Back
 OJPC  Vol.4 No.3 , August 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
Show more
Abstract: Ions or molecules are said to be isoelectronic if they are composed of different elements but have the same number of electrons, the same number of covalent bonds and the same structure. This criterion is unfortunately not sufficient to ensure that a chemical structure is a valid chemical compound. In a previous article, a procedure has been described to draw 2D valid structural formulas: the even-odd rule. This rule has been applied first to single-bonded molecules then to single-charged single-bonded ions. It covers hypovalent, hypervalent or classic Lewis’ octet compounds. The funding principle of the even-odd rule is that each atom of the compound possesses an outer-shell filled only with pairs of electrons. The application of this rule guarantees validity of any single-covalent-bond chemical structure. In the present paper, this even-odd rule and its electron-pair criterion are checked for coherence with an effective-valence isoelectronic rule using numerous known compounds having single-covalent-bond connections. The test addresses Lewis’ octet ions or molecules as well as hypovalent and hypervalent compounds. The article concludes that the even-odd rule and the effective-valence isoelectronicity rule are coherent for known single-covalent-bond chemical compounds.
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.
References

[1]   Icilio, G. (1911) Amedeo Avogadro e la sua opera scientific. Accademia delle scienze, Opere scelte di Amedeo Avogadro, Turin, i-cxl.

[2]   Greenaway, F. (1966) John Dalton and the Atom. Cornell University Press, Ithaca.

[3]   Einstein, A. (1905) über die von der molekularkinetischen Theorie der W?rmegeforderte Bewegung von in ruhenden Flüssigkeiten suspendierten Teilchen. Annalen der Physik, 322, 549-560.

[4]   Perrin, J. (1909) Mouvement brownien et réalité moléculaire. Annales de Chimie et de Physique, 18, 1-114.

[5]   Faraday, M. (1859) Experimental Researches in Chemistry and Physics. Richard Taylor and William Francis, London.

[6]   Greenwood, N.N. and Earnshaw, A. (1997) Chemistry of the Elements. 2nd Edition, Butterworth-Heinemann, Oxford.

[7]   DeKock, R.L. and Gray, H.B. (1989) Chemical Structure and Bonding. University Science Books, 94.

[8]   http://en.wikipedia.org/wiki/Isoelectronicity

[9]   Auvert, G. (2014) Improvement of the Lewis-Abegg-Octet Rule Using an “Even-Odd” Rule in Chemical Structural Formulas: Application to Hypo and Hyper-Valences of Stable Uncharged Gaseous Single-Bonded Molecules with Main Group Elements. Open Journal of Physical Chemistry, 4, 60-66. http://dx.doi.org/10.4236/ojpc.2014.42009

[10]   Auvert, G. (2014) Chemical Structural Formulas of Single-Bonded Ions Using the “Even-Odd” Rule Encompassing Lewis’s Octet Rule: Application to Position of Single-Charge and Electron-Pairs in Hypo- and Hyper-Valent Ions with Main Group Elements. Open Journal of Physical Chemistry, 4, 67-72. http://dx.doi.org/10.4236/ojpc.2014.42010

[11]   http://www.chemspider.com/

[12]   http://www.ncbi.nlm.nih.gov/

[13]   http://en.wikipedia.org/

[14]   Gillespie, R.J. and Popelier, P.L.A. (2001) Chemical Bonding and Molecular Geometry. Oxford University Press, Oxford.

 
 
Top