DFT studies on the structural and vibrational properties of polyenes.

abstract：:DFT computations were carried out to characterize the (17)Oand (2)H electric field gradient, EFG, in various bisphosphonate derivatives. The computations were performed at the B3LYP level with 6-311++G (d,P) standard basis set. Calculated EFG tensors were used to determine the (17)O and (2)H nuclear quadrupole couplin...

journal_title：Journal of molecular modeling

authors： Aghabozorg H,Sohrabi B,Mashkouri S,Aghabozorg HR

更新日期：2012-03-01 00:00:00

abstract：:The geometries of three isomers of the C2H4O...2HF tri-molecular heterocyclic hydrogen-bonded complex were examined through B3LYP/aug-cc-pVDZ calculations. Analysis of structural parameters, determination of CHELPG (charge electrostatic potential grid) intermolecular charge transfer, interpretation of infrared stretch...

journal_title：Journal of molecular modeling

authors： de Oliveira BG,Araújo RC,Chagas FF,Carvalho AB,Ramos MN

更新日期：2008-10-01 00:00:00

abstract：:Electronic properties of Fe(2-10) clusters and their ions are described by an all-electron ab initio density functional theory computational analysis using the Handy's OPTX exchange and the gradient-corrected correlation functional of Perdew, Burke and Ernzerhof with a triple-zeta valence basis set plus polarization f...

journal_title：Journal of molecular modeling

authors： Cervantes-Salguero K,Seminario JM

更新日期：2012-09-01 00:00:00

abstract：:The interaction between tetramethylcucurbit[6]uril (host) and 5,5'-dimethyl-2,2'-bipyridyl hydrochloride (guest) was studied by 1H NMR, X-ray crystallography, electronic absorption spectroscopy, fluorescence emission spectra and quantum chemistry calculations. This experimental-computational study that indicated the h...

journal_title：Journal of molecular modeling

authors： Cong H,Zhao YJ,Xue SF,Tao Z,Zhu QJ

更新日期：2007-12-01 00:00:00

abstract：:Tautomerism in monomers/dimers and association of 2,5-dihydroxy-1,8-naphthyridine was studied at the DFT level recently recommended for studies of non-covalent interactions. Studied dimers are stabilized by double and triple hydrogen-bonding. In some associates the intermolecular proton transfer may take place. Transi...

journal_title：Journal of molecular modeling

authors： Ośmiałowski B

更新日期：2012-04-01 00:00:00

abstract：:Three potential anticancer agents {trans-[PtCl(2)(NH(3))(thiazole)], cis-[PtCl(2)(NH(3))(piperidine)], and PtCl(2)(NH(3))(cyclohexylamine) (JM118)} were explored and compared with cisplatin and the inactive [PtCl(dien)](+) complex. Basic electronic properties, bonding and stabilization energies were determined, and th...

journal_title：Journal of molecular modeling

authors： Bradác O,Zimmermann T,Burda JV

更新日期：2008-08-01 00:00:00

abstract：:In order to introduce effectively the external electric fields into the explosive systems, the change trends of the strengths of trigger linkages, nitro group charges, and explosive sensitivities of 1,4-dinitroimidazole-N-oxide (1,4-DNIO) were investigated in the external electric fields at the B3LYP/6-311++G(2d,p) an...

journal_title：Journal of molecular modeling

authors： Wang BG,Ren FD,Wang Y

更新日期：2019-11-28 00:00:00

abstract：:Periodic first-principles calculations have been performed to study the effect of high pressure on the geometric, electronic, and absorption properties of 2,6-diamino-3,5-dinitropyrazine-1-oxide (LLM-105) under hydrostatic pressures of 0-50 GPa. Obvious irregular changes in lattice constants, unit-cell angles, bond le...

journal_title：Journal of molecular modeling

authors： Wu Q,Yang C,Pan Y,Xiang F,Liu Z,Zhu W,Xiao H

更新日期：2013-12-01 00:00:00

abstract：:Selective poly (ADP-ribose) polymerase (PARP)-1 inhibitor represents promising therapy against cancers with a good balance between efficacy and safety. Owing to the conserved structure between PARP-1 and PARP-2, most of the clinical and experimental drugs show equivalent inhibition against both targets. Most recently,...

journal_title：Journal of molecular modeling

authors： Cao R

更新日期：2016-04-01 00:00:00

abstract：:In this work we present the results of a study of the X-ray structure of 2-[(2,4-dimethoxyphenyl)amino]-1,3-thiazolidin-4-one. Using the FTIR spectra in solid state and results of ab initio calculations we explain the issue of the tautomerism of this molecule. The compound is shown to exist as the 2-amino tautomer rat...

