In the title compound, C(27)H(21)NO, the piperidine ring adopts a chair conformation. The mean plane through the piperidine ring makes dihedral angles of 49.27 (5) and 63.07 (5)° with the naphthalene ring systems. In the crystal, mol-ecules are linked into dimers via pairs of inter-molecular C-H⋯O inter-actions, generating ten-membered R(2) (2)(10) ring motifs. C-H⋯π inter-actions further stabi...

The cycloadducts of tethered naphthalene and anthracene derivatives undergo photochemical ring opening to an electronically excited product with adiabatic yields up to 90%.

In the title compound, C(12)H(10)O(2), the aldehyde and meth-oxy groups are slightly twisted around the single bonds that join them to the naphthalene ring system. In the crystal structure, mol-ecules are linked through inter-molecular C-H⋯O hydrogen bonds, forming chains running along the c axis.

To overcome the limitations of the traditional state-averaging approaches in excited state calculations, where one solves and represents all states between the ground state and excited state of interest, we have investigated a number of new excited state algorithms. Building on the work of van der Vorst and Sleijpen [SIAM J. Matrix Anal. Appl. 17, 401 (1996)], we have implemented harmonic David...

The authors attempted to determine if the organic sulfur compounds usually contained in a crude oil could serve as a marker of oil pollution in fish. Eels (Anguilla Japonica Temminck et Schlegel) were maintained in a controlled laboratory environment of water with a suspension of crude oil. Gas chromatography-mass spectrometry and mass chromatography of eel flesh extract showed the presence of ...

Fifteen strains of polycyclic aromatic hydrocarbon (PAH)-catabolizing bacteria, identified as Pseudoalteromonas spp. were isolated from Eagle Harbor, Puget Sound, USA, using a most probable number procedure in which naphthalene or phenanthrene was the sole carbon and energy source. Despite having identical 16S rDNA sequences, some catabolized many PAHs, whereas others oxidized only naphthalenes...

A combination of charge density studies and solid state nuclear magnetic resonance (NMR) 1JNC coupling measurements supported by periodic functional theory (DFT) calculations is used to characterise the transition from an n–π* interaction bond formation between a nucleophilic nitrogen atom electrophilic sp2 carbon in series crystalline peri-substituted naphthalenes. As N⋅⋅⋅C distance reduces th...

This research aimed to examine the upgrading of sisal residue bio-oil from relations between process conditions fast pyrolysis and properties fluid. The was produced in a pilot unit with fluidized bed reactor by varying nitrogen flow rate, biomass mass flow, temperature, pressure. Overall, composition intensely dependent on parameters. pressure at lowest value best condition for obtaining high ...

Syntheses of heteroleptic 1,8-bis(phosphino)naphthalenes and 5,6-bis(phosphino)acenaphthenes were attempted using several synthetic strategies. Reaction of aryllithium with triphenylphosphite gave ArP(OPh)(2) (Ar = substituted naphthalene or acenaphthene), which was transformed into ArP(CF(3))(2), using a nucleophilic trifluoromethylation reaction with Me(3)SiCF(3)/CsF. The importance of the co...