Sci. Adv. Today 2 (2016) 25255  
  Review Article  
   
   
         
Review of the theoretical chemistry of cyclic intermolecular complexes formed by Pnicogen Bonds, Hydrogen Bonding, σ-hole centers, π and pseudo-π clouds  
  Boaz G. Oliveira  
     
Universidade Federal do Oeste da Bahia, Centro das Ciências Exatas e das Tecnologias, Campus Reitor Edgard Santos, 47805-000, Barreiras - BA, Brazil
   
  Abstract  
  A set of outcome parameters about structure, electronic properties, infrared vibration modes and charge density topologies of the C2H5N···PH3, C2H5N···PH2F, C2H5N···HF, C2H5N···HOF, C2H4O···(HCCl3), C2H4O···2(HCCl3), C2H4S···(HCCl3), C2H4S···2(HCCl3), C3H4···HF, C3H4···HCl, C4H4···HF and C4H4···HCl cyclic hydrogen complexes are revisited. Regardless of aziridine (C2H5N) behaves as Lewis bases, these systems are stabilized through the formation of pnicogen bonds (N···P) and hydrogen bonds (F···H and N···H). The complexes of oxirane (C2H4O) and thiirane (C2H4S) are stabilized through the traditional hydrogen bonds (O···H, S···H and Cl···H) besides the halogen bonds (Cl···Cl). Like unusual hydrogen bonds (π···H and σ···H), the complexes of cyclopropene (C3H4) and tetrahedrane (C4H4) are also formed, although with an interaction energy a little bit more stable in comparison with the pnicogen-bonded complexes. Besides DFT or MP2 levels of theory, the theoretical computing of molecular topology at light of the QTAIM approach as well as the electronic structure on the NBO view revealed different profiles of interaction strength in these cyclic complexes.  
     
   
  Cite this article as:  
  Boaz G. Oliveira, Review of the theoretical chemistry of cyclic intermolecular complexes formed by Pnicogen Bonds, Hydrogen Bonding, σ-hole centers, π and pseudo-π clouds, Sci. Adv. Today 2 (2016) 25255.