Silyl stabilized azanes: Reactions of mono- and dilithium bis(trimethylsilyl)hydrazide with dichloro- and tetrachlorostannane |
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Authors: | J. Kataria P. Mayer P. Venugopalan |
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Affiliation: | a Department of Chemistry, Panjab University, Chandigarh 160 014, India b Dept. Chemie, Univ. LMU, Butenandt Str. 5-13, Haus-D, 81377-München, Germany |
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Abstract: | SnCl4 acts primarily as an oxidant and oxidizes monolithium bis(trimethylsilyl) hydrazide 1 to mainly bis(trimethylsilyl)amine, BSA and tris(trimethylsilyl)hydrazine, TrSH and itself get reduced to SnCl2. Similarly, reaction of SnCl4 with dilithiumbis(trimethylsilyl) hydrazide 2, oxidizes it to lithium tris(trimethylsilyl)hydrazide, Li-TrSH. Reaction of dichlorostannane (reduction of oxidation state of tin from +4 to +2) with 1 gives a simple substitution reaction and give a pale yellow solid, 1,4-bis(trimethylsilyl)-1,2,4,5-tetraza-3,6-distannacyclohexane, 3b. Whereas, in reaction of 2 with SnCl2 intermediate stannimine [(Me3Si)2N-N Sn], tetramerizes and further loses tetrakis(trimethylsilyl)tetrazene, TST to give a cubane compound [(Me3Si)N-Sn]4, 4. |
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Keywords: | Monolithiumbis(trimethylsilyl)hydrazide Dilithiumbis(trimethylsilyl) hydrazide Bis(trimethylsilyl)amine Lithiumtris(trimethylsilyl)hydrazide 1,4-Bis(trimethylsilyl)-1,2,4,5-tetraza-3,6-Distannacyclohexane Stannimine |
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