User:Kenneth Benz/sandbox

Topochemical reactions
Normally for any reaction to happen, the reactants or reacting groups have to move and approach each other for the bond formation. In solution, this is easy because of the free motion of molecules in isotopic solution. But there are reactions that happen in crystals due to the close placement of reacting groups in the crystal lattice. Such lattice controlled reactions are called topochemical reactions. There are many kinds of topochemical reactions known.

[2+2] cycloaddition

[4+4] cycloaddition

[2+4] cycloaddition

[2+3] cycloaddition

(a) TAAC reaction

(b) TEAC reaction