Case study presenting the use of quantum-mechanical "zone criterion" as a clue in assigning the electronic transitions exhibited by a complex compound
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Published:2023-12-30
Issue:2
Volume:29
Page:12-15
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ISSN:
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Container-title:Annals of the University of Craiova Series Chemistry
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language:
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Short-container-title:AUC Chem
Author:
Liana-Simona SbîrnăORCID, , Clementina MoldovanORCID, Marian CiuperceanuORCID, ,
Abstract
As quantum-mechanical criteria are extremely useful in investigating the molecular structure of a newly synthesized chemical compound (in particular, in assigning its electronic transitions), this paper aims to present the results obtained by using "zone criterion" as a clue in interpreting the UV-Vis spectrum of a complex compound that we dealt with, which was formed by the coordination to Ni(II) of a 1,4-naphthalenedione derivate (namely, 2-mercapto-3-niacinamido-1,4-naphthalenedione). So, by taking into account the fact that an electronic transition extremely unlikely occurs between two quantum-mechanical states involving spatially separated parts of a certain molecule (which we simply called "zone criterion"), we used a specialized software package in order to perform a molecular modeling that was able to lead us (through specific semi-empirical calculation) to the assignment of all the recorded electronic transitions. The results thus obtained proved themselves to be in a very good accordance with the classical interpretation of the UV-Vis spectrum (which we already had reported), showing, once again, that quantum-mechanical analysis can serve as an useful clue and represents a powerful tool in characterizing the structure of a new complex compound.
Publisher
University of Craiova
Subject
General Medicine,General Earth and Planetary Sciences,General Environmental Science,General Medicine,Ocean Engineering,General Medicine,General Medicine,General Medicine,General Medicine,General Earth and Planetary Sciences,General Environmental Science,General Medicine
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