Ester (Functional Group) Chemical Structure
1. Identification Summary Ester denotes the carboxylate ester functional group with general formula R–C(=O)–OR′ (R, R′ = carbon substituents). Esters are polar, aprotic, H-bond acceptors (C=O, C–O) but not donors, display a characteristic IR C=O band ~1735 cm⁻¹ for saturated aliphatic esters (lower with conjugation or ring strain), and strong C–O stretches ~1050–1300 cm⁻¹. ¹³C … Read more