Gas-Phase Coordination of Mg+, (c-C5H5)Mg+, and (c-C5H5)2Mg+ with Small Inorganic Ligands
| Autor: | Vladimir I. Baranov, Rebecca K. Milburn, Diethard K. Bohme, and Alan C. Hopkinson |
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| Rok vydání: | 1999 |
| Předmět: | |
| Zdroj: | The Journal of Physical Chemistry A. 103:6373-6382 |
| ISSN: | 1520-5215 1089-5639 |
| DOI: | 10.1021/jp9908505 |
| Popis: | The coordination of the electronic ground states of Mg+, (c-C5H5)Mg+, and (c-C5H5)2Mg+ with the inorganic molecules H2, NH3, H2O, N2, CO, NO, O2, CO2, N2O, and NO2 has been investigated in the gas phase at room temperature and moderate pressures. Reaction rate coefficients and product distributions were measured with the selected-ion flow tube (SIFT) technique operating at 294 ± 3 K and a helium buffer-gas pressure of 0.35 ± 0.01 Torr. Rate coefficients were measured for all observed ligation steps (or upper limits in the case of nonreactions), and bond connectivities in the coordinated ions were probed with multicollision-induced dissociation. The rates and extent of ligation were found to depend on the degree of ligation with c-C5H5 and the nature and size of the inorganic ligand. Mg+ was found to be unreactive except with ammonia, which was found to add slowly (k = 4 × 10-12 cm3 molecule-1 s-1). Single ligation of Mg+ with c-C5H5 substantially enhances the efficiency of ligation; the initial ligation i... |
| Databáze: | OpenAIRE |
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