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- W2322308315 abstract "The lithium derivative of di(isopropyl)aminofluorosilylhydrazine cyclizes with formation of a five-membered silylhydrazine ring system (1). The analogous reaction of di(tert-butyl)- fluorosilylhydrazine gives the six-membered silylhydrazine ring system (2 ). 1 isomerizes thermally to the six-membered cyclic silylhydrazine 3. LiF-elimination from lithiated (Me 3 C) 2- SiFNHNHSiF(CHMe 2 ) 2 leads to the formation of the six-membered cyclic silylhydrazine 4, [(Me 2 HC) 2 Si-NH-NSiF(CMe 3 ) 2 ] 2 . Symmetrical six-membered tetra(fluoro)silylhydrazine rings, (F 2 SiNRNR) 2 (5: R = SiMe 3 , 6: R = SiMe 2 CMe 3 ) are obtained in the reaction of bis(trifluorosilyl)hydrazines with dilithium-bis(silyl)hydrazides, whereas a five-membered unsymmetrical silylhydrazine (7: (RNSiF 2 ) 2 N-NR' 2 , R = SiMe 2 CMe 3 , R′ = SiMe 3 ) is formed in the reaction of R(SiF 3 )N-N(SiF 3 )R and R'(Li)N-N(Li)R'. In the reaction of the same fluorosilylhydrazine with dilithiated N,N'-diphenylhydrazide the unsymmetrical six-membered ring 8 is obtained. The crystal structures of 1, 2 and 3 are reported." @default.
- W2322308315 created "2016-06-24" @default.
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- W2322308315 date "2000-06-01" @default.
- W2322308315 modified "2023-10-18" @default.
- W2322308315 title "Cyclische Silylhydrazine - Kristallstrukturen isomerer fünf- und sechsgliedriger Ringe / Cyclic Silylhydrazines - Crystal Structures of Isomeric Five- and Six-Membered Rings" @default.
- W2322308315 doi "https://doi.org/10.1515/znb-2000-0611" @default.
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