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Issue 1, 2019
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Tetrazastannoles versus distannadiazanes – a question of the tin(II) source

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Various tin(II) compounds such as Mes*2Sn (Mes* = 2,4,6-tri-tert-butylphenyl), Sn[N(SiMe3)2]2 and TerSnCl (Ter = 2,6-bis(2,4,6-trimethylphenyl)phenyl) could be readily oxidised by organic azides to release N2, forming nitrogen-tin compounds. Depending on the used Sn(II) compound, the reactions with two equivalents of azide led to the formation of tetrazastannoles (R2N4SnR′2) or cyclo-distannadiazanes [R2Sn(μ-NR′)]2. The reactivity was independent of the electronic situation of the organic azide. Additionally, Mes*2Sn formed an amido-azido compound of the type R(R′)Sn(N(SiMe3)2)N3 in the presence of Me3SiN3. Presumably, the corresponding tetrazastannole was formed in the first step followed by a ring opening reaction. The same holds true for the reaction of Sn[N(SiMe3)2]2 with Me3SiN3 while TerSnCl showed no reaction in the presence of Me3SiN3, even after prolonged heating.

Graphical abstract: Tetrazastannoles versus distannadiazanes – a question of the tin(ii) source

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The article was received on 26 Oct 2018, accepted on 16 Nov 2018 and first published on 22 Nov 2018

Article type: Paper
DOI: 10.1039/C8DT04295K
Citation: Dalton Trans., 2019,48, 125-132

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    Tetrazastannoles versus distannadiazanes – a question of the tin(II) source

    A. Schulz, M. Thomas and A. Villinger, Dalton Trans., 2019, 48, 125
    DOI: 10.1039/C8DT04295K

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