Bernt Krebs

TL;DR: The selective epoxidation of cis double bonds of macrocyclic aliphatic hydrocarbons having 8 to 20 ring carbon atoms occurs by a catalytic process as mentioned in this paper, where the used catalyst system consists of a cationic phase transfer catalyst and an anionic polyoxometallate which is a polytungstate or a polymolybdate.

TL;DR: In the present study, uteroferrin has been cloned and functionally expressed using baculovirus-infected insect host cells Spodoptera frugiperda and the possible role of proteolytic cleavage to facilitate the release of uter oferrin-bound iron is addressed.

TL;DR: The chemistry of polynuclear oxometalate anions is dominated by molybdenum and tungsten in their highest oxidation state as discussed by the authors, and during the past twenty years this class of compounds has attracted much attention because of their variable applications, e.g. as reagents in analytical procedures, as industrial catalysts and as potential anticancer drugs.

Abstract: Using quasielastic neutron scattering, we have investigated the water dynamics of powders of the compound with the stoichiometry of [Mo72Fe30O252(CH3COO)12[Mo2O7(H2O)]2[H2 Mo2O8(H2O)](H2O)91]· ≈ 150H2O. It contains about 150 crystal water molecules in the voids between the spherical {Mo72Fe30} nanocapsules, which are considered unique polytropic inorganic acids with well-defined hydrophilic surfaces due to the presence of H2O and O atoms. It has been proposed that {Mo72Fe30} can be used as a structurally well-constrained experimental model of oxide mineral surfaces for earth scientists.(1) In this respect, it is of fundamental importance to understand the dynamics of the water molecules at the surface of the nanoclusters. Our measurements show that the dynamics of these water molecules is as expected profoundly different from that of bulk water at the same temperature, especially because of the strong hydrogen bonding between the crystal and cluster surface water molecules. In fact, our data show a non-De...