Protonated and deprotonated adipic acids (PAA: HOOC-(CH2)(4)-COOH2+ and DAA: HOOC-(CH2)(4)-COO-) have a charged hydrogen bond under the influence of steric constraint due to the molecular skeleton of a circular ring. Des...
Herein we analyze the accessibility of the trigonal-prismatic geometry to metal complexes with different electron configurations, as well as the ability of several hexadentate ligands to favor that coordination polyhedro...
Although DFT calculations have provided a first-order electronic-structural description for Roussin's red and black salts, a detailed study of spin coupling in these species has yet to be reported. Such an analysis is pr...
Recombinant antifreeze proteins (AFPs), representing a range of activities with respect to ice growth inhibition, were investigated for their abilities to control the crystal formation and growth of hydrocarbon hydrates....
Diaryliodonium salts allow the efficient incorporation of cyclotron-produced [F-18]fluoride ions into electron-rich and electron-deficient arenes to provide potential radiotracers for molecular imaging in vivo with posit...
Metal and ligand hyperfine couplings of a previously suggested, energetically feasible Mn4Ca model cluster (SG2009(-1)) for the S, state of the oxygen-evolving complex (OEC) of photosystem II (PSII) have been studied by ...
The use of a water-soluble octacationic bis-calix[4]arene with divergent cavities (BC4) as a templating agent for the assembly of a tetraanionic porphyrin (CuTPPS) has allowed the noncovalent synthesis of 2D or 3D multip...
We report the synthesis of monodisperse, spherical periodic mesoporous organosilica (PMO) materials. The particles have diameters between about 350 and 550 rim. They exhibit a regular core-shell structure with a solid, n...
2,4-Diamino-6-pheny1-1,3,5-triazines carrying one or two semiper-fluorinated chains at the phenyl substituent have been investigated in binary mixtures with partially fluorinated benzoic acids by polarizing microscopy, d...
This contribution describes the development and demonstration of the ambient-temperature, high-speed living polymerization of polar vinyl monomers (M) with a low silylium catalyst loading (<= 0.05 mol (X) relative to M)....
1,4-Addition of bis(iodozincio)methane to simple alpha,beta-unsaturated ketones does not proceed well; the reaction is slightly endothermic according to DFT calculations. In the presence of chlorotrimethylsilane, the rea...
We report the synthesis of the novel heterometallic complex [Fe3Cr(L)(2)(dpm)(6)]center dot Et2O (Fe3CrPh) (Hdpm = dipivaloylmethane, H3L = 2-hydroxymethyl-2-phenylpropane-1,3-diol), obtained by replacing the central iro...
[Fe-III(F-20-tpp)Cl] (F-20-tpp = meso-tetrakis(pentafluorophenyl)porphyrinato dianion) is an effective catalyst for imido/nitrene insertion reactions using sulfonyl and aryl azides as nitrogen source. Under thermal condi...
A new tandem catalytic process has been studied for a heterodimetallic complex containing both iridium and palladium fragments connected by a 1,2,4-trimethyltriazolyldiylidene ligand. The process implies the unprecedente...
Starting from the readily available alpha,beta-unsaturated ketone, 3-tert-butyl-4,4-dimethyl-2-pentenal, higher vinylogues, and fully terminally tert-butylated polyolefins with up to 13 consecutive conjugated double bond...
Development of the total syntheses of arylomycins A(1) and B-2 is detailed. Key features of our approach include 1) formation of 14-membered meta,meta-cyclophane by an intramolecular Suzuki-Miyaura reaction; 2) incorpora...