1 IWW [(E)-ethene-1,2-diylbis(3-chloro-4,1-phenylene)]diboronic acid 1.000 2 7VG {3-chloro-4-[(E)-2-(3,5-dihydroxyphenyl)ethenyl]phenyl}boronic acid 0.750 3 XLB 3-[(E)-2-(4-borono-2-chlorophenyl)ethenyl]benzoic acid 0.720 4 S4B {4-[(E)-2-(3,5-dihydroxyphenyl)ethenyl]phenyl}boronic acid 0.708