Herstellung von [(CH₃)₃Si]2NSexN[Si(CH₃)₃]₂ (x = 1,2) und neuen Se-S-N-Heterocyclen

Abstract

Reaction of Se(NSO)₂ with TiCl₄ yields the four-membered ring SeN₂S (1) which was isolated as the adduct SeSN₂ · TiCI₄ (2). This adduct forms with AsF₅ (molar ratio 1:1) in SO₂ the ionic compound [SeS₃N₅]⊕[AsF₆]⊖ showing a cage structure for the cation (3). The covalent isomer (4b) of the ionic [ClSe₂N₂S]?Cl₂ (4a) is obtained from Se(NSO)₂ and POCl₃. Lithium bis(trimethylsilyl)amid reacted with Se₂Cl₂ (molar ratio 2:1) to give the bis(disilylamido)-derivatives of Sex, x = 1,2. The monoselenium derivative (5a) forms with SeCl₄in good yields explosive Se₄N₄ and with SCl₂ a salt {SeS₂N₂Cl}₂ (6) of unknown structure.