Synthesis and characterisation of twelve SnIV diaryls and formation of a SnIII triaryl

摘要: Ten new crystalline compounds of formula (i) [{Sn(ArN2)2(μ-E)}2] [E = O (2), S (3), Se (4), Te (5)], (ii) [Sn(ArN2)2(ER)2] [ER SCH2Ph (6), SePh (7), TePh (8)], (iii) [Sn(ArN2)2(Br)R] [R CH(SiMe3)2 (9), But (10)] and (iv) [Sn(ArN2)2{CH(SiMe3)2}][BPh4] [ArN2 C6H3(NMe2)2-2,6 (11)] have been prepared identified by microanalysis, EI-mass spectrometry multinuclear NMR spectroscopy, for 2, 5, 6, 8 11 single crystal X-ray diffraction. Whereas in the solid state, each latter five has only one its two NMe2 substituents [ArN2]− ligand close to tin atom (<3.1 A), solution at ambient temperature groups are characterised a 1H 13C signal. The known [Sn(ArN2)2(NCE)2] (12), (13)] were synthesised route: redox reaction between [Sn(ArN2)2] (1) 2AgNCE. Irradiation toluene 1 298 K afforded persistent radical assigned as [˙Sn(ArN2)3] (14).