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B3LYP |
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Computational methods Functional calculations of quantum chemical density were carried out with the 03 version of a Gaussian suite of programs (17) using the B3LYP functions (18), (19) combined with the standard 6-31g(d), 6-31 + g(d,p), and 6-311 + g(3df,2pd) basis seta. Another approach would be to use a semiempirical hybrid functional like B3LYP (17), (18) which is seen to work well in solid-state calculations for modeling the band gap (19), but density functional theory (DFT) is notorious for underestimating the band gap sometimes by a factor 2 or more (16), particularly for molecular systems, although DFT is excellent for estimating total energies in systems similar to PMVC (20). B3LYP calculated interaction energies predict low energy conformations for complex systems of perfluorinated fatty acid interactions with cysteine, methionine, and tripeptides consisting of one of either sulfur containing amino acid with glycine end sites. |
B3LYP |
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