Alkali metal complexes based on bisheterocyclomethanide ligands

摘要: A series of new alkali metal complexes containing deprotonated bisheterocyclomethanide were synthesised and structurally as well spectroscopically characterised. Starting from the neutral bis-(benzoxazol-2-yl)methane ({NCOC6H4}2CH2), obtained by facile deprotonation methylene bridge with nbutyllithium (nBuLi) or potassium hydride. Each resulting [({NCOC6H4}2CH)Li(OEt2)2] (1), [({NCOC6H4}2CH)K(thf)]n (2) [({NCOC6H4}2CH)K(18-crown-6)]n (3) (n → ∞) was analysed in solid state single crystal X-ray diffraction solution various NMR techniques. All compounds show a nearly planar ligand ion chelated two ring nitrogen atoms conjugated C3N2 moiety. Furthermore, water titration experiments revealed that both 2 3 are examples water-stable reactive organo compounds. Due to their hydrolysis stability, these under further investigations deep eutectic solvents.