Author(s): Varadwaj PR; Varadwaj A; Marques HM;

A density functional theory study of the structure of the title compounds with the divalent metal ions in their high-spin ground state, obtained using B3LYP/6-311++G(d,p) in vacuo and in aqueous solution simulated using a polarized continuum medium, is reported for the first time. The modeling reproduces the pseudo pentagonal bipyramidal crystallographic ...

Article GUID: 21568260

Author(s): Varadwaj PR; Varadwaj A; Peslherbe GH; Marques HM;

Density functional theory calculations, together with quantum theory of atoms in molecules (QTAIM) analyses, have been performed to investigate 18-azacrown-6 complexes of the high-spin late first transition series divalent metal ions in the gas phase and, in some cases, in aqueous solution simulated by a polarizable continuum model. Six intramolecular H-H ...

Article GUID: 21961695

Author(s): Varadwaj PR; Varadwaj A; Peslherbe GH;

The proton accepting and donating abilities of cyclopropenylidene (c-C(3)H(2)) on its complexation with hydrogen halides H-X (X = F, Cl, Br) are analyzed using density-functional theory with three functionals (PBE0, B3LYP, and B3LYP-D) and benchmarked against second-order Møller-Plesset (MP2) theory. Standard signatures including, inter alia, dipole momen ...

Article GUID: 22696309

Author(s): Varadwaj A; Varadwaj PR;

Based on an experimental observation, it has been controversially suggested in a study (Kurotobi et al., Science 2011, 33, 613) that a single molecule of water can completely be localized within the subnano-space inside the fullerene C(60) cage and, that neither the H atoms nor the O lone-pairs are linked, either via hydrogen bonding or through dative bon ...

Article GUID: 23090782