ISSN:
0009-2940
Keywords:
Cyclotetrasilazane, octamethyl- / Alkali salts, dimeric
;
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Alkali Salts of Octamethylcyclotetrasilazane - Synthesis and Crystal StructuresOctamethylcyclotetrasilazane reacts with n-butyllithium or the elements sodium and potassium to give the alkali salt 1, 2, and 3. 1-3 crystallize as dimeric THF adducts. In the dimers two eight-membered rings are connected by a planar alkali metal-nitrogen four-membered ring. Lithium is tricoordinated in 1, sodium tetracoordinated in 2, and potassium penta- and hexacoordinated in 3. The crystal structures of the alkali salts are discussed and compared with one another. The coordinatively bonded TH in the lithium compound 1 can be exchanged with the Lewis base TMEDA. The crystal structure of 4 shows a higher symmetry than that of 1.
Additional Material:
3 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/cber.19901230203
