1402222-83-6Relevant articles and documents
Stable silaimines with three- and four-coordinate silicon atoms
Samuel, Prinson P.,Azhakar, Ramachandran,Ghadwal, Rajendra S.,Sen, Sakya S.,Roesky, Herbert W.,Granitzka, Markus,Matussek, Julia,Herbst-Irmer, Regine,Stalke, Dietmar
, p. 11049 - 11054,6 (2020/09/02)
The reactions of silylenes with organic azides are quite diverse, depending on the substituents of the silylene center and on the nature of the azide employed. Elusive silaimine with three-coordinate silicon atom L 1SiN(2,6-Triip2-C6H3) (5) {L 1 = CH[(C=CH2)(CMe)(2,6-iPr2C6H 3N)2] and Triip = 2,4,6-triisopropylphenyl} was synthesized by treatment of the silylene L1Si (1) with a sterically demanding 2,6-bis(2,4,6-triisopropylphenyl)phenyl azide (2,6-Triip 2C6H3N3). The reaction of Lewis base-stabilized dichlorosilylene L2SiCl2 (2) {L 2 = 1,3-bis(2,6-iPr2C6H3)imidazol-2- ylidene} with Ph3SiN3 afforded four-coordinate silaimine L2(Cl2)SiNSiPh3 (6). Treatment of 2,6-Triip2C6H3N3 with L 3SiCl (3) (L3 = PhC(NtBu)2) yielded silaimine L3(Cl)SiN(2,6-Triip2-C6H3) (7) possessing a four-coordinate silicon atom. The reactions of L 3SiN(SiMe3)2 (4) with adamantyl and trimethylsilyl azide furnished silaimine compounds with a four-coordinate silicon atom L3(N(Ad)SiMe3)SiN(SiMe3) (8) (Ad = adamantyl) and L3(N(SiMe3)2)SiN(SiMe 3) (9). Compound 8 was formed by migration of one of the SiMe 3 groups. Compounds 5-9 are stable under inert atmosphere and were characterized by elemental analysis, NMR spectroscopy, and single-crystal X-ray studies.
