scholarly journals Erratum: “Sc2@C70 rather than Sc2C2@C68: Density functional theory characterization of metallofullerene Sc2C70” [J. Chem. Phys. 137, 014308 (2012)]

2012 ◽  
Vol 137 (21) ◽  
pp. 219901 ◽  
Author(s):  
Hong Zheng ◽  
Xiang Zhao ◽  
Wei-Wei Wang ◽  
Tao Yang ◽  
Shigeru Nagase
Keyword(s):  
Density Functional Theory ◽  
Density Functional ◽  
Chem Phys ◽  
Functional Theory

scholarly journals Влияние переходных металлов IIIВ-группы на формирование замкнутых германиевых кластеров: компьютерный эксперимент в рамках теории функционала плотности

2019 ◽  
Vol 21 (2) ◽  
pp. 182-190
Author(s):  
Nadezda A. Borshch ◽  
Sergey I. Kurganskii
Keyword(s):  
Density Functional Theory ◽  
Solid State ◽  
Electronic Properties ◽  
Magnetic Moment ◽  
Geometric Structure ◽  
Density Functional ◽  
Chem Phys ◽  
Silicon Clusters ◽  
Functional Theory ◽  
Doped Silicon

Представлены результаты моделирования пространственной структуры и электронных свойств кластеров MeGe16 - и MeGe20 - (Me = Sc, Y, Lu). Рассматривается возможность синтеза  пуллереноподобных кластеров и кластеров с другими типами замкнутых структур. Проведены сравнительные расчеты в рамках теории функционала плотности с использованием базиса SDD и трех различных потенциалов – B3LYP, B3PW91 и PBEPBE. Анализируется влияние выбора потенциала на результаты моделирования пространственной структуры кластеров и их электронного спектра. Оценка адекватности теоретических методов проводится путем сравнения рассчитанных электронных спектров с экспериментальными результатами по фотоэлектронной спектроскопии кластеров.     REFERENCES Kroto H. W., Heath J. R., O’Brien S. C., Curl R. F., Smalley R. E. C60: Buckminsterfullerene. Nature, 1985, v. 318, pp. 162-163. https://doi.org/10.1038/318162a0 Hiura H., Miyazaki, Kanayama T. Formation of Metal-Encapsulating Si Cage Clusters. Phys. Rev. Lett., 2001, v. 86, p. 1733. https://doi.org/10.1103/PhysRev-Lett.86.1733 Wang J., Han J. Geometries, stabilities, and electronic properties of different-sized ZrSin (n=1–16) clusters: A density-functional investigation. Chem. Phys., 2005, v. 123(6), pp. 064306–064321. https://doi.org/10.1063/1.1998887 Guo L.-J., Liu X., Zhao G.-F. Computational investigation of TiSin (n=2–15) clusters by the densityfunctional theory. Chem. Phys., 2007, v. 126(23), pp. 234704–234710.  https://doi.org/10.1063/1.2743412 Li J., Wang G., Yao C., Mu Y., Wan J., Han M. Structures and magnetic properties of SinMn (n=1–15) clusters. Chem. Phys., 2009, v. 130(16), pp. 164514–164522.  https://doi.org/10.1063/1.3123805 Borshch N. A., Berestnev K. S., Pereslavtseva N. S., Kurganskii S. I. Geometric structure and electron spectrum of YSi n− clusters (n = 6–17) Physics of the Solid State, 2014, v. 56(6), pp. 1276–1281. https://doi.org/10.1134/S1063783414060080 Borshch N., Kurganskii S. Geometric structure, electron-energy spectrum, and growth of anionic scandium-silicon clusters ScSin- (n = 6–20). Appl. Phys., 2014, v. 116(12), pp. 124302-1 – 124302-8. https://doi.org/10.1063/1.4896528 Borshch N. A., Pereslavtseva N. S., Kurganskii S. I. Spatial structure and electronic spectrum of TiSi n - Clusters (n = 6–18). Russian Journal of Physical Chemistry A, v. 88(10), pp. 1712–1718. https://doi.org/10.1134/S0036024414100070 Borshch N. A., Pereslavtseva N. S., Kurganskii S. I. Spatial and electronic structures of the germanium-tantalum clusters TaGe n − (n = 8–17). Physics of the Solid State, 2014, vol. 56(11), pp. 2336–2342. https://doi.org/10.1134/S1063783414110055 Huang X., Yang J. Probing structure, thermochemistry, electron affi nity, and magnetic moment of thulium-doped silicon clusters TmSi n (n = 3–10) and their anions with density functional theory. Mol. Model., 2018, v. 24(1), p. 29. https://doi.org/10.1007/s00894-017-3566-7 Zhang, Y., Yang, J., Cheng, L. J. Probing Structure, Thermochemistry, Electron Affi nity and Magnetic Moment of Erbium-Doped Silicon Clusters ErSin (n = 3–10) and Their Anions with Density Functional Theory. Sci., 2018, v. 29(2), pp. 301–311. https://doi.org/10.1007/s10876-018-1336-z Ye T., Luo C., Xu B., Zhang S., Song H., Li G. Probing the geometries and electronic properties of charged Zr2Si n q (n = 1–12, q = ±1) clusters. Chem., 2018, v. 29(1), pp. 139–146.  https://doi.org/10.1007/s11224-17-1011-2 Nguyen M.T., Tran Q. T., Tran V.T. A CASSCF/ CASPT2 investigation on electron detachments from ScSi n − (n = 4–6) clusters. Mol. Model., 2017, v. 23(10), p. 282. https://doi.org/10.1007/s00894-017-3461-2 Liu Y., Jucai Yang J., Cheng L. Structural Stability and Evolution of Scandium-Doped Silicon Clusters: Evolution of Linked to Encapsulated Structures and Its Infl uence on the Prediction of Electron Affi nities for ScSin (n = 4–16) Clusters. Chem., 2018, v. 57(20), pp 12934–12940. https://doi.org/10.1021/acs.inorgchem.8b02159

