Entrance onto potential energy surfaces of photochemical reactions without light. Type B reaction. Mechanistic organic photochemistry. LXVI

1972 ◽  
Vol 94 (9) ◽  
pp. 3245-3246 ◽  
Author(s):  
Howard E. Zimmerman ◽  
Gary A. Epling
Keyword(s):  
Potential Energy ◽  
Potential Energy Surfaces ◽  
Photochemical Reactions ◽  
Type B ◽  
Organic Photochemistry ◽  
Energy Surfaces

Potential energy surfaces for the photochemical reactions Ca*+H2→CaH+H

2002 ◽  
Vol 116 (2) ◽  
pp. 589-593 ◽  
Author(s):  
Kyoung Hoon Kim ◽  
Hyo Sug Lee ◽  
Yoon Sup Lee ◽  
Gwang-Hi Jeung
Keyword(s):  
Potential Energy ◽  
Potential Energy Surfaces ◽  
Photochemical Reactions ◽  
Energy Surfaces

scholarly journals Exploring Multiple Potential Energy Surfaces: Photochemistry of Small Carbonyl Compounds

2012 ◽  
Vol 2012 ◽  
pp. 1-13 ◽  
Author(s):  
Satoshi Maeda ◽  
Koichi Ohno ◽  
Keiji Morokuma
Keyword(s):  
Potential Energy ◽  
Carbonyl Compounds ◽  
Potential Energy Surfaces ◽  
Reaction Path ◽  
Photochemical Reactions ◽  
Reaction Route ◽  
Path Search ◽  
Global Reaction ◽  
Energy Surfaces ◽  
Critical Regions

In theoretical studies of chemical reactions involving multiple potential energy surfaces (PESs) such as photochemical reactions, seams of intersection among the PESs often complicate the analysis. In this paper, we review our recipe for exploring multiple PESs by using an automated reaction path search method which has previously been applied to single PESs. Although any such methods for single PESs can be employed in the recipe, the global reaction route mapping (GRRM) method was employed in this study. By combining GRRM with the proposed recipe, all critical regions, that is, transition states, conical intersections, intersection seams, and local minima, associated with multiple PESs, can be explored automatically. As illustrative examples, applications to photochemistry of formaldehyde and acetone are described. In these examples as well as in recent applications to other systems, the present approach led to discovery of many unexpected nonadiabatic pathways, by which some complicated experimental data have been explained very clearly.

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