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Formation of an Imino-Stabilized Cyclic tin(II) Cation From an Amino(imino)stannylene

Formation of an Imino-Stabilized Cyclic tin(II) Cation From an Amino(imino)stannylene

Tatsumi Ochiai, Daniel Franz, Elisabeth Irran, Shigeyoshi Inoue

Chemistry. 2015 Apr 27;21(18):6704-7.

PMID: 25766259

Abstract:

The novel amino(imino)stannylene 1 was prepared by conversion of HNIPr (NIPr = bis(2,6-diisopropylphenyl)imidazolin-2-imino) with one equivalent of Lappert's tin reagent (Sn[N(SiMe3)2]2). Treatment of 1 with DMAP (4-dimethylaminopyridine) yields its Lewis acid-base adduct 2. The reaction of 1 with one equivalent of trimethylsilyl azide results in replacement of the amino group at the tin center by an N3 substituent with concomitant elimination of N(SiMe3)3 to afford dimeric [N3SnNIPr]2 (3). Remarkably, the reaction of 1 with B(C6F5)3 produces the novel tin(II) monocation 4(+)[MeB(C6F5)3](-) comprising a four-membered stannacycle through methyl-abstraction from the trimethylsilyl group.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP59863137	Bis[bis(trimethylsilyl)amino]tin(II)		59863-13-7	Price

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