Sergiy Krasnokutski and Dong-Sheng Yang University of Kentucky, Lexington, KY 40506, USA $ National Science Foundation $

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Sergiy Krasnokutski and Dong-Sheng Yang University of Kentucky, Lexington, KY 40506, USA $ National Science Foundation $

1. J. Miyawaki and K.-i. Sugawara, Chem. Phys. Lett. 386, 196 (2004) Debye 2.37 Debye 2. X. Wang, B. R. Sohnlein, S. G. Li, J. F. Fuller, and D. S. Yang, Canadian Journal of Chemistry-Revue Canadienne De Chimie 85 (10), 714 (2007). 4. W. Y. Guo, H. C. Liu, and S. H. Yang, Int. J. Mass. Spectrom 226 (2), 291 (2003). Cu Mg

M. T. Rodgers, J. R. Stanley, and R. Amunugama, J. Am. Chem. Soc. 122 (44), (2000) Debye 2.37 Debye Mg +, Al +, Sc +, Ti +, V +, Cr +, Mn +, Fe +,Co +, Ni +, Cu +, and Zn +

R. Amunugama and M. T. Rodgers, Int. J. Mass. Spectrom 196, 439 (2000) Debye 2.37 Debye

Wavenumber (cm -1 )

Li-PyridineCa-Pyridine

1 A'  2 A' 1 A'  2 A" 3 A"  4 A" 1A12B11A12B1  E (cm -1 )

Li-pyridine Li-pyridazine LUMO

Li-pyridineCa-pyridineSc-pyridineLi-pyridazineCa-pyridazine Type of the bond ?? dissociation energy (cm -1 ) Experiment* dissociation energy (cm -1 ) calculation ??? Ionization energy (cm -1 ) experiment Ionization energy (cm -1 ) calculation   * where from collision induced dissociation experiment