| Download | - View final version: Chlorine-35 solid-state nuclear magnetic resonance spectroscopy as an indirect probe of the oxidation number of tin in tin chlorides (PDF, 3.1 MiB)
|
|---|
| DOI | Resolve DOI: https://doi.org/10.1021/acs.inorgchem.0c02025 |
|---|
| Author | Search for: Lucier, Bryan E. G.ORCID identifier: https://orcid.org/0000-0002-9682-4324; Search for: Terskikh, Victor V.1ORCID identifier: https://orcid.org/0000-0003-1514-2610; Search for: Guo, Jiacheng; Search for: Bourque, Jeremy L.; Search for: Mconie, Sarah L.; Search for: Ripmeester, John A.2ORCID identifier: https://orcid.org/0000-0002-4091-5120; Search for: Huang, YiningORCID identifier: https://orcid.org/0000-0001-9265-5896; Search for: Baines, Kim M.ORCID identifier: https://orcid.org/0000-0001-6515-5749 |
|---|
| Affiliation | - National Research Council of Canada. Metrology Research Centre
- National Research Council of Canada. Security and Disruptive Technologies
|
|---|
| Format | Text, Article |
|---|
| Subject | granular materials; platinum; anions; oxidation; nuclear magnetic resonance spectroscopy |
|---|
| Abstract | Ultrawideline ³⁵Cl solid-state nuclear magnetic resonance (SSNMR) spectra of a series of 12 tin chlorides were recorded. The magnitude of the ³⁵Cl quadrupolar coupling constant (CQ) was shown to consistently indicate the chemical state (oxidation number) of the bound Sn center. The chemical state of the Sn center was independently verified by tin Mössbauer spectroscopy. CQ(³⁵Cl) values of >30 MHz correspond to Sn(IV), while CQ(³⁵Cl) readings of <30 MHz indicate that Sn(II) is present. Tin-119 SSNMR experiments would seem to be the most direct and effective route to interrogating tin in these systems, yet we show that ambiguous results can emerge from this method, which may lead to an incorrect interpretation of the Sn oxidation number. The accumulated ³⁵Cl NMR data are used as a guide to assign the Sn oxidation number in the mixed-valent metal complex Ph₃PPdᴵᵐSnCl₂. The synthesis and crystal structure of the related Ph₃PPtᴵᵐSnCl₂ are reported, and ¹⁹⁵Pt and ³⁵Cl SSNMR experiments were also used to investigate its Pt–Sn bonding. Plane-wave DFT calculations of ³⁵Cl, ¹¹⁹Sn, and ¹⁹⁵Pt NMR parameters are used to model and interpret experimental data, supported by computed ¹¹⁹Sn and ¹⁹⁵Pt chemical shift tensor orientations. Given the ubiquity of directly bound Cl centers in organometallic and inorganic systems, there is tremendous potential for widespread usage of ³⁵Cl SSNMR parameters to provide a reliable indication of the chemical state in metal chlorides. |
|---|
| Publication date | 2020-09-21 |
|---|
| Publisher | American Chemical Society |
|---|
| Licence | |
|---|
| In | |
|---|
| Language | English |
|---|
| Peer reviewed | Yes |
|---|
| Export citation | Export as RIS |
|---|
| Report a correction | Report a correction (opens in a new tab) |
|---|
| Record identifier | 98a03cf7-806d-4637-9ed1-0d108204e564 |
|---|
| Record created | 2021-05-11 |
|---|
| Record modified | 2021-05-12 |
|---|
