نتایج جستجو برای: pbe0

تعداد نتایج: 237  

Journal: :Dalton transactions 2015
J Oscar C Jimenez-Halla Eduard Matito Miquel Solà Holger Braunschweig Christian Hörl Ivo Krummenacher Johannes Wahler

In this contribution, we have evaluated the (anti)aromatic character of thirty-four different borole compounds in their neutral and reduced states based on two aromaticity indices, namely nucleus-independent chemical shift (NICS) and multicenter indices (MCI), calculated at the PBE0/6-31+G(d,p) level of theory. Both indices corroborate the notion that neutral borole compounds are antiaromatic a...

Journal: :The journal of physical chemistry. B 2011
Cui Zhang Leonardo Spanu Giulia Galli

We have computed the entropy of liquid water using a two-phase thermodynamic model and trajectories generated by ab initio molecular dynamics simulations. We present the results obtained with semilocal, hybrid, and van der Waals density functionals. We show that in all cases, at the experimental equilibrium density and at temperatures in the vicinity of 300 K, the computed entropies are underes...

Journal: :Physical chemistry chemical physics : PCCP 2011
Paweł Tecmer André Severo Pereira Gomes Ulf Ekström Lucas Visscher

The performance of the time-dependent density functional theory (TDDFT) approach has been evaluated for the electronic spectrum of the UO(2)(2+), NUO(+) and NUN molecules. Different exchange-correlation functionals (LDA, PBE, BLYP, B3LYP, PBE0, M06, M06-L, M06-2X, CAM-B3LYP) and the SAOP model potential have been investigated, as has the relative importance of the adiabatic local density approx...

Journal: :Physical chemistry chemical physics : PCCP 2015
Luigi Cigarini Davide Vanossi Federica Bondioli Claudio Fontanesi

The dynamics of the early stage reaction between benzyl alcohol and Fe(acetylacetonate)3 is studied by exploiting the Dynamic Reaction Coordinate (DRC) approach, at the PBE0/6-31G* level of theory. Analysis of the DRC trajectory provides a detailed molecular insight into the catalytic effect observed in the acidic reaction environment, compared to the neutral one. The presence of an additional ...

2015
Glenna So Ming Tong Kaai Tung Chan Xiaoyong Chang Chi-Ming Che

1. Experimental Details. a. Synthesis b. Characterizations c. X-ray data, and d. Spectroscopic properties 2. Computational Details a. State specific calculation procedures b. Radiative decay rate calculations c. Non-radiative decay rate calculations d. Further references 3. Further calculation results a. TDDFT results at the optimized S0 geometries b. Radiative decay rate calculations c. Non-ra...

پایان نامه :وزارت علوم، تحقیقات و فناوری - پژوهشگاه شیمی و مهندسی شیمی ایران 1393

در این کار مطالعات نظری تابعی چگال به منظور بررسی ساختار الکترونی و پایداری خوشه های کوچک فلزی طلا، نقره و مس انجام شده است. روش های تابعی چگال قادرند در مدت زمان کوتاه، با دقت قابل قبولی محاسبات را انجام دهند. روش های دقیق تر به زمان محاسبات بیشتری نیازمندند. هدف این رساله یافتن یک روش تابعی چگال مناسب برای بررسی خوشه های بزرگ فلزی می باشد. بدین منظور ما ابتدا ترکیبات دو اتمی این فلزات را به ع...

Journal: :Physical chemistry chemical physics : PCCP 2015
Jan Vícha Jan Novotný Michal Straka Michal Repisky Kenneth Ruud Stanislav Komorovsky Radek Marek

The role of various factors (structure, solvent, and relativistic treatment) was evaluated for square-planar 4d and 5d transition-metal complexes. The DFT method for calculating the structures was calibrated using a cluster approach and compared to X-ray geometries, with the PBE0 functional (def2-TZVPP basis set) providing the best results, followed closely by the hybrid TPSSH and the MN12SX fu...

Journal: :European Journal of Inorganic Chemistry 2023

The reaction of [RuCl2(CO)3]2 and Te2Tpn2 (Tpn=thiophen-2-yl, C4H3S) in the absence light resulted formation cct-[RuCl2(CO)2(TeTpn2)2] (1) [cis(Cl)-cis(CO)-trans(TeTpn2)] TeTpn2 (2) together with precipitation tellurium. complex 1 monotelluride 2 were characterized by NMR spectroscopy single-crystal X-ray diffraction. decomposition to has been monitored 125Te seemed be faster than ligand substi...

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