Cationic bronsted acids for the preparation of Sn-IV salts: Synthesis and characterisation of [Ph3Sn(OEt2)][H2N{B(C6F5)(3)}(2)], [Sn(NMe2)(3)(HNMe2)(2)][B(C6F5)(4)] and [Me3Sn(HNMe2)(2)][B(C6F5)(4)]
Sarazin, Y., Coles, S.J., Hughes, D.L., Hursthouse, M.B. and Bochmann, M. (2006) Cationic bronsted acids for the preparation of Sn-IV salts: Synthesis and characterisation of [Ph3Sn(OEt2)][H2N{B(C6F5)(3)}(2)], [Sn(NMe2)(3)(HNMe2)(2)][B(C6F5)(4)] and [Me3Sn(HNMe2)(2)][B(C6F5)(4)]. European Journal of Inorganic Chemistry, (16), 3211-3220. (doi:10.1002/ejic.200600397).
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Description/Abstract
Ph3SnN(SiMe3)(2) (1) was prepared in good yields by reaction of [{NaN(SiMe3)(2)}(2)center dot THF] (2) with Ph3SnF. Treatment of 1 with [H(OEt2)(2)][H2N{B(C6F5)(3)}(2)] (4) in dichloromethane afforded the stannylium cation [Ph3Sn(OEt2)][H2N{B(C6F5)(3)}(2)] (5), which was characterised by H-1, C-13{H-1}, B-11, F-19 and Sn-119 NMR spectroscopy. The reaction of Sn(NMe2)(4) with [Ph2MeNH][B(C6F5)(4)] (3) gave the amidotin(IV) compound [Sn(NMe2)(3)(HNMe2)(2)][B(C6F5)4] (6) which proved very stable towards ligand substitution and resisted treatment with Et2O, THF, TMEDA and pyrazine. Two new Bronsted acid salts [H(NMe2H)(2)][B(C6F5)(4)] (7). and [(C4H4N2)H center dot OEt2]-[H2N{B(C6F5)(3)}(2)] (8) were synthesised. The reaction of 7 with Sn(NMe2)(4) in Et2O allowed the preparation of 6 in a much improved yield (83%). The treatment of 7 with Me-3-SnN(SiMe3)(2) in Et2O yielded [Me3Sn(HNMe2)(2)][B(C6F5)(4)] (9) nearly quantitatively. Compounds 1, 2, 6, 8 and 9 were characterised by single-crystal X-ray diffraction analyses; 6 is the first example of a structurally characterised amidotin(IV) cation.
| Item Type: | Article |
|---|---|
| ISSNs: | 1434-1948 (print) |
| Related URLs: | |
| Keywords: | tin, cations, n ligands, anions opening polymerization reactions, pincer-type ligand, crystal-structure, o,c,o-chelating ligands, organotin compounds, solid-state, complexes, zinc, catalysts, ion |
| Subjects: | Q Science Q Science > QD Chemistry |
| Divisions: | University Structure - Pre August 2011 > School of Chemistry |
| Item ID: | 44539 |
| Date Deposited: | 02 Mar 2007 |
| Last Modified: | 01 Jun 2011 14:31 |
| Contributors: | Sarazin, Y. (Author) Coles, S.J. (Author) Hughes, D.L. (Author) Hursthouse, M.B. (Author) Bochmann, M. (Author) |
| Date: | 2006 |
| Status: | Published |
| URI: | http://eprints.soton.ac.uk/id/eprint/44539 |
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