The following endoergic ion-molecule reactions were investigated with a crossed beam apparatus: (UNFORMATTED TABLE FOLLOWS) / Cs('+) + C(,6)H(,5)CN (--->) C(,6)H(,5)('+) + CsCN (1) / Cs('+) + C(,4)H(,7)Cl (--->) C(,4)H(,7)('+) + CsCl (2) / (--->) C(,3)H(,5)('+) + C(,2)H(,2) + CsCl (3) / Cs('+) + C(,3)H(,5)Br (--->) C(,3)H(,5)('+) + CsBr (4)(TABLE ENDS) / Angular and energy distributions were measured for these reactions at the following relative collision energies: reaction (1) at 10.9 and 13.1 eV, reaction (2) at 7.2 eV, reaction (3) at 9.9 eV, and reaction (4) at 7.2 and 9.5 eV. / Cartesian contour maps of the relative scattering intensity of the product ion were constructed for each reaction at each relative collision energy. The experimental contour maps for reactions (1) through (3) showed the greatest scattering intensity sideways to the center of mass, unlike the results of other similar systems investigated in this lab. The experimental contour map for reaction (4) showed backward peaking. / A general treatment of the Sequential Impulse Model (SIM) was developed for endoergic, exoergic and elastic reactions and generic calculated contour maps were presented to illustrate the effects of the model's adjustable parameters. Best fit calculated SIM contour plots were presented for reactions (1), (2) and (4). Contour maps of the relative intensity of the scattered product ion for reactions (1) and (2) were reproduced quite successfully, while the corresponding contour maps for reaction (4) were reproduced with fair success. / The SIM best fit calculations for reaction (1) were discussed in comparison with SIM calculations published for reactions of Cs('+) with other substituted benzenes. Physical and chemical implications of the SIM best fit parameters were discussed for each system. Finally, several modifications to the SIM were suggested to enhance the model's realism. / Source: Dissertation Abstracts International, Volume: 48-03, Section: B, page: 0772. / Thesis (Ph.D.)--The Florida State University, 1987.
| Identifer | oai:union.ndltd.org:fsu.edu/oai:fsu.digital.flvc.org:fsu_76086 |
| Contributors | COPPENGER, GEORGE WILLIAM., Florida State University |
| Source Sets | Florida State University |
| Detected Language | English |
| Type | Text |
| Format | 196 p. |
| Rights | On campus use only. |
| Relation | Dissertation Abstracts International |
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