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Nikita Matsunaga

Researcher at Long Island University

Publications -  54
Citations -  20084

Nikita Matsunaga is an academic researcher from Long Island University. The author has contributed to research in topics: Ab initio & Ab initio quantum chemistry methods. The author has an hindex of 22, co-authored 54 publications receiving 19036 citations. Previous affiliations of Nikita Matsunaga include Cornell University & Iowa State University.

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General atomic and molecular electronic structure system

TL;DR: A description of the ab initio quantum chemistry package GAMESS, which can be treated with wave functions ranging from the simplest closed‐shell case up to a general MCSCF case, permitting calculations at the necessary level of sophistication.
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Main Group Effective Nuclear Charges for Spin-Orbit Calculations

TL;DR: In this article, the effective nuclear charges (Z.,ff), which are empirical parameters in an approximate spin-orbit Hamiltonian, are determined for main group elements in the second to fifth periods by using experimental results for the fine structure splittings (FSS) in II states of diatomic hydrides.
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Degenerate perturbation theory corrections for the vibrational self-consistent field approximation: Method and applications

TL;DR: In this paper, a new algorithm for computing anharmonic vibrational states for polyatomic molecules is proposed, which starts with the vibrational self-consistent field (VSCF) method and uses degenerate perturbation theory to correct for effects of correlation between different vibrational modes.
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Pauling's electronegativity equation and a new corollary accurately predict bond dissociation enthalpies and enhance current understanding of the nature of the chemical bond.

TL;DR: Pauling's original electronegativity equation describes quite accurately homolytic bond dissociation enthalpies of common covalent bonds, including highly polar ones, with an average deviation of +/-1.5 kcal mol(-1) from literature values for 117 such bonds.
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Symmetry and Geometry Considerations of Atom Transfer: Deoxygenation of (silox)3WNO and R3PO (R = Me, Ph, tBu) by (silox)3M (M = V, NbL (L = PMe3, 4-Picoline), Ta; silox = tBu3SiO)

TL;DR: Deoxygenation of substrates EO = 12 and (t)Bu(3)PO to attain a bent 90 degree angle M-O-E due to sterics explains their slow or negligible deoxygenations.