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Decken A, Greer S, Grein F, Mailman A, Mueller B, Paulose TAP, Passmore J, Rautiainen JM, Richardson SA, Schriver MJ, Whidden TK. Absorption of SO2(g) by TDAE[O2SSO2](s) to Give TDAE[O2SS(O)2SO2](s): Related Reactions of [NR4]2[O2SSO2](s) (R = CH3, C2H5). Inorg Chem 2016; 55:5999-6009. [PMID: 27276103 DOI: 10.1021/acs.inorgchem.6b00488] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
One mole equivalent of gaseous SO2 is absorbed by purple TDAE[O2SSO2](s), producing red, essentially spectroscopically pure TDAE[O2SS(O)2SO2](s); under prolonged evacuation, the product loses SO2(g), regenerating TDAE[O2SSO2](s). Similarly, [NR4]2[O2SS(O)2SO2](s) (R = Et, Me) can be prepared, albeit at lower purity, from the corresponding tetraalkylammonium dithionites (prepared by a modification of the known [NEt4]2[O2SSO2](s) preparation). While the [NEt4](+) salt is stable at rt; the [NMe4](+) salt has only limited stability at -78 °C. Vibrational spectra assignments for the anion in these salts were distinctly different from those for the anion in salts containing the long-known [O3SSSO3](2-) dianion, the most thermodynamically stable form of [S3O6](2-) (we prepared TDAE[O3SSSO3]·H2O(s) and obtained its structure by X-ray diffraction and vibrational analyses). The best fit between the calculated ((B3PW91/6-311+G(3df) and PBE0/6-311G(d)) and experimental vibrational spectra were obtained with the dianion having the [O2SS(O)2SO2](2-) structure. Vibrational analyses of the three [O2SS(O)2SO2](2-) salts prepared in this work showed that the corresponding [O3SSO2](2-) salts were present as a ubiquitous decomposition product. The formation of these new [O2SS(O)2SO2](2-) dianion salts was predicted to be favorable for [NMe4](+) and larger cations using a combination of theoretical calculations (B3PW91/6-311+G(3df)) and volume based thermodynamics (VBT). Similar methods accounted for the greater stabilities of the TDAE(2+) and [NEt4](+) salts of [O2SS(O)2SO2](2-) compared to [NMe4]2[O2SS(O)2SO2](s) toward irreversible decomposition to the corresponding [O3SSO2](2-) salts. These salts represent the first known examples of a new class of poly(sulfur dioxide) dianion, [SO2]n(2-) in which n > 2.
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Affiliation(s)
- Andreas Decken
- Department of Chemistry, University of New Brunswick , Fredericton, New Brunswick E3B 5A3, Canada
| | - Scott Greer
- Department of Chemistry, University of New Brunswick , Fredericton, New Brunswick E3B 5A3, Canada
| | - Friedrich Grein
- Department of Chemistry, University of New Brunswick , Fredericton, New Brunswick E3B 5A3, Canada
| | - Aaron Mailman
- Department of Chemistry, University of New Brunswick , Fredericton, New Brunswick E3B 5A3, Canada
| | - Birgit Mueller
- Department of Chemistry, University of New Brunswick , Fredericton, New Brunswick E3B 5A3, Canada
| | - Tressia A P Paulose
- Department of Chemistry, University of New Brunswick , Fredericton, New Brunswick E3B 5A3, Canada
| | - Jack Passmore
- Department of Chemistry, University of New Brunswick , Fredericton, New Brunswick E3B 5A3, Canada
| | - J Mikko Rautiainen
- Laboratory of Inorganic Chemistry, University of Oulu , P.O. Box 3000, Oulu 90014, Finland
| | - Stephanie A Richardson
- Department of Chemistry, University of New Brunswick , Fredericton, New Brunswick E3B 5A3, Canada
| | - Melbourne J Schriver
- Department of Chemistry, Crandall University , P.O. Box 6004, Moncton, New Brunswick E1C 0L7, Canada
| | - Thomas K Whidden
- Department of Chemistry, University of New Brunswick , Fredericton, New Brunswick E3B 5A3, Canada
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Bruna P, Decken A, Greer S, Grein F, Jenkins HDB, Mueller B, Passmore J, Paulose TAP, Rautiainen JM, Richardson S, Schriver MJ. Synthesis of (TDAE)(O2SSO2)(s) and Discovery of (TDAE)(O2SSSSO2)(s) Containing the First Polythionite, [O2SSSSO2]2–. Inorg Chem 2013; 52:13651-62. [DOI: 10.1021/ic4022195] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Pablo Bruna
- Department
of Chemistry, University of New Brunswick, P.O. Box 4400, Fredericton, New Brunswick E3B 5A3, Canada
| | - Andreas Decken
- Department
of Chemistry, University of New Brunswick, P.O. Box 4400, Fredericton, New Brunswick E3B 5A3, Canada
| | - Scott Greer
- Department
of Chemistry, University of New Brunswick, P.O. Box 4400, Fredericton, New Brunswick E3B 5A3, Canada
| | - Friedrich Grein
- Department
of Chemistry, University of New Brunswick, P.O. Box 4400, Fredericton, New Brunswick E3B 5A3, Canada
| | - H. Donald B. Jenkins
- Department
of Chemistry, University of Warwick, Gibbet Hill, Coventry, West Midlands, CV4 7AL United Kingdom
| | - Birgit Mueller
- Department
of Chemistry, University of New Brunswick, P.O. Box 4400, Fredericton, New Brunswick E3B 5A3, Canada
| | - Jack Passmore
- Department
of Chemistry, University of New Brunswick, P.O. Box 4400, Fredericton, New Brunswick E3B 5A3, Canada
| | - Tressia A. P. Paulose
- Department
of Chemistry, University of New Brunswick, P.O. Box 4400, Fredericton, New Brunswick E3B 5A3, Canada
| | - J. Mikko Rautiainen
- Department
of Chemistry, University of Oulu, P.O. Box 3000, 90014 Oulu, Finland
| | - Stephanie Richardson
- Department
of Chemistry, University of New Brunswick, P.O. Box 4400, Fredericton, New Brunswick E3B 5A3, Canada
| | - Melbourne J. Schriver
- Department
of Chemistry, Crandall University, P.O. Box 6004, Moncton, New Brunswick, E1C 9L7, Canada
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