Coherence of the Even-Odd Rule with an Effective-Valence Isoelectronicity Rule for Chemical Structural Formulas: Application to Known and Unknown Single-Covalent-Bonded CompoundsReportar como inadecuado




Coherence of the Even-Odd Rule with an Effective-Valence Isoelectronicity Rule for Chemical Structural Formulas: Application to Known and Unknown Single-Covalent-Bonded Compounds - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

Ions or molecules are saidto be isoelectronic if they are composed of different elements but have thesame number of electrons, the same number of covalent bonds and the samestructure. This criterion is unfortunately not sufficient to ensure that achemical structure is a valid chemical compound. In a previous article, aprocedure has been described to draw 2D valid structural formulas: the even-oddrule. This rule has been applied first to single-bonded molecules then tosingle-charged single-bonded ions. It covers hypovalent, hypervalent or classicLewis’ octet compounds. The funding principle of the even-odd rule is that eachatom of the compound possesses an outer-shell filled only with pairs ofelectrons. The application of this rule guarantees validity of anysingle-covalent-bond chemical structure. In the present paper, this even-oddrule and its electron-pair criterion are checked for coherence with aneffective-valence isoelectronic rule using numerous known compounds havingsingle-covalent-bond connections. The test addresses Lewis’ octet ions ormolecules as well as hypovalent and hypervalent compounds. The articleconcludes that the even-odd rule and the effective-valence isoelectronicityrule are coherent for known single-covalent-bond chemical compounds.

KEYWORDS

Isoelectronicity, Effective Valence, Molecule, Ion, Even-Odd, Rule, Structural Formula, Covalent Bond

Cite this paper

Auvert, G. 2014 Coherence of the Even-Odd Rule with an Effective-Valence Isoelectronicity Rule for Chemical Structural Formulas: Application to Known and Unknown Single-Covalent-Bonded Compounds. Open Journal of Physical Chemistry, 4, 126-133. doi: 10.4236-ojpc.2014.43015.





Autor: Geoffroy Auvert

Fuente: http://www.scirp.org/



DESCARGAR PDF




Documentos relacionados