Electronic structure, of heterocyclic

Electronic Structure of Heterocyclic Sulfur Compounds R. Zahradnik, Adv. Heterocycl. Chem., 1965, S, 1-67. 

Zahradnik, R., Electronic Structure of Heterocyclic Sulfur Compounds, 5, 1. Zahradnik, R., Koutecky, J., Theoretical Studies of Physico-chemical Properties and Reactivity of Azines, 5, 69. 

Electronic Structure of Heterocyclic Sulfur Compounds R. ZahradnIk... 

This relationship is undoubtedly responsible for much of the intensive theoretical and experimental investigation currently being carried out on these systems. The purely theoretical aspects of the relationship were recently discussed in detail by Zahradnik in a review on the Electronic Structure of Heterocyclic Sulfur Compounds, published in Volume 5 of this series.1... 

The methods and problems of quantum mechanical calculations on the electronic structures of -heterocyclic compounds in general, and of the 1,2- and 1,3-dithiolium ions in particular, have already been discussed in detail by Zahradnik in Volume 5 of this series.1 We can therefore confine the present discussion to the essential conclusions drawn from these theoretical studies. It should, however, be pointed out that, insofar as they relate to the 1,2-dithiolium ion, these are largely a priori calculations. 

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