ISSN:
0044-2313
Keywords:
1,3-Di-tert-butyl-2,2-dimethyl-4-X-4-Y-1,3,2,4-diazasilagermetidines (X, Y = halide, pseudohalide, alkyl or amino substituent)
;
syntheses
;
reduction
;
1H-NMR
;
X-ray structure analyses
;
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
Cyclic Diazastannylenes. XXXII. On the Synthesis and Reactivity of Difunctional Cyclosilagermadiazanes - Formation of DigermanesThe cyclic bisaminostannylene Me2Si(t-BuN)2Sn 1 reacts with tetrahalides of germanium GeX4(X = Cl, Br, I) forming the bisaminodihalogengermanes 2a, 2b and 2c. The halogen atoms of the compounds 2 may be substituted by alkyl-, amino- and pseudohalide groups: Me2Si(t-BuN)2GeXY (X = Y = N3 3; X = Br, Y = Me 4, Y = t-Bu 6, Y = N(SiMe3)2 8a, Y = NEt2 9; X = Me, Y = N3 5a, Y = CN 5b; X = N3, Y = t-Bu 7, Y = N(SiMe3)2 10; X = I, Y = N(SiMe3)2 8b). Reduction of the compounds 2b and 4 with sodium naphthalide generates the digermanes (Me2Si(t-BuN)2GeR)2 (with R = Br 11, R = Me 12) Compound 8b crystallizes in the monoclinic space group P21/c with Z = 8 and lattice constants a = 16.205(8), b = 19.854(9), c = 17.537(9) Å, β = 107.50(9)°. Compound 11 crystallizes in the triclinic space group P1 with Z = 2 and lattice constants a = 8.921(4), b = 11.091(5), c = 17.590(8) Å, α = 80.5(1), β = 89.2(1), γ = 71.4(1)°.
Notes:
Das cyclische Bisaminotannylen Me2Si(t-BuN)2Sn 1 reagiert mit Germaniumtetrahalogeniden GeX4 (X = Cl Br, I) zu den Bisaminodihalogengermanen 2a, 2b und 2c. Die Halogenatome der Verbindungen 2 können durch Alkyl- und Amino- sowie Pseudohalogengruppen ersetzt werden: Me2Si(t-BuN)2GeXY (X = Y = N3) 3; X = Br, Y = Me 4, Y = t-Bu 6, Y = N(SiMe3)2 8a, Y = NEt2 9; X = Me, Y = N3 5a, Y = CN 5b; X = N3, Y = t-Bu 7, Y = N(SiMe3)2 10; X = I, Y = N(SiMe3)2 (8b). Durch Reduktion der Verbindungen 2b und 4 mit Natriumnaphthalid erhält man die Digermane (Me2Si(t-BuN)2GeR)2 (mit R = Br 11, R = Me 12). Die Verbindung 8b kristallisiert in der monoklinen Raumgruppe P21/c mit Z = 8 und a = 16,205(8), b = 19,854(9), c = 17,537(9) Å, β = 107,50(9)° und die Verbindung 11 kristallisiert in der triklinen Raumgruppe P1 mit Z = 2 und den Gitterkonstanten a = 8,921(4), b = 11,091(5), c = 17,590(8) Å, α = 80,5(1), β = 89,2(1), γ = 71,4(1)°.
Additional Material:
2 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/zaac.19926090304
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