Diazo compounds are organic molecules that contain a diazo group, which consists of two nitrogen atoms connected by a double bond (–N=N–). These compounds are typically represented as R–N=N–R', where R and R' can be various organic groups. Diazo compounds are known for their reactivity and are often used in organic synthesis, particularly in the formation of other complex molecules. One of the most notable applications of diazo compounds is in the field of photochemistry, where they can undergo photolysis to generate reactive intermediates. Additionally, diazo compounds are utilized in the synthesis of azo dyes, which are widely used in textiles and other industries for their vibrant colors.