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Nobel Lecture: Quantum chemical models

John A. Pople
- 01 Oct 1999 - 
- Vol. 71, Iss: 5, pp 1267-1274
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TLDR
The fundamental underpinnings of theoretical chemistry were uncovered in a relatively short period at the beginning of the present century as mentioned in this paper, with the discovery of the nucleus in 1910 completed the identification of the constituent subparticles of atoms and molecules and was followed shortly thereafter by the Bohr treatment of electronic orbits in atoms.
Abstract
The fundamental underpinnings of theoretical chemistry were uncovered in a relatively short period at the beginning of the present century. Rutherford’s discovery of the nucleus in 1910 completed the identification of the constituent subparticles of atoms and molecules and was followed shortly thereafter by the Bohr treatment of electronic orbits in atoms, the ‘‘old quantum theory.’’ The relation between the positive nuclear charge, atomic number and position of an atom in the periodic table was uncovered by 1913. It proved difficult to extend Bohr’s orbits to a polyatomic situation and the next advance had to await the development of the wave theory of matter and the associated quantum mechanics in the early 1920s. By 1926, Heisenberg had developed matrix mechanics and Schrödinger had proposed the basic nonrelativistic wave equation governing the motion of nuclei and electrons in molecules. The latter,

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Journal ArticleDOI

Conceptual density functional theory.

TL;DR: This chapter discusses the development of DFT as a tool for Calculating Atomic andMolecular Properties and its applications, as well as some of the fundamental and Computational aspects.
Journal ArticleDOI

Advances in methods and algorithms in a modern quantum chemistry program package

TL;DR: Specific developments discussed include fast methods for density functional theory calculations, linear scaling evaluation of energies, NMR chemical shifts and electric properties, fast auxiliary basis function methods for correlated energies and gradients, equation-of-motion coupled cluster methods for ground and excited states, geminal wavefunctions, embedding methods and techniques for exploring potential energy surfaces.
Journal ArticleDOI

Advances in molecular quantum chemistry contained in the Q-Chem 4 program package

Yihan Shao, +156 more
- 17 Jan 2015 - 
TL;DR: A summary of the technical advances that are incorporated in the fourth major release of the Q-Chem quantum chemistry program is provided in this paper, covering approximately the last seven years, including developments in density functional theory and algorithms, nuclear magnetic resonance (NMR) property evaluation, coupled cluster and perturbation theories, methods for electronically excited and open-shell species, tools for treating extended environments, algorithms for walking on potential surfaces, analysis tools, energy and electron transfer modelling, parallel computing capabilities, and graphical user interfaces.
Journal ArticleDOI

Perspective on density functional theory

TL;DR: This perspective reviews some recent progress and ongoing challenges in density functional theory.
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Book

AB INITIO Molecular Orbital Theory

TL;DR: In this paper, the use of theoretical models as an alternative to experiment in making accurate predictions of chemical phenomena is discussed, and the formulation of theoretical molecular orbital models starting from quantum mechanics is discussed.
Journal ArticleDOI

Quantum Chemical Models (Nobel Lecture).

TL;DR: How far quantum chemistry has come in this respect is described here for the ab initio concept, which is known to just about every chemist under the name GAUSSIAN and can be used to define a way in which one can obtain more accurate results.
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