Poly[μ2-chlorido-nona­methyl-μ3-nitrato-tritin(IV)]. Corrigendum

Sadiq-ur-Rehman; Sherzaman, S.; Ali, S.; Shahzadi, S.; Helliwell, M.

doi:10.1107/S1600536808017091

addenda and errata

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ISSN: 2056-9890

Volume 64| Part 7| July 2008| Page e26

doi:10.1107/S1600536808017091

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Poly[μ₂-chlorido-nonamethyl-μ₃-nitrato-tritin(IV)]. Corrigendum

Sadiq-ur-Rehman,^a Saira Sherzaman,^a Saqib Ali,^b ^* Saira Shahzadi ^c and Madeleine Helliwell ^d

^aDepartment of Chemistry, University of Azad Jammu and Kashmir, Muzaffarabad, Pakistan, ^bDepartment of Chemistry, Quaid-i-Azam University, Islamabad 45320, Pakistan, ^cDepartment of Chemistry, G.C. University, Faisalabad, Pakistan, and ^dSchool of Chemistry, The University of Manchester, Manchester M13 9PL, England
^*Correspondence e-mail: drsa54@yahoo.com

(Received 4 June 2008; accepted 6 June 2008; online 21 June 2008)

An error in the original formulation of the title compound in the paper by Sadiq-ur-Rehman, Sherzaman, Ali, Shahzadi & Helliwell [Acta Cryst. (2007), E63, m2329 ] is corrected.The title compound in the paper by Sadiq-ur-Rehman, Sherzaman, Ali, Shahzadi & Helliwell [Acta Cryst. (2007), E63, m2329 ] was an unexpected product which seemed to have nitrate coordinated to three Sn atoms. However, it was noticed that the charges do not balance and that it is most likely that the nitrate is in fact a carbonate. Regrettably, there is no material to carry out microanalysis, but a plausible mechanism has been suggested to explain the unexpected formation of the product. Trimethyltin chloride will react with methanol in the presence of a base (4-hydroxypiperidine) to give trimethyltin methoxide, which will rapidly hydrolyze in air to give the hydroxide. Both the methoxide and the hydroxide will react with atmospheric CO₂ to give the carbonate (Bloodworth et al., 1967 ; Blunden et al., 1984 ; Sato, 1967 ). Me₃SnCl + MeOH + base → Me₃SnOMe + base·HCl Me₃SnOMe + H₂O → Me₃SnOH + MeOH Me₃SnOH + CO₂ → Me₃SnOCO₂HMe₃SnOCO₂H + Me₃SnOMe → Me₃SnOCO₂SnMe₃ + MeOH. The carbonate then forms a coordination copolymer with trimethyltin chloride. The name of the title compound is corrected to poly[μ₃-carbonato-μ₃-chlorido-nonamethyltritin(IV)], [Sn₃(CH₃)₉(CO₃)Cl] (M_r = 586.84).

Acknowledgements

We thank Professor Alwyn G. Davies (Department of Chemistry, University College London, UK) for providing the mechanism to explain the unexpected formation of the product.

References

Bloodworth, A. J., Davies, A. G. & Vasishtha, S. V. (1967). J. Chem. Soc. C, pp. 1309–1313. Google Scholar
Blunden, S. J., Hill, R. & Ruddick, J. N. R. (1984). J. Organomet. Chem. 267, C5. CrossRef Web of Science Google Scholar
Sato, H. (1967). Bull. Chem. Soc. Jpn, 40, 410–411. CrossRef CAS Web of Science Google Scholar

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