journal_title：Journal of molecular modeling

authors： Nowaczyk A,Kowiel M,Gzella A,Fijałkowski L,Horishny V,Lesyk R

更新日期：2014-08-01 00:00:00

abstract：:Multi-tetrazole derivatives with conjugated structures were designed and investigated in this study. Using quantum chemistry methods, the crystal structures, electrostatic potentials (ESPs), multicenter bond orders, HOMO-LUMO energy gaps, and detonation properties of the derivatives were calculated. As expected, these...

journal_title：Journal of molecular modeling

authors： Sun S,Lu M

更新日期：2018-06-23 00:00:00

abstract：:The addition of C2 to HCN is of relevant interest in astrochemistry. We studied the pathways of this addition to produce CCCN and estimated its reaction rate using the Master Equation in the circumstellar environment. From the results of this study, it was possible to show that a different pathway in the Surface Poten...

journal_title：Journal of molecular modeling

authors： da Silva WB,Albernaz AF,Barreto PR,Correa E

更新日期：2017-04-01 00:00:00

abstract：:Realistic molecular models of one and two-centre catalytic active sites originating from the cleavage of a precursor material known to give rise to an active double metal cyanide catalyst are described. Via periodic density functional calculations the structure of the proposed catalytic sites are shown to be dependent...

journal_title：Journal of molecular modeling

authors： Wojdeł JC,Bromley ST,Illas F,Jansen JC

更新日期：2007-07-01 00:00:00

abstract：:We perform density functional theory studies to investigate structural and electronic properties of the (5,5) boron nitride nanotubes (BNNTs) with surfaces and ends functionalized by thiol (SH) and hydroxyl (OH) groups. The exchange-correlation energies are treated according to the functional of Hamprecht-Cohen-Tozer-...

journal_title：Journal of molecular modeling

authors： Chigo Anota E,Cocoletzi GH

更新日期：2013-06-01 00:00:00

abstract：:The formation of selenium species in some biological processes involves the generation of ionic and radical intermediates such as RSe●, RSe-, RSeO●, and RSeO-, among others. We performed a theoretical study of the possible mechanisms for the reaction of the two simplest Se radicals-the hydroselenyl (HSe●) and seleneni...

journal_title：Journal of molecular modeling

authors： Vega-Teijido MA,Kieninger M,Ventura ON

更新日期：2017-12-05 00:00:00

abstract：:A molecular dynamics method was employed to study the binding energies associated with the cocrystallization (at selected crystal planes) of either 1,3,5-triamino-2,4,6-trinitro-benzene (TATB), 1,1-diamino-2,2-dinitroethylene, 3-nitro-1,2,4-triazol-5-one (TATB, FOX-7, and NTO, respectively, all of which are explosives...

journal_title：Journal of molecular modeling

authors： Song KP,Ren FD,Zhang SH,Shi WJ

更新日期：2016-10-01 00:00:00

abstract：:Hyaluronan lyase from Streptococcus pneumoniae can degrade hyaluronic acid, which is one of the major components in the extracellular matrix. Hyaluronan can regulate water balance, osmotic pressure, and act as an ion exchange resin. Followed by our recent work on the catalytic reaction mechanism and substrate binding ...

journal_title：Journal of molecular modeling

authors： Li F,Xu D

更新日期：2015-08-01 00:00:00

abstract：:The contribution of folic acid (FA)-tryptophan interactions to FA-protein association was investigated in the context of using FA as a drug carrier in protein delivery systems. Bovine serum albumin (BSA) and indolicidin were used as model proteins in the study. The FA-BSA complex was characterized by using the Bradfor...

journal_title：Journal of molecular modeling

authors： Gupta R,Kalita P,Patil O,Mohanty S

更新日期：2015-12-01 00:00:00

abstract：:White spot disease caused by the white spot syndrome virus (WSSV) incurs a huge loss to the shrimp farming industry. Since no effective therapeutic measures are available, early detection and prevention of the disease are indispensable. Towards this goal, we previously identified a 12-mer phage displayed peptide (desi...

journal_title：Journal of molecular modeling

authors： Jamalpure S,Panditrao G,Kulabhusan PK,Hameed ASS,Paknikar KM,Joshi M,Rajwade JM

更新日期：2020-09-10 00:00:00

abstract：:Leishmaniasis is an endemic disease caused by infection with one of several different species of protozoan parasite Leishmania. Oligopeptidase B (OPB) is a serine peptidase which plays a vital role in survival of the Leishmania parasite in the host (human) macrophage and help in attaining complete virulence. Inhibitio...

