The asymmetric unit of the title compound, C(19)H(16)O(3), contains three independent conformers. Each of the three conformers has essentially the same feature of non-coplanar aromatic rings whereby the aroyl group at the 1-position of the naphthalene ring is twisted in a perpendicular manner to the naphthalene ring. The dihedral angles between the benzene ring planes and the naphthalene ring s...

( 1 ) O to the least-squares plane of the acac ring. Bond distance between the CY and P carbons of the naphthalene ring are shorter than the P-P bonds observed in other naphthalene derivatives. lo The naphthalene ring inclines slightly as the benzo group approaches N(2), and their dihedral angle is 87.6 (1)' to the least-squares plane of the acac ring. Since the inclination of the aromatic ring...

Knowledge of transport and degradation of polycyclic aromatic hydrocarbons (PAHs) is important in assessing PAH contamination of soils and water resources. The transport of naphthalene, anthracene, pyrene and phenanthrene was determined in a contaminated calcareous soil obtained from the Shadegan wetland (Khozestan, Iran) considering a column study in laboratory conditions. The PAHs were added ...

One strain of bacteria, designated NCE312, was isolated from a naphthalene-digesting chemostat culture that was inoculated with creosote-contaminated marine sediment. The strain was isolated based on its ability to grow using naphthalene as a sole carbon source. In addition, the strain degraded 2-methylnaphthalene and 1-methylnaphthalene. Analysis of a 16S rRNA gene sequence from NCE312 placed ...

Raman and FTIR spectra of naphthalene and its cation have been systematically analyzed using ab-initio and density functional theory calculations. The optimized geometries, harmonic vibrational wave numbers and intensity of vibrational bands of naphthalene and its cation were calculated invoking different basis sets up to HF/6-311++G** and B3LYP/6311++G** level. Vibrational assignments have bee...

Surfactant-enhanced remediation technology has shown promising potential for removing residual organics from contaminated soils and groundwater. Using a homologous series of cationic surfactants, alkylpyridinium bromide, it was found that the molar solubilization ratio (MSR) for naphthalene decreases with decreasing carbon number in the hydrophobic tail. In contrast, with nonylphenyl ethoxylate...

Silyl-substituted naphthalene derivatives at the 1- and 1,4-positions were synthesized and their UV absorption, fluorescence spectroscopic properties, and fluorescence lifetimes were determined. Analysis of the results shows that the introduction of silyl groups at these positions of the naphthalene chromophore/fluorophore causes shifts of the absorption maxima to longer wavelengths and increas...

In the title compound, C28H24O6·CHCl3, the two 4-meth-oxy-benzoyl groups at the 1- and 8-positions of the naphthalene ring system are aligned almost anti-parallel, the benzene rings making a dihedral angle of 25.76 (7)°. The naphthalene ring system makes dihedral angles of 72.51 (7) and 73.33 (7)° with the benzene rings. In the crystal, the naphthalene mol-ecules are linked by C-H⋯O inter-actio...

We have previously reported on anaerobic pure cultures that degrade naphthalene in the strict absence of oxygen. One of these pure cultures NAP-3 was phylogenetically most closely related to Pseudomonas stutzeri based on 16S rDNA sequences. Further studies in our laboratory have shown that the degradation of naphthalene was slow or nearly absent when volatile fatty acids (VFAs) were not present...