Please use this identifier to cite or link to this item: http://localhost:8080/xmlui/handle/123456789/2744
Title: Molecular electrostatic potential analysis of non-covalent complexes
Authors: BIJINA, PADINJARE VEETIL
SURESH, C H
Keywords: Non-covalent complex
hydrogen bond
halogen bond
dihydrogen bond
pnicogen bond
tetrel bond
lithium bond
chalcogen bond
molecular electrostatic potential
Issue Date: 24-Aug-2016
Publisher: spinger
Citation: J. Chem. Sci, 128(10):1677–1686
Abstract: Ab initio MP4/Aug-cc-pvDZ//MP2/6-311++g(d,p) level interaction energy (Eint) and molecular electrostatic potential analysis (MESP) of a large variety of non-covalent intermolecular complexes, viz. tetrel, chalcogen, pnicogen, halogen, hydrogen, dihydrogen and lithium bonded complexes have been reported. The electronic changes associated with the non-covalent complex formation is monitored in terms of MESP minimum (Vmin) in the free and complexed states of the donor and acceptor molecules as well as in terms of MESP at the donor and acceptor atoms (Vn) of the free monomers and complexes. The change in Vmin or Vn on the donor molecule ( Vmin(D) or Vn(D)) during complex formation is proportional to its electron donating ability while such a change on the acceptor molecule ( Vmin(A) or Vn(A)) is proportional to its electron accepting ability. Further, the quantities Vmin = Vmin(D) − Vmin(A) and Vn = Vn(D) − Vn(A) have shown strong linear correlations with Eint of the complex (Eint values fall in the range 0.7 to 46.2 kcal/mol for 54 complexes) and suggest that the intermolecular non-covalent interactions in a wide variety of systems can be monitored and assessed in terms of change in MESP due to complex formation in the gas phase. With the incorporation of solvent effect in the calculation, charged systems showed significant deviations from the linear correlation. The MESP based analysis proposes that the large variety of intermolecular non-covalent complexes considered in this study can be grouped under the general category of electron donor-acceptor (eDA) complexes
URI: http://hdl.handle.net/123456789/2744
Appears in Collections:2016

Files in This Item:
File Description SizeFormat 
molecular-padinjari-journal of chemical science.pdf
  Restricted Access
5.19 MBAdobe PDFView/Open Request a copy


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.