journal_title：Journal of molecular modeling

authors： Goyal S,Grover S,Dhanjal JK,Goyal M,Tyagi C,Chacko S,Grover A

更新日期：2014-03-01 00:00:00

abstract：:The heme-AB binding energies (AB = CO, O2) in a wild-type myoglobin (Mb) and two mutants (H64L, V68N) of Mb have been investigated in detail with both DFT and dispersion-corrected DFT methods, where H64L and V68N represent two different, opposite situations. Several dispersion correction approaches were tested in the ...

journal_title：Journal of molecular modeling

authors： Liao MS,Huang MJ,Watts JD

更新日期：2013-08-01 00:00:00

abstract：:In the absence of interlogs, building docking models is a time intensive task, involving generation of a large pool of docking decoys followed by refinement and screening to identify near native docking solutions. This limits the researcher interested in building docking methods with the choice of benchmarking only a ...

journal_title：Journal of molecular modeling

authors： Mitra P,Pal D

更新日期：2011-03-01 00:00:00

abstract：:The Schiff base compound, 2-[(4-Fluorophenylimino)methyl]-3,5-dimethoxyphenol, has been synthesized and characterized by IR, electronic spectroscopy, and X-ray single-crystal determination. Molecular geometry from X-ray experiment of the title compound in the ground state have been compared using the Hartree-Fock (HF)...

journal_title：Journal of molecular modeling

authors： Tanak H,Ağar A,Yavuz M

更新日期：2010-03-01 00:00:00

abstract：:The Z-DNA-binding domain of human double-stranded RNA adenosine deaminase I (hZαADAR1) can specifically recognize the left-handed Z-DNA which preferentially occurs at alternating purine-pyrimidine repeats, especially the CG-repeats. The interactions of hZαADAR1 and Z-DNAs in different sequence contexts can affect many...

journal_title：Journal of molecular modeling

authors： Wang Q,Li L,Wang X,Liu H,Yao X

更新日期：2014-11-01 00:00:00

abstract：:Quasi-classical trajectory calculations were performed to investigate the stereodynamics of the reaction H(²S) + ClO(²Π) → HO(²Π) + Cl(²P) using the ground-state potential energy surface 1¹A'. The alignment and orientation of the product molecules as well as the four polarization-dependent differential cross-sections ...

journal_title：Journal of molecular modeling

authors： Huang Y

更新日期：2014-03-01 00:00:00

abstract：:We tested different approaches to including the effect of binding-site water molecules for ligand-binding affinities within the MM/GBSA approach (molecular mechanics combined with generalised Born and surface-area solvation). As a test case, we studied the binding of nine phenol analogues to ferritin. The effect of wa...

journal_title：Journal of molecular modeling

authors： Mikulskis P,Genheden S,Ryde U

更新日期：2014-06-01 00:00:00

abstract：:The structures of the N-(hydroxymethyl)acetamide (model molecule of ceramide) dimers have been fully optimized at B3LYP/6-311++G** level. The intermolecular hydrogen bonding interaction energies have been calculated using the B3LYP/6-311++G**, B3LYP/6-311++G(2df,2p), MP2(full)/6-311++G** and MP2(full)/6-311++G(2df,2p)...

journal_title：Journal of molecular modeling

authors： Tang HF,Zhong H,Zhang LL,Gong MX,Song SQ,Tian QP

更新日期：2018-05-31 00:00:00

abstract：:A series of no-chlorine and oxygen-rich hydrazine derivatives (hydrazine modified with -NO₂ and NO₃(-) groups) was designed and optimized to obtain molecular geometries and electronic structures at density functional theory-B3PW91/6-311++G(3df,3pd) level. Some important properties such as bond dissociation enthalpy, d...

journal_title：Journal of molecular modeling

authors： Wang PC,Zhu ZS,Xu J,Zhao XJ,Lu M

更新日期：2013-06-01 00:00:00

abstract：:A first-principles calculation was carried out to investigate the stability and electronic properties of ultra-thin Cx(BN)y heteronanotubes which were composed by joining pure CNT and BNNT segments with different composition and configurations. We found that the stability of Cx(BN)y heteronanotubes is increased with t...

journal_title：Journal of molecular modeling

authors： Wang Y,Huang G,Zhang J,Shao Q

更新日期：2014-08-01 00:00:00

abstract：:The binding of the reductase inhibitor drug fluvastatin, hydroxy-3-methylglutaryl coenzyme A, with the hydrophilic ι- or λ-carrageenan polymers, serving as potential controllers of the drug's release rate, have been studied at the density functional level of theory with the B3LYP exchange correlation functional. Three...

journal_title：Journal of molecular modeling

authors： Papadopoulos AG,Sigalas MP

更新日期：2011-07-01 00:00:00