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Synthesis and crystal structures of two new tin bis-(carboranylamidinate) complexes.

ABSTRACT: Reaction of 2 equiv. of the lithium carboranylamidinate Li[o-(C2H10B10)C(NCy)(NHCy)] with SnCl2 in THF afforded the stannylene compound bis(N,N'-dicyclohexylamidinatocarboranate)tin(II), SnII[o-(C2H10B10)C(NCy)(NHCy)]2 (1). A similar reaction of SnCl4 with 2 equiv. of Li[o-(C2H10B10)C(N i Pr)(NH i Pr)] unexpectedly afforded the known solvated penta-chlorido-stannate(IV) salt [Li(THF)4][SnCl5(THF)] as the main reaction product. Small amounts of the new chlorido-tin(IV) bis-(carboranylamidinate) bis(N,N'-diiso-propylamidinatocarboranate)chloridotin(IV), SnIVCl[o-(C2H10B10)C(N i Pr)(NH i Pr)][o-(C2H10B10)C(N i Pr)2] (2), were isolated as a by-product. Single-crystal X-ray structure analysis revealed a ?C,?N-chelating coordination of the carboranylamidinate ligands in both 1 and 2. The Sn atom in 1 adopts a pseudo-trigonal-bipyramidal coordination under participation of a stereoactive lone pair. In 2, a trigonal-bipyramidal coordination of Sn is completed by a chlorido ligand.

SUBMITTER: Harmgarth N 

PROVIDER: S-EPMC5730292 | biostudies-literature | 2017 Oct

REPOSITORIES: biostudies-literature

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Synthesis and crystal structures of two new tin bis-(carboranylamidinate) complexes.

Harmgarth Nicole N   Liebing Phil P   Hillebrand Philipp P   Busse Sabine S   Edelmann Frank T FT  

Acta crystallographica. Section E, Crystallographic communications 20170912 Pt 10

Reaction of 2 equiv. of the lithium carboranylamidinate Li[<i>o</i>-(C<sub>2</sub>H<sub>10</sub>B<sub>10</sub>)C(NCy)(NHCy)] with SnCl<sub>2</sub> in THF afforded the stannylene compound bis(<i>N</i>,<i>N</i>'-dicyclohexylamidinatocarboranate)tin(II), Sn<sup>II</sup>[<i>o</i>-(C<sub>2</sub>H<sub>10</sub>B<sub>10</sub>)C(NCy)(NHCy)]<sub>2</sub> (<b>1</b>). A similar reaction of SnCl<sub>4</sub> with 2 equiv. of Li[<i>o</i>-(C<sub>2</sub>H<sub>10</sub>B<sub>10</sub>)C(N <sup><i>i</i></sup> Pr)(NH  ...[more]

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