Transformational Isomers Research Paper
Isomers are organic compounds having the similar molecular formula as each other but with a totally different chemical formula. Isomers normally can be divided into 2 major groups which is constitutional isomers and stereoisomers. Constitutional isomers are those isomers which are having same molecular formula but different connectivity or in the other words they can be said that their atoms are connected in different orders. Let have an example, the constitutional isomers for butane, C4H10 either can be butane or 2-methylpropane.
Stereoisomers are isomers having the same molecular formula and sequence of bonded atoms but just different in three-dimensional orientation in space. Stereoisomers also can be categorised as two categories which consisting of configurational isomers and also conformational isomers which is the main topic of our discussion.
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These isomers can actually be interconverted by rotation around a single bond.
Conformational isomers can be best displayed in Newman Projections. Newman Projections is defined as the representation of a molecule in which the atoms as well as bonds are viewed along the axis of rotation. The carbon in the front part of the molecule is indicated as a dot while the back one indicated using the shape of circle. The substituent on those carbon atoms can be viewed from the front and also from the back of the carbon-carbon single bond. There are few major types of conformational isomers such as:
i) Linear alkane conformations with different state such as eclipsed, staggered either anti or gauche ii) Ring conformation such as cyclohexane with chair flip and twist-boat conformations iii) Atropisomerism which the molecule can become chiral with a restricted rotation about a
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