. 负电大离子因为要与polymer 正电性部分结合(此处为H),在结合过程中位阻比较小,结合容易。 Adsorption to polymer due to repulsion by water mol...
H67 is stabilized by a hydrogen bond to the carbonyl oxygen of L65 from its ND1 atom, while the NH1 atom of the R51 side-chain hydrogen bonds to the carbonyl groups of both G55 and itself; a similar pattern is also observed in E. coli IIANtr. The side-chain of R69 is folded ...
For all 3456 molecules in an independent unit cell, the volume of the Voronoi polyhedron (VVP) constructed around the oxygen atom, the tetrahedricity index (T), and the potential energy of the molecule (E pot) were calculated. Based on the values of these parameters, the molecules were ...
The interlayer of PDA increases the layer space of Ti3C2Tx solving the self-stacking during cycling. Dopamine forms hydrogen bonding with surface functional groups, while Ti forms strong bonding with oxygen atoms in polydopamine, which help strengthen the materials and maintain the stability of the ...
The solvent-accessible surfaces are colored by atom with yellow for carbon, blue for nitrogen and red for oxygen. (B) The HET-s PFD surface showing a complete 360° twist of the fibril (broken into two panels). The amino acid residues are colored yellow for nonpolar (F,W,Y,P,V,A,I...