scholarly journals Self-consistent determination of the fictitious temperature in thermally-assisted-occupation density functional theory

RSC Advances ◽  
2017 ◽  
Vol 7 (80) ◽  
pp. 50496-50507 ◽  
Author(s):  
Chih-Ying Lin ◽  
Kerwin Hui ◽  
Jui-Hui Chung ◽  
Jeng-Da Chai
Keyword(s):  
Density Functional Theory ◽  
Density Functional ◽  
Chem Phys ◽  
Functional Theory ◽  
Self Consistent

We propose a self-consistent scheme for the determination of the fictitious temperature in thermally-assisted-occupation density functional theory (TAO-DFT) [J.-D. Chai, J. Chem. Phys., 2012, 136, 154104].

Density functional theory (DFT) calculations on the structures and stabilities of [CnO2n+1]2– and [CnO2n+1]X2 polycarbonates containing chainlike (CO2)n units (n = 2–6; X = H or Li)

2011 ◽  
Vol 89 (6) ◽  
pp. 671-687 ◽  
Author(s):  
Pablo J. Bruna ◽  
Friedrich Grein ◽  
Jack Passmore
Keyword(s):  
Density Functional Theory ◽  
Density Functional ◽  
Ion Pairs ◽  
Dicarboxylic Acids ◽  
Polarizable Continuum Model ◽  
Weakly Bound ◽  
Functional Theory ◽  
The Density Functional Theory ◽  
Weakly Bound Complexes

