Diamines are a class of organic compounds containing two amino groups (-NH₂), with the general chemical formula usually being H₂N-R-NH₂ (where R represents a hydrocarbon group or other linking group). The following is a detailed description of diamines:
Basic Structure
Number of amino groups: The molecule contains two amino groups (-NH₂), which may be attached to an aliphatic chain, aromatic ring, or other skeleton.
Classification: Based on the different linking groups (R), they can be divided into:
Aliphatic diamines (e.g., ethylenediamine H₂N-CH₂-CH₂-NH₂)
Aromatic diamines (e.g., p-phenylenediamine H₂N-C₆H₄-NH₂)
