Methylzinn- und Methylindium-bis(trimethylsilyl)amide / Methyltin and Methylindium Bis(trimethylsilyl)amides

Abstract

In stitu t für A norganische Chem ie d er U n iversität S tu ttg art, P faffenw aldring 55, D-7000 S tu ttg art 80 Axel Obermeyer M ax -P lanck-Institut für F estkörperforschung, H eisenbergstraße 1, D-7000 S tu ttg a rt 80 Herrn Prof. Dr. Kurt Dehnicke zum 60. Geburtstag gewidm et Z. N aturforsch. 46b, 4 5 9 -4 6 7 (1991); eingegangen am 11. S eptem ber 1990 Z inn-und Indium -bis(trim ethylsilyl)am ide, B is(trim ethylsilyl)am ides, X -R ay, IR Spectra, R am an Spectra, N M R Spectra B rSn[N (SiM e3)2]3 and C lIn[N (SiM e3)2]2 react w ith L iM e O ( C 2H 5)2 (M e = C H 3) in toluene or hexane to give the co rresponding am ido derivatives M eM [N (S iM e3)2]v (M = Sn, x = 3 and M = In, x = 2). These new co m p o u n d s an d the o th e r m em bers o f the h o m o lo g o u s series M e"M [N (SiM e3)2]4 or 3_" are characterized by their IR . R am an und N M R spectra. In addition, the results o f the crystal structure determ in atio n o f M eS n[N (S iM e3)2]3 are reported.

Cationic Brønsted Acids for the Preparation of SnIV Salts: Synthesis and Characterisation of [Ph3Sn(OEt2)][H2N{B(C6F5)3}2],[Sn(NMe2)3(HNMe2)2][B(C6F5)4] and [Me3Sn(HNMe2)2][B(C6F5)4]

“…1 H NMR spectra (300.13 MHz) are referenced to the residual protons of the deuterated solvent used. 13 (4), [38] [Ph 3 C][H 2 N-{B(C 6 F 5 ) 3 } 2 ], [38] MeSn[N(SiMe 3 ) 2 ] 3 , [60] Me 3 SnN(SiMe 3 ) 2 [61] and Sn(NMe 2 ) 4 [62] were prepared according to the literature methods. …”

Comparison of reactivity of C,N-chelated and Lappert’s stannylenes with trimethylsilylazide

“…A similar chemical shift value was reported for Sn[N(SiMe 3 ) 2 ] 3 Br (␦ = -208.3 ppm in benzene-d 6 ) in the literature. 20 Surprisingly, corresponding 119 Sn NMR data for Sn[N(SiMe 3 ) 2 ] 3 Cl are not available despite the synthesis of such compound was described. 21 The central tin atom in 3 is four-coordinated in the solid state as well in solution and adopts a tetrahedral geometry (Fig.…”

The role of the bis-trimethylsilylamido ligand, [N{SiMe3}2]−, in main group chemistry. Part 2: Structural chemistry of the metallic p-block elements

“…The homoleptic Sn(IV) compound Sn(N{SiMe 3 } 2 ) 4 (106) has been reported [93], although structurally characterized examples have been restricted to a maximum of three bis-trimethylsilyl amido ligands in Sn(N{SiMe 3 } 2 ) 3 X (107, X = Cl [93]; 108, X = Br [94]; 109, X = Me [95]). Most examples reported in this section either use stannylene 105 as the source of Sn-N{SiMe 3 } 2 , or introduce this group via metathesis of a tin halide with MN{SiMe 3 } 2 (M = group 1 metal).…”