a condition in which several chemical compounds have the same molecular formula (have the same number and type of atoms) but, because those atomsare arranged differently in each, they all have different chemical properties.
Results from our forum
http://www.chemguide.co.uk/basicorg/isomerism/geometric.html all you need is restricted rotation about some bond isomerization may occur at diverse conditions, e.g. organic solvent, high energy (light), radicals, enzymes
See entire post