18ElectronRuleSupplement

- Ch 1a The 18-Electron Rule Supplemental Materials Introduction Electron counting is a formalism and does not necessarily reflect the

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Ch 1a Supplemental Materials The 18-Electron Rule Page 1 of 2 Introduction: Electron counting is a formalism and does not necessarily reflect the distribution of electrons in a compound. There are many compounds that violate the 18- Electron Rule, but we will not be concerned with those in this class. There are two methods of counting electrons in transition metal compounds and this often leads to confusion amongst students. The two methods are usually called the Covalent or Neutral Ligand method and the Ionic method. The key is to follow instructions as to which method to use (when given), be consistent (labeling the method that you are using is recommended), use the ionic method when a ligand is specifically listed in a problem as an ion, and use the covalent or neutral ligand method when the oxidation state of the metal is unknown. The Ionic Method: Remove all of the ligands from the metal. If necessary add the proper number of electrons to each ligand to bring it to a closed valence shell state. Example
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 06/05/2008 for the course CH 1a taught by Professor Lewis during the Fall '08 term at Caltech.

Page1 / 2

- Ch 1a The 18-Electron Rule Supplemental Materials Introduction Electron counting is a formalism and does not necessarily reflect the

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online