Electronic Structures of Hydrogen Bonds

We have seen that when two neutral atoms with their positive nuclei surrounded by spherical electronic clouds approach each other, this results in a strong distortion of the electronic clouds and finally leads to the formation of more stable molecules where the nuclei adopt fixed relative positions and are surrounded by electrons that occupy new orbitals around them. More precisely, the inner orbitals of the atoms of the molecule are but slightly modified with respect to those of the isolated original atoms. The outer orbitals are completely 

The Hydrogen Bond Formation, Thermodynamic Properties, Classification 

THERMODYNAMICS OF H-BONDS ELECTRONIC AND VIBRATIONAL CONTRIBUTIONSTO ENTHALPIES 

H-bonds may be characterized by various quantities, such as their enthalpies of formation, or their X - Y equilibrium distance, or, better, the wavenumbers of the centres of some of 

The enthalpy AH of an isolated H-bond is defined as the enthalpy of the reaction  

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The electronic structure of hydrogen-bonded pairs of bases guanine-cytosine... 

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