Zobrazeno 1 - 10
of 94
pro vyhledávání: '"D. B. Chesnut"'
Publikováno v:
The Journal of Physical Chemistry A. 113:8677-8682
The weak S1-S3 bonds in the OSSSO trans-disulfoxide and the corresponding sulfone, O(2)SSSO(2), are readdressed at the B3LYP/6-31+G(d) level using both the atoms-in-molecules (AIM) and the electron localization function (ELF) approaches. The S1-S3 bo
Autor:
D. B. Chesnut, Louis D. Quin
Publikováno v:
Heteroatom Chemistry. 18:754-758
Calculations on phosphole systems using the G3MP2B3 model chemistry show that the phosphorus lone pair is critical to the system's aromaticity. Protonation of the lone pair results in antiaromatic molecules as measured by homomolecular homodesmotic r
Autor:
D. B. Chesnut
Publikováno v:
Heteroatom Chemistry. 16:263-270
Density functional theory (DFT) calculations have been carried out at the B3LYP 6-311+G(d,p) level to characterize the geometric and electronic characteristics of a series of S-methylsulfonium halides that possess unusual molecular structures. Atoms-
Autor:
D. B. Chesnut, Louis D. Quin
Publikováno v:
Heteroatom Chemistry. 15:216-224
Sulfur nuclear magnetic resonance (NMR) chemical shieldings have been determined at the correlation-including density functional theory scaled B3LYP/6-311+G(nd,p)//B3LYP/6-311+G(d,p) and modified MP2/6-311+G(nd,p) estimated infinite order Moller-Ples
Publikováno v:
Magnetic Resonance in Chemistry. 42:1037-1041
33S NMR chemical shifts were calculated by the scaled DFT and EMPI approaches for the fluoride, chloride and bromide of trimethylsulfonium ion (1) and S-methyltetrahydrothiophenium ion (2), in addition to the free cations. Experimental values were ob
Autor:
D. B. Chesnut
Publikováno v:
The Journal of Physical Chemistry A. 107:4307-4313
Calculations at the B3LYP/6-311+G(d,p)//B3LYP/6-311+G(d,p) level involving the atoms-in-molecules (AIM) and electron localization function (ELF) methods have been carried out for a variety of PO-bond-containing molecules in an effort to further chara
Autor:
D. B. Chesnut
Publikováno v:
Heteroatom Chemistry. 14:175-185
Calculations at the B3LYP/6-311 + G(d,p)//B3LYP/6-311 + G(d,p) level involving the electron localization function (ELF) and atoms-in-molecules (AIM) methods have been carried out for two-, three-, and four-coordinate gallium hydrides present in Na an
Autor:
D. B. Chesnut
Publikováno v:
The Journal of Physical Chemistry A. 106:6876-6879
The structures of water clusters varying in size from n = 2 to n = 6 (cyclic, prism, and cage isomers) have been redetermined on a counterpoise-corrected potential energy surface and result in oxygen−oxygen distances that are some 0.1 A longer than
Autor:
D. B. Chesnut
Publikováno v:
Heteroatom Chemistry. 13:53-62
Chemical bonding in the isomers of the formally triply bonded Si2H2 system are studied from the point of view of electron localization function (ELF) bond basin populations and atoms-inmolecules (AIM) delocalization indices. Calculation carried out a
Autor:
D. B. Chesnut
Publikováno v:
Journal of Computational Chemistry. 22:1702-1711
Electron localization function (ELF) theory is used to characterize changes that occur upon excitation from ground singlet to first excited triplet states in a series of isoelectronic 16-electron molecules including H2CCH2, HNCH2, H2CO, HNNH, HNO, an