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The optimised geometries of heterocyclic hydrogen-bonded complexes, C 2 H 4 O···HX and C 3 H 6 O···HX, where X=F or Cl, were determined at DFT/B3LYP/6-311++G(d,p) computational level. Structural, electronic and vibrational properties of these complexes are used in order to compare the strained ring, which confer the great reactivity of these heterocyclic rings with...
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