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...
γ-Al2O3 is one of the most widely used catalysts or catalyst supports in numerous industrial catalytic processes. Understanding the structure of γ-Al2O3 is essential to tuning its physicochemical property, which still remains a great challenge. We repo
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...
Water is the most plentiful liquid on Earth. Its simple chemical structure - two hydrogen atoms bonded to one oxygen atom - is the basic building block of most life on Earth, said Wang Enge, lead researcher. "But the science behind water, especially regarding its structure and interaction wit...
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 ...
The crystal structure and oxygen nonstoichiometry of layered perovskites GdBaCo2 x Fe x O6 δ (x =0; 0.2; 0.4; 0.6)IvanovI.L.TsvetkovD.S.ingentaconnectPhysics of Particles & Nuclei Letters C/c of Pisma O Fizike Elementarnykh Chastits I Atomnogo Iadra...
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 ...
The formation of deep glassy ice VI starts gradually above 1.0 GPa as indicated by the orange-shaded area. b The hydrogen atoms of the ice VI structure are shown in white, and the oxygen atoms of the two individual networks in burgundy and orange, respectively. The unit cell is ...
including primary and secondary hydration shells; (4) the distinct appearance of density for individual oxygens of carboxylate groups, which occasionally begin to show traces of H-bonding geometry, and (5) appearance of density that corresponds to the first indications of hydrogen atoms (Supplementary...