Abstract. Rate coefficients for the reaction of NO3 radicals with a series aromatic aldehydes were measured in 7300 L simulation chamber at ambient temperature and pressure by relative absolute methods. The rate benzaldehyde (BA), ortho-tolualdehyde (O-TA), meta-tolualdehyde (M-TA), para-tolualdehyde (P-TA), 2,4-dimethyl (2,4-DMBA), 2,5-dimethyl (2,5-DMBA) 3,5-dimethyl (3,5-DMBA) k1= 2.6 ± 0.3,...

There are two independent 3,5-dimethyl-pyrazole and two independent 2-hy-droxy-5-(phenyl-diazen-yl)benzoic acid mol-ecules [in which intra-molecular O-H⋯O bonds form S(6) graph-set motifs] in the asymmetric unit of the title compound, C(5)H(8)N(2)·C(13)H(10)N(2)O(3). In the crystal, the components are linked by inter-molecular O-H⋯O, O-H⋯N and N-H⋯O hydrogen bonds, forming four-component cluste...

The title compound, C21H23BrO3 [systematic name: (3E,3aS,6Z,9R,9aS,9bS)-3-(2-bromo-benzyl-idene)-9-hy-droxy-6,9-dimethyl-3,3a,4,5,7,8,9,9a-octa-hydro-azuleno[4,5-b]furan-2(9bH)-one] was prepared by the reaction of 1-bromo-2-iodo-benzene with micheliolide [systematic name: (3aS,R,9aS,9bS,Z)-9-hy-droxy-6,9-dimethyl-3-methyl-ene-3,3a,4,5,7,8,9,9a-octa-hydro-azuleno[4,5-b]furan-2(9bH)-one] under He...

New chiral S,N- and S,P-ligands starting from tert-butanesulfinamide were synthesized in four steps, applying Pd-catalyzed asymmetric allylic substitutions of dimethyl 2-fluoromalonate. The induced effect of the Pd/S,N-ligand catalyst on the enantioselectivity depends on the steric demand of the substituent at the o-position of the pyridine ring. This method produced monofluorinated allylation ...

Ice-binding protein (IBPs) protect cells from cryo-injury during cryopreservation by inhibiting ice recrystallization (IR), which is a main cause of cell death. In the present study, we employed two IBPs, one, designated LeIBP from Arctic yeast, and the other, designated FfIBP from Antarctic sea ice bacterium, in the cryopreservation of three economically valuable marine microalgae, Isochrysis ...

In the cation of the title compound, [Cd(CH(5)N(3)S)(2)(C(2)H(6)OS)(2)](C(6)H(2)N(3)O(7))(2)·2H(2)O, the Cd(II) atom is located on an inversion center. It is hexa-coordinated in an octahedral fashion by two thio-semicarbazide mol-ecules, which coordinate in a bidentate manner via the S and N atoms, and to the O atom of two dimethyl sufoxide (DMSO) mol-ecules. The charges are equilibrated by two...

The title compound, [Fe(C(24)H(21)O(4)S(2))(2)(C(5)H(5)N)(2)], has 2 symmetry. The Fe(II) cation is located on a twofold rotation axis and is O,O'-chelated by two 2-{5-[(2-carb-oxy-phen-yl)sulfanylmeth-yl]-2,4-dimethyl-benzyl-sulfan-yl}benzoate anions and further coordinated by two pyridine ligands in a distorted octa-hedral geometry. In the anion, the terminal benzene rings are oriented at dih...

Resonance Raman spectroscopy has been used to define active site structures for oxidized Mo(VI) and reduced Mo(IV) forms of recombinant Rhodobacter sphaeroides biotin sulfoxide reductase expressed in Escherichia coli. On the basis of (18)O/(16)O labeling studies involving water and the alternative substrate dimethyl sulfoxide and the close correspondence to the resonance Raman spectra previousl...