Four 5,6-benzo-l,3-oxazine rings are formed by the condensation of resorcarenes with various aliphatic or aromatic primary amines and formaldehyde. From four possible regioisomers only the C4 symmetrical compound is isolated in yields of up to 90%. Semiempirical calculations confirm its relative sta
The tetralithium derivative of the tetrakis(1-naphthylimido)silicate tetraanion
✍ Scribed by Copsey, May C. ;Balakrishna, Maravanji S. ;Chivers, Tristram
- Book ID
- 104486962
- Publisher
- International Union of Crystallography
- Year
- 2006
- Tongue
- English
- Weight
- 231 KB
- Volume
- 62
- Category
- Article
- ISSN
- 1600-5368
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✦ Synopsis
The title compound, bis(diethyl ether-κ__O__)tetra(tetrahydrofuran-κ__O__)[μ~4~-tetrakis(1-naphthylimido)silane(4−)]tetralithium(I) diethyl ether solvate, [Li~4~(C~40~H~28~N~4~Si)(C~4~H~8~O)~4~(C~4~H~10~O)~2~]·C~4~H~10~O, has been structurally characterized. The compound contains the tetrakis(naphthylimido)silicate tetraanion, which is formally isoelectronic with the orthosilicate anion, [SiO~4~]^4−^. The two halves of the molecule are equivalent, related by a crystallographic twofold rotation axis.
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