Zobrazeno 1 - 10
of 31
pro vyhledávání: '"Lawrence T. Sein"'
Autor:
Sarajane E. Sein, Lawrence T. Sein
Publikováno v:
Journal of Chemical Education. 92:1419-1421
A system for the construction of double-sided paper models of the 14 Bravais lattices, and important crystal structures derived from them, is described. The system allows the combination of multiple unit cells, so as to better represent the overall t
Autor:
Lawrence T. Sein, Lakeisha L. Packer
Publikováno v:
Journal of Molecular Structure. 1026:108-116
Quantum mechanical density functional theory (DFT) calculations are reported for novel, self-assembled transition metal linked dimers of N , N ′-bis (3′-carboxy,4′-aminophenyl)-1,4-quinonediimine, with the metals manganese, iron, cobalt, nickel
Publikováno v:
Journal of Molecular Structure. 1004:319-328
Density functional calculations were performed on N , N ′-bis(5′-benzimidazolyl)-1,4-quinonediimine, a novel substituted aniline “trimer”. This is the first reported symmetric quinonediimine with outer rings derived from amino-acid related st
Autor:
Lawrence T. Sein
Publikováno v:
Journal of Molecular Structure. 1000:109-119
Hammett parameters σ ′ were determined from vertical ionization potentials, vertical electron affinities, adiabatic ionization potentials, adiabatic electron affinities, HOMO, and LUMO energies of a series of N , N ′ - bis (3′,4′-substituted
Autor:
Lawrence T. Sein, Justine M. Pagillo
Publikováno v:
Journal of Molecular Structure. 985:299-306
Density functional calculations were performed on N,N ′-bis (2′,4′-dihydroxyphenyl)-1.4-quinonediimine, a hydroxyl-terminated quinonediimine with an additional meta-hydroxyl substituent on each outer ring. Results of the calculations were compa
Autor:
Amanda F. Lashua, Lawrence T. Sein
Publikováno v:
Journal of Molecular Structure. 977:220-229
Density functional calculations were performed on N , N ′-bis(3′-carboxy,4′-aminophenyl)-1,4-quinonediimine, a carboxylic acid substituted aniline trimer. Results of the calculations were compared to experimental properties of the herein synthe
Autor:
Amanda F. Lashua, Lawrence T. Sein
Publikováno v:
Synthetic Metals. 159:1183-1190
The variant aniline trimers, N,N′-bis (3′,4′-diaminophenyl)-1,4-quinonediimine; N,N′-bis (3′-hydroxy-,4′-aminophenyl)-1,4-quinonediimine; and N,N′-bis (3′,4′-dihydroxyphenyl)-1,4-quinonediimine were synthesized, and the properties o
Autor:
Lawrence T. Sein
Publikováno v:
The Journal of Physical Chemistry A. 112:2598-2603
Quantum mechanical density functional theory (DFT) calculations are reported for N,N'-bis(4'-hydroxyphenyl)-1,4-quinonediimine [henceforth referred to as the hydroxyl terminated trimer], a derivative of previously investigated aniline trimers. Calcul
Publikováno v:
Synthetic Metals. 143:1-12
Prototype materials based on aniline oligomers have been shown to inhibit corrosion. The electronic behavior of these aniline trimers parallels that of polyaniline (PAni), but the oligomers are a much more tractable system for analysis. The anti-corr
Publikováno v:
Journal of Molecular Structure: THEOCHEM. 577:35-42
Density functional theory (DFT) calculations are used to investigate the conformational distribution and electronic structure of a hydroxy-substituted aniline trimer. The computations are validated by comparison of the theoretically predicted electro