Carboxylic acid isomer-directed synthesis of CdS nanocluster isomers
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The polar phosphinyl carboxamide, 1'-(diphenylphosphino)-1-[N-(2-hydroxyethyl)carbamoyl]ferrocene [I; Z = null; (1)] , reacts readily with H2O2 and elemental S to give the corresponding phosphine oxide I [Z = O (2)] and phosphine sulfide I [Z = S (3)], res ...
Results of a theoretical study on the properties of Ir4 clusters in the gas–phase and on oxide surfaces are presented. The work is based on density functional theory (DFT) within the generalized gradient approximation (GGA) and ultrasoft pseudopotentials. ...
The reactivity of (E)- and (Z)-1-fluorobuta-1,3-diene ((E)- and (Z)-11), 2-fluorobutadiene (12). (E)and (Z)-1-(fluoromethylidene)-2-methylidenecyclohexane ((E)- and (Z)-13) toward SO2 has been explored and compared with that of (Z)- and (E)-1-(fluoromethyl ...
Molecular events such as cis/trans isomerization of Xaa-Pro tertiary amide bonds in peptides and proteins are slow on the overall time scale of the formation of a final biostructure and are, therefore rate limiting. In order to pursue a better understandin ...
The elusive (E)-2-ethoxyvinyllithium can be readily generated in THF at -75 Deg from (E)-1-bromo-2-ethoxyethylene by halogen/metal exchange and subsequently trapped with electrophiles. Alkylation opens a convenient entry to (E)-configurated enethers. (E)-2 ...
Clusters of metal atoms at a fixed size can assume different structural arrangements, known as isomers, which may have nearly the same energy. Therefore at given experimental conditions distribution of these isomers can be present. While the size selection ...
The reactivity of the cluster family [Ru-3(CO)(12-x)(L)x] (in which L = PMe3, PMe2Ph, PPh3 and PCy3, x = 1 - 3) towards hydrogen is described. When x=2, three isomers of [Ru-3(H)(mu-H)(CO)(9)(L)(2)] are formed, which differ in the arrangement of their equa ...
Extensive computer simulations are presented of several Na microclusters, using the Car-Parrinello method (unified d.-functional theory and mol. dynamics). Dynamical simulated annealing strategies are adopted in the search for low-energy min. of the potent ...
A convergent synthesis of all S-configurated diastereoisomer of RP-66453 (aS,S,S,S,S,S), a peptide secondary metabolite, has been developed. The synthesis is notable for its brevity, partly because functionalized amino acids can be used directly. By combin ...
We have performed ab initio mol. dynamics simulations based on d. functional theory to characterize the structural, electronic, and dynamic properties of the three major isomeric forms of the title compd. In agreement with exptl. results, calcns. with two ...
