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Table 2 Hydrogen-bond geometry (Å, °)

From: Tandem Aldol-Michael reactions in aqueous diethylamine medium: a greener and efficient approach to dimedone-barbituric acid derivatives

D—H · · · A D—H H · · · A D · · · A D—H · · · A
C2—H2B · · · O1 0.9600 2.2600 2.655(3) 104.00
C4—H4B · · · O3 0.9600 2.2300 2.682(3) 108.00
C7—H7A · · · O1 0.9800 2.3700 2.894(2) 113.00
C7—H7A · · · O5 0.9800 2.2800 2.821(2) 114.00
C22—H22A · · · O3i 0.9600 2.5400 3.376(3) 146.00
  1. Symmetry code: (i) x, −y + 3/2, z + 1/2.