The structures and stabilities of chainlike (CO2)n (n = 2–6) polycarbonates, where adjacent C atoms are linked by C–O–C bonds, were investigated at the density functional theory (DFT) level (B3PW91/6–311G(2d,p)), including dicarboxylic dianions, [CnO2n+1]2–, and the corresponding acids, [CnO2n+1]H2, and Li salts, [CnO2n+1]Li2. At equilibrium, the most stable systems have Cs, C2, or C2v symmetries. In the gas phase, these dianions are generally metastable with respect to spontaneous ejection of one electron, yet in the presence of counterions they become stabilized, for example, as [CnO2n+1]2–(Li+)2 ion pairs. [CnO2n+1]2– linkages are also stabilized as dicarboxylic acids, [CnO2n+1]H2; we find the latter to have equilibrium conformations of higher symmetry than previously reported in the literature. To the best of our knowledge, none of the [CnO2n+1]X2 (X = Li or H) compounds with n ≥ 2 have been reported in the experimental literature (albeit, the alkyl esters C2O5R2 and C3O7R2 are commercially available). All CO bonds in C2O5X2 to C6O13X2 have single- to double-bond character (≈140–118 pm), indicating that the [CnO2n+1] moieties are held together by strong chemical forces (in contrast to the weakly bound complexes (CO2)n and (CO2)n–, n > 1). Vibrational frequencies were calculated to ensure all conformations were true minima. The IR and Raman intensities show that the high intensity C=O stretching modes (1750 ± 100 cm–1) will help in the spectral characterization of these compounds. Solvation calculations using the polarizable continuum model (PCM) find that C2O52– can be formed via CO32– + CO2 as well as CO3–[Formula: see text], each reaction having ΔG298 < 0 in practically all solvents. This result confirms the experimentally observed large solubility of CO2(g) in molten carbonates, CO3M2 (M = Li, Na, or K). In contrast, starting with n = 2, the reactions [CnO2n+1]2– + CO2 do not proceed spontaneously in any solvent (ΔG298 > 0).

Computational characterization of sodium selenite using density functional theory

2010 ◽  
Vol 17 (4) ◽  
pp. 701-708
Author(s):  
Diana Barraza-Jiménez ◽  
Manuel Alberto Flores-Hidalgo ◽  
Donald H. Galvan ◽  
Esteban Sánchez ◽  
Daniel Glossman-Mitnik
Keyword(s):  
Density Functional Theory ◽  
Sodium Selenite ◽  
Density Functional ◽  
Functional Theory

P—N Bond Length Alterations Monitored by Infrared Absorption and Fourier Transform Raman Spectroscopy in Combination with Density Functional Theory Calculations

2003 ◽  
Vol 57 (8) ◽  
pp. 970-976 ◽  
Author(s):  
M. Bolboaca ◽  
T. Stey ◽  
A. Murso ◽  
D. Stalke ◽  
W. Kiefer
Keyword(s):  
Density Functional Theory ◽  
Fourier Transform ◽  
Density Functional ◽  
Structural Parameters ◽  
Density Functional Theory Calculations ◽  
Functional Theory ◽  
Fourier Transform Raman Spectroscopy ◽  
Raman And Infrared Spectroscopy ◽  
Fourier Transform Raman

Fourier transform (FT) Raman and infrared spectroscopy in combination with density functional theory calculations have been applied to the vibrational characterization of the dimeric zinc diphenylphosphanyl(trimethylsilyl)amide complex [(Me3Si)2NZnPh2PNSiMe3]2 and the ortho-metallated species [Li( o-C6H4PPh2NSiMe3)]2·Et2O in relation to their parent starting materials diphenylphosphanyl (trimethylsilyl)amine Ph2P–N(H)SiMe3 and iminophosphorane Ph3P=NSiMe3. The spectroscopic changes evidenced in the spectra were correlated with the structural parameters in order to provide insight as to what extent the P–N bond is affected by the coordination to the metal center. The employment of density functional theory (DFT) calculations in addition to these spectroscopic methods offers the possibility of predicting whether the Lewis-basic imido nitrogen atom is involved in coordination not only in the solid state, but also in the gas phase.

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