dc.contributor.author | Stefani, D. | en |
dc.contributor.author | Pashalidis, Ioannis | en |
dc.contributor.author | Nicolaides, Athanassios V. | en |
dc.creator | Stefani, D. | en |
dc.creator | Pashalidis, Ioannis | en |
dc.creator | Nicolaides, Athanassios V. | en |
dc.date.accessioned | 2019-11-21T06:22:59Z | |
dc.date.available | 2019-11-21T06:22:59Z | |
dc.date.issued | 2008 | |
dc.identifier.uri | http://gnosis.library.ucy.ac.cy/handle/7/56164 | |
dc.description.abstract | The conformations of boric acid (1), its conjugate basis (2) and borate anion (3) have been investigated with the B3LYP, HF, MP2 and QCISD methods with a variety of basis sets. Transition-state structures connecting the various minima have been computed. Relative energies are reported at the G3(MP2)//B3LYP level of theory. The lowest-energy conformation of boric acid has C3h symmetry. The Cs conformer lies 4.1 kcal/mol higher in energy and the barrier for inter-conversion is 7.8 kcal/mol. The lowest-energy conformation of (HO)2BO- has C2v symmetry. There are two conformations lying higher in energy by 1.7 and 9.1 kcal/mol, with barriers of 7.8 and 10.3 kcal/mol, respectively. For borate anion two distinct S4-symmetry minima were located which differ in energy by 1.5 kcal/mol. The computed enthalpies of formation for 1, 2 and 3 are -236.3, -242.9 and -320.8 kcal/mol, respectively. © 2007 Elsevier B.V. All rights reserved. | en |
dc.source | Journal of Molecular Structure: THEOCHEM | en |
dc.source.uri | https://www.scopus.com/inward/record.uri?eid=2-s2.0-40449083014&doi=10.1016%2fj.theochem.2007.12.001&partnerID=40&md5=ebb4ac79f4a056ef953051ebd0e3db47 | |
dc.subject | Structure | en |
dc.subject | Thermochemistry | en |
dc.subject | DFT | en |
dc.subject | Conformation | en |
dc.subject | G3(MP2)//B3LYP | en |
dc.subject | HF | en |
dc.subject | MP2 | en |
dc.subject | QCISD | en |
dc.subject | Transition state | en |
dc.title | A computational study of the conformations of the boric acid (B(OH)3), its conjugate base ((HO)2BO-) and borate anion (B(OH)4 -) | en |
dc.type | info:eu-repo/semantics/article | |
dc.identifier.doi | 10.1016/j.theochem.2007.12.001 | |
dc.description.volume | 853 | |
dc.description.issue | 1-3 | |
dc.description.startingpage | 33 | |
dc.description.endingpage | 38 | |
dc.author.faculty | 002 Σχολή Θετικών και Εφαρμοσμένων Επιστημών / Faculty of Pure and Applied Sciences | |
dc.author.department | Τμήμα Χημείας / Department of Chemistry | |
dc.type.uhtype | Article | en |
dc.source.abbreviation | J.Mol.Struct.THEOCHEM | en |
dc.contributor.orcid | Pashalidis, Ioannis [0000-0002-7587-6395] | |
dc.contributor.orcid | Nicolaides, Athanassios V. [0000-0003-0841-565X] | |
dc.gnosis.orcid | 0000-0002-7587-6395 | |
dc.gnosis.orcid | 0000-0003-0841-565X | |