Question

Describe D and L Isomers.

Answer 1

Isomers:

• The phenomenon known as isomerism occurs when many compounds with the same chemical formula but different chemical structures coexist.
• Isomers are types of chemical compounds that share the same chemical formula but have different characteristics and atom arrangements.
• As a result, isomers are substances that display isomerism.

D and L Isomers:

• Certain chemicals have the capacity to rotate plane polarised light either clockwise or counterclockwise (anticlockwise).
• These chemicals are referred to as optically active substances, and optical activity is the characteristic that it possesses.
• Dextrorotatory isomer (Latin: dexter = right) or d-form or represented by a $+\mathrm{ve}$ sign is the optical isomer that spins plane polarised light to the right (clockwise).
• Laevorotatory isomer, often known as I-form or denoted by the $-\mathrm{ve}$ sign, is the optical isomer that spins plane polarised light to the left (anticlockwise).
• Glucose, which shows optical isomers and that if $\left(\mathrm{OH}\right)$ is on the right side is called D Configuration.
• And similarly, on which $\left(\mathrm{OH}\right)$ is left side is called L Configuration.