19.2B Structure of amines The nitrogen atom of most amines is like that of ammonia; it is approximately sp3 hybridized. The three alkyl groups(or hydrogen atoms) occupy corners of a tetrahedron; the sp3 orbital containing the unshared electron pair is directed toward the other corner we describe the geometry of the amine by the location of the atoms as being trigonal pyramidal SP hybridized R 1)由于氮上有孤对电子,胺显碱性。 R R 2)胺类可作为亲核试剂 Structure of an amine19.2B Structure of amines The Nitrogen atom of most amines is like that of ammonia; it is approximately sp3 hybridized. The three alkyl groups (or hydrogen atoms) occupy corners of a tetrahedron; the sp3 orbital containing the unshared electron pair is directed toward the other corner. We describe the geometry of the amine by the location of the atoms as being trigonal pyramidal. N R' R'' R''' SP 3 hybridized Structure of an amine 1） 由 于 氮 上 有 孤 对 电 子 ， 胺 显 碱 性 。 2） 胺 类 可 作 为 亲 核 试 剂