Senin, 21 Oktober 2013

Help with Lewis electron dot structures | Chlorine Perchlorate Cl2O4

A simple procedure for writing Lewis dot structures was given in a previous post entitled “Lewis Structures and the Octet Rule”.
Several worked examples relevant to this procedure were given in previous posts please see the Sitemap - Table of Contents (Lewis Electron Dot Structures).



Let us consider the case of of chlorine perchlorate Cl2O4 ( Cl(O)3OCl)

Step 1Connect the atoms with single bonds

Fig. 1 : Connect the atoms of chlorine perchlorate with single bonds
Fig. 1 : Connect the atoms of chlorine perchlorate with single bonds.
  

Step 2: Calculate the # of electrons in π bonds (multiple bonds) using  formula (1)


Where n in this case is 6 since Cl2O4  consists of six atoms.
Where V = (6 + 7 + 6 * 2 + 6 + 7) = 38 
Therefore, P = 6n + 2 – V = 6 * 6 + 2 – 38 = 0     So  there are no  π electrons in Cl2O4.

Step 3 & 4: The Lewis structures for Cl2O4 are derived below:

Fig. 2 : Plausible Lewis structure of chlorine perchlorate.
Fig. 2 : Plausible Lewis structure of chlorine perchlorate.




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