Phosphonium ions of 2,4,6,8-tetra-tert-butyl-1,3,5,7-tetraphosphacubane and 1,2,5,6-tetraphosphatricyclo[4.2.0.02,5]-octa-3,7-diene in the gas phase

Host-guest complexes, phosphonium ion decomposition pathways and interaction with onium ions (and carbocations). A field desorption (FD), fast atom bombardment (FAB) and tandem mass spectrometry (CAD-MS/MS) study

Kenneth K. Laali, Chrys Wesdemiotis, Michael Polce, Sarka Beranova

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Abstract

We report a mass spectrometric study (FDMS, FABMS) of a series of phosphonium triflate salts derived from 2,4,6,8-tetra-tert-butyl-1,3,5,7-tetraphosphacubane 1 and 1,2,5,6-tetraphosphatricyclo[4.2.0.02,5]octa3,7-diene2, namely 3+(OTf)-, 4+(OTf)-, 5+(OTf)-, 62+(OTf·SbCl6)2-, 72+(OTf-SbCl6)2- and 8+(OTf)-. Except for the dications, the intact phosphonium ions were observed in all cases. The host-guest (H-G) chemistry of 3+ and some of its fragment ions with dicyclohexano-24-crown-8 have been probed. Low energy collisional decomposition of 3+ gives m/z 115 and 169 as prominent products for which structures 12+ and 11+ have been suggested in analogy with the recently discovered solution chemistries of phosphaalkynes and phosphirenes. The decomposition pathways of the studied phosphonium cations have been compared and discussed.

Original languageEnglish (US)
Pages (from-to)1191-1195
Number of pages5
JournalJournal of the Chemical Society, Perkin Transactions 2
Issue number6
StatePublished - Dec 1 1995
Externally publishedYes

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Mass spectrometry
Desorption
Computer aided design
Gases
Ions
Decomposition
Atoms
Cations
Salts

All Science Journal Classification (ASJC) codes

  • Chemistry(all)

Cite this

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title = "Phosphonium ions of 2,4,6,8-tetra-tert-butyl-1,3,5,7-tetraphosphacubane and 1,2,5,6-tetraphosphatricyclo[4.2.0.02,5]-octa-3,7-diene in the gas phase: Host-guest complexes, phosphonium ion decomposition pathways and interaction with onium ions (and carbocations). A field desorption (FD), fast atom bombardment (FAB) and tandem mass spectrometry (CAD-MS/MS) study",
abstract = "We report a mass spectrometric study (FDMS, FABMS) of a series of phosphonium triflate salts derived from 2,4,6,8-tetra-tert-butyl-1,3,5,7-tetraphosphacubane 1 and 1,2,5,6-tetraphosphatricyclo[4.2.0.02,5]octa3,7-diene2, namely 3+(OTf)-, 4+(OTf)-, 5+(OTf)-, 62+(OTf·SbCl6)2-, 72+(OTf-SbCl6)2- and 8+(OTf)-. Except for the dications, the intact phosphonium ions were observed in all cases. The host-guest (H-G) chemistry of 3+ and some of its fragment ions with dicyclohexano-24-crown-8 have been probed. Low energy collisional decomposition of 3+ gives m/z 115 and 169 as prominent products for which structures 12+ and 11+ have been suggested in analogy with the recently discovered solution chemistries of phosphaalkynes and phosphirenes. The decomposition pathways of the studied phosphonium cations have been compared and discussed.",
author = "Laali, {Kenneth K.} and Chrys Wesdemiotis and Michael Polce and Sarka Beranova",
year = "1995",
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journal = "Journal of the Chemical Society, Perkin Transactions 2",
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TY - JOUR

T1 - Phosphonium ions of 2,4,6,8-tetra-tert-butyl-1,3,5,7-tetraphosphacubane and 1,2,5,6-tetraphosphatricyclo[4.2.0.02,5]-octa-3,7-diene in the gas phase

T2 - Host-guest complexes, phosphonium ion decomposition pathways and interaction with onium ions (and carbocations). A field desorption (FD), fast atom bombardment (FAB) and tandem mass spectrometry (CAD-MS/MS) study

AU - Laali, Kenneth K.

AU - Wesdemiotis, Chrys

AU - Polce, Michael

AU - Beranova, Sarka

PY - 1995/12/1

Y1 - 1995/12/1

N2 - We report a mass spectrometric study (FDMS, FABMS) of a series of phosphonium triflate salts derived from 2,4,6,8-tetra-tert-butyl-1,3,5,7-tetraphosphacubane 1 and 1,2,5,6-tetraphosphatricyclo[4.2.0.02,5]octa3,7-diene2, namely 3+(OTf)-, 4+(OTf)-, 5+(OTf)-, 62+(OTf·SbCl6)2-, 72+(OTf-SbCl6)2- and 8+(OTf)-. Except for the dications, the intact phosphonium ions were observed in all cases. The host-guest (H-G) chemistry of 3+ and some of its fragment ions with dicyclohexano-24-crown-8 have been probed. Low energy collisional decomposition of 3+ gives m/z 115 and 169 as prominent products for which structures 12+ and 11+ have been suggested in analogy with the recently discovered solution chemistries of phosphaalkynes and phosphirenes. The decomposition pathways of the studied phosphonium cations have been compared and discussed.

AB - We report a mass spectrometric study (FDMS, FABMS) of a series of phosphonium triflate salts derived from 2,4,6,8-tetra-tert-butyl-1,3,5,7-tetraphosphacubane 1 and 1,2,5,6-tetraphosphatricyclo[4.2.0.02,5]octa3,7-diene2, namely 3+(OTf)-, 4+(OTf)-, 5+(OTf)-, 62+(OTf·SbCl6)2-, 72+(OTf-SbCl6)2- and 8+(OTf)-. Except for the dications, the intact phosphonium ions were observed in all cases. The host-guest (H-G) chemistry of 3+ and some of its fragment ions with dicyclohexano-24-crown-8 have been probed. Low energy collisional decomposition of 3+ gives m/z 115 and 169 as prominent products for which structures 12+ and 11+ have been suggested in analogy with the recently discovered solution chemistries of phosphaalkynes and phosphirenes. The decomposition pathways of the studied phosphonium cations have been compared and discussed.

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