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

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

Authors :
Harmgarth N
Liebing P
Hillebrand P
Busse S
Edelmann FT
Source :
Acta crystallographica. Section E, Crystallographic communications [Acta Crystallogr E Crystallogr Commun] 2017 Sep 12; Vol. 73 (Pt 10), pp. 1443-1448. Date of Electronic Publication: 2017 Sep 12 (Print Publication: 2017).
Publication Year :
2017

Abstract

Reaction of 2 equiv. of the lithium carboranylamidinate Li[ o -(C <subscript>2</subscript> H <subscript>10</subscript> B <subscript>10</subscript> )C(NCy)(NHCy)] with SnCl <subscript>2</subscript> in THF afforded the stannylene compound bis( N , N '-dicyclohexylamidinatocarboranate)tin(II), Sn <superscript>II</superscript> [ o -(C <subscript>2</subscript> H <subscript>10</subscript> B <subscript>10</subscript> )C(NCy)(NHCy)] <subscript>2</subscript> ( 1 ). A similar reaction of SnCl <subscript>4</subscript> with 2 equiv. of Li[ o -(C <subscript>2</subscript> H <subscript>10</subscript> B <subscript>10</subscript> )C(N <superscript> i </superscript> Pr)(NH <superscript> i </superscript> Pr)] unexpectedly afforded the known solvated penta-chlorido-stannate(IV) salt [Li(THF) <subscript>4</subscript> ][SnCl <subscript>5</subscript> (THF)] as the main reaction product. Small amounts of the new chlorido-tin(IV) bis-(carboranylamidinate) bis( N , N '-diiso-propylamidinatocarboranate)chloridotin(IV), Sn <superscript>IV</superscript> Cl[ o -(C <subscript>2</subscript> H <subscript>10</subscript> B <subscript>10</subscript> )C(N <superscript> i </superscript> Pr)(NH <superscript> i </superscript> Pr)][ o -(C <subscript>2</subscript> H <subscript>10</subscript> B <subscript>10</subscript> )C(N <superscript> i </superscript> Pr) <subscript>2</subscript> ] ( 2 ), were isolated as a by-product. Single-crystal X-ray structure analysis revealed a κC , κN -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.

Details

Language :
English
ISSN :
2056-9890
Volume :
73
Issue :
Pt 10
Database :
MEDLINE
Journal :
Acta crystallographica. Section E, Crystallographic communications
Publication Type :
Academic Journal
Accession number :
29250355
Full Text :
https://doi.org/10.1107/S2056989017012671