Synthesis Reaction Of Chemical Compounds Essay

1437 Words Sep 21st, 2016 6 Pages
Introduction
Interhalogen compounds are molecules containing two or more different halogen atoms. The general formula for interhalogen consists of XYn, where n is equal to 1,3,5 or 7 and the central halogen, X, being less electronegative than halogen Y results in the formation of polarized covalent bonds. This experiment consisted of using experimental techniques to synthesize and decompose highly reactive, thus unstable, interhalogens that seemingly violate the octet rule.
Synthesis reaction:
KClO3 + I2 + 6HCl → KCl + 2ICl3 + 3H2O
Decomposition reaction:
I2Cl6 → 2ICl + 2Cl2
The halogens used within this experiment consisted of Iodine and Chlorine to produce an oxidizing reagent Iodine trichloride. Due to electron orbitals and their interactions Iodine is able to have more than eight electrons around the atom, hypervalent compound, allowing the formation of iodine trichloride.1 When iodine trichloride is being synthesized the temperature must remain between 35-40oC to optimize the synthesis and slow down decomposition. Also HCl must be added slowly within the 30-minute time span optimizing synthesis while slowing down decomposition as well. Iodine trichloride is able to become more stable and form a dimeric structure I2Cl6 due to the absence of dipole moment.2 Joining two T-shaped ICl3 molecules by a 3-center 4-electron hypervalent bond forms the dimer.

Figure 1: ICl3 as a dimer

Once Iodine trichloride is obtained, it will decompose relatively quickly when…

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