| Autor: |
W. D. Reents, Anthony M. DeSantolo, M. L. Mandich, C.R. Chris Wang |
| Rok vydání: |
1994 |
| Předmět: |
|
| Zdroj: |
International Journal of Mass Spectrometry and Ion Processes. 130:133-142 |
| ISSN: |
0168-1176 |
| DOI: |
10.1016/0168-1176(93)03913-7 |
| Popis: |
Chemistry of indium phosphide clusters is studied using the powerful trapped ion cell techniques of Fourier transform ion cyclotron resonance (FTICR) mass spectrometry in conjunction with an external cluster source and ion guide. The external source is capable of generating a wide range of cluster ions which the ion guide loads with high efficiency into the FTICR cell. The differential pumping of the ion guide allows for operation of the FTICR at requisite low pressure conditions while extracting clusters generated in a high pressure environment. Highly selective reactions of indium phosphide clusters are observed with ammonia and trimethylamine. Of all the InxP+y cluster sizes and stoichiometries studied, only the indium dimer ion reacts exothermically with ammonia. Thermalized In+2 reacts by indium ion transfer to ammonia. Owing to its much higher basicity, trimethylamine is much more reactive. The smaller indium phosphide clusters react by indium ion transfer to trimethylamine. As the clusters become larger, however, the reaction probability decreases to zero. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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