Zur struktur einiger cyclischer Diorganylzinn—Stickstoff-Verbindungen

Aminostannanes and aminostannylenes containing a C,N-chelated ligand

“…Tin amido chlorides CleSneNRR 0 can adopt different types of structures in solid state (Scheme 1): chloro-bridged dimer B (R ¼ R 0 ¼ SiMe 3 , [11]) and trimer C (R ¼ SiMe 3 , R 0 ¼ Mes, [19] 5). Monomeric structures of the type A are not known to date.…”

“…The (Me 3 Sn) 3 N [3] and ArN(SnMe 3 ) 2 [4] (Ar ¼ 2,6-(diisopropyl)phenyl e Fig. 1) are monomeric, and (t-Bu 2 SnN-t-Bu) 2 is dimeric [5] with planar four membered ring, all of them having planar geometry at nitrogen atoms. On the other hand, in (t-Bu 2 SnNH) 3 , the ring is again planar but the nitrogen atoms display a distorted pyramidal configuration.…”

“…Selected interatomic distances [ A] and angles [ ]; the appropriate parameters for the centrosymmetric polymorph(5) are given in parentheses: Sn1eN1 2.272(3)(2.243…”

Hexakis(2,4,6-triisopropylphenyl)cyclotristannoxane - a Molecular Diorganotin Oxide with Kinetically Inert Sn-O Bonds

“…However, the integration has to be considered as an estimate because errors may arise from poor signal-to-noise ratio and disparate applying cross polarization. It is very likely that cyclo-(t-Bu 2 SnO) 3 , 2 a, and 2 b realize mixed crystals as the trimeric di-tert-butylelement oxides, cyclo-(t-Bu 2 MO) 3 (M = Si, Ge, Sn), [3,4,32,33] cyclo-t-Bu 2 M-(OSnt-Bu 2 ) 2 O (M = Si, Ge), [2,29] and di-tert-butylelement imines cyclo-(t-Bu 2 MNH) 3 (M = Si, Sn) [34,35] all crystallize in the trigonal space group R-3c.…”

Tin: Organometallic Chemistry

“…An electron diffraction structure revealed (Me 3 Sn) 3 3 were shown by X-ray crystallography to be planar. 45 An associated structure was indicated from Mössbauer data for the stannylaziridine compound (43). 1-Tricyclohexyltin-1,2,4-triazole is also associated in the solid state (via Sn-N(4) bridging); in contrast, the more bulky 1-(PhCMe 2 CH 2 ) 3 Sn-2,4-triazole is monomeric.…”