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Intermolecular Interaction Energies in Molecular Crystals of 4-Formylcoumarin Derivatives

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1TitleTitle of DocumentIntermolecular Interaction Energies in Molecular Crystals of 4-Formylcoumarin Derivatives
2CreatorAuthor's name, affiliation, country AHSAN ELAHI and RAJNI KANT*
Department of Physics & Electronics, University of Jammu, Jammu Tawi -180 006, India
3SubjectDicipline(s) Chemical Science
3SubjectKeywords Coumarin, PIXEL, Hydrogen bonding, Intermolecular interactions, Lattice energy
4DescriptionAbstract Most of the crystallographic analysis that follows from structure determination involves interpretation of the molecular geometry and a working knowledge of a variety of intra- and intermolecular interactions based purely on geometrical considerations (distance and angle cut off criteria). The missing link is to explore the energetics associated with these interactions, particularly intermolecular ones, which provide a platform for the molecules to associate with each other. In this regard, PIXEL calculations have been performed on a series of six molecules of 4-formylcoumarin derivatives. PIXEL calculations suggest the presence of different structural motifs that play significant role in the stabilization of the structure. Analysis of these motifs shows that bifurcated C-H?O and π? π stacking are the major contributors towards the stabilization of the structure. However, it is found that molecular pairs interacting via dimeric C=O?C=O interaction also make significant contribution of almost -5 kcal mol-1. In addition to these motifs, the role of weak C-H?X (F, Cl or Br) has also been explored in the stabilization of molecular packing.
5PublishersOrganizing agency, location WWW Publications, India
6Contributor Sponsor(s) -
7DateDate (YYYY-MM-DD) -
8TypeStatus & genre Peer-reviewed Article
8TypeType
9FormateFile Formate PDF
10IdentifierUniform Resource Identifier Click Here
10IdentifierDigital Object Identifier
11SourceJournal/conference title; vol., no. (Year)Chemical Science Transactions, Volume  4 , Number  (3), (2015)
12LanuguageEnglish=en en
13RelationSupp.files
14Coverage -
15CopyrightCopyright and permissions
Chemical Science Transactions | Chem Sci Trans | CST | Online Chemistry Journal | Open Access
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