Abstract The crystal structures of cis??3??iodoacrylic acid (1), trans??3??iodoacrylic acid (2), trans??3??iodoacrylic acid methyl ester (3), 3, 3??diiodopropanoic acid (4), and trans??2, 3?? diiodoacrylic acid (5) are reported. Compounds 1 and 2 are the kinetic and thermodynamic
