In:
Main Group Metal Chemistry, Walter de Gruyter GmbH, Vol. 44, No. 1 ( 2021-01-01), p. 51-72
Abstract:
New cyclic and spirocyclic aminosilanes were synthesised using ethylenediamine, 2-aminobenzylamine, 1,8-diaminonaphthalene, o-phenylenediamine, and trans -cyclohexane-1,2-diamine as starting material. These diamines were converted into aminosilanes using silicon tetrachloride and dimethyldichlorosilane directly and via the N,N’ -bis(trimethylsilylated) amino derivatives. 15 new compounds of the type (diamino)(SiMe 3 ) 2 , (diamino) 2 Si, (diamino)SiMe 2 , and (diamino)SiCl 2 have been prepared. The formation of two cyclotrisilazane derivatives was observed starting from ( N,N’ -2-aminobenzylamino)dichlorosilane by trimerisation. All synthesised compounds have been characterised with NMR-, Raman-, or IR-spectroscopy, mass-spectrometry, and boiling or melting point. Single-crystal X-ray structure analyses of several derivatives have been performed. The degree of substitution with trimethylsilyl groups in the final compounds depends on the ring size of the spirocycles. It was shown with quantum chemical calculations on the M062X/6-31G(d) level that trimethylsilyl groups have a stabilising effect on 5-membered ring systems and a destabilising effect on 6-membered rings in these compounds.
Type of Medium:
Online Resource
ISSN:
2191-0219
,
0792-1241
DOI:
10.1515/mgmc-2021-0007
Language:
English
Publisher:
Walter de Gruyter GmbH
Publication Date:
2021
detail.hit.zdb_id:
640138-7
detail.hit.zdb_id:
2602433-0
