| | 1 | Author
| Max Herberhold, Silke Gerstmann, Bernd Wrackmeyer | Requires cookie* | | | Title
| Ethylboration of Stannyl-Substituted Sulfur Diimides  | | | | Abstract
| Bis(sulfurdiimido)tin compounds of the type R2Sn[(NSN)'Bu]2 [R = Me (2a), Et (2b)] re act with triethylborane Et^B by rearrangement and N-ethylation to give the novel amino-borane derivatives R2Sn[N('Bu)SN(Et)BEt2]2 (5a, b), in the same way as "Bu3Sn(NSN)'Bu (1) reacts with Et.^B to give "Bu3Sn[N('Bu)SN(Et)BEt2] (4). In contrast, 2c (R = 'Bu) and tris(sulfurdiimido)tin compounds RSn[(NSN)'Bu]3 [R = Me (3a), "Bu (3d)] react with Et3B mainly by Sn-and S-ethylation, accompanied by extensive decomposition. 'H, "B , 13C, 15N and 119Sn NMR spectroscopy served for the structural assignment in solution. | | | |
Reference
| Z. Naturforsch. 56b, 342—346 (2001); received August 15 2000 | | | |
Published
| 2001 | | | |
Keywords
| Aminoboranes, Organoboration, Sulfur Diimides | | | |
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| default:Reihe_B/56/ZNB-2001-56b-0342.pdf | | | | Identifier
| ZNB-2001-56b-0342 | | | | Volume
| 56 | |
| 2 | Author
| Max Herberhold, Silke Gerstmann, Bernd Wrackmeyer | Requires cookie* | | | Title
| Tetrakis(sulfurdiimido)silane, -germane and -stannane | | | | Abstract
| Two tetrakis(sulfurdiimido)silanes [Si(NSNR)4 (R = rBu la, SiMe3 lb)], two germanes [Ge(NSNR)4 (R = rBu 2a, SiMe3 2b)] and one stannane [Sn(NSN?Bu)4Sn 3a] were prepared and characterised by 'H, l3C, i5N, 29Si and ll9Sn NMR spectroscopy in solution, and 3a was also studied in the solid state by 1 l9Sn CP/MAS NMR. Whereas la,b and 2a,b are monomeric in solution, the 119Sn NMR data suggest that 3a is associated both in solution and in the solid state, and that the tin atoms are hexa-coordinated. The attempted stepwise synthesis of la by using one, two, three or four equivalents of K[(NSN)rBu] led to mixtures of la with Cl3Si(NSNrBu) 4a, Cl2Si(NSN/Bu)2 5a, and ClSi(NSNfBu)3 6a. Only one sulfurdiimido ligand of the silane la reacted with hexachlorodisilane by oxidative addition and cleavage of the Si-Si bond to give the new heterobicyclic derivative 7a which is held together by two different coordinative N-Si bonds. | | | |
Reference
| Z. Naturforsch. 53b, 573—580 (1998); received March 30 1998 | | | |
Published
| 1998 | | | |
Keywords
| Silicon, Germanium, Tin, Sulfur Diimides, Heterocycles, NMR Data | | | |
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| default:Reihe_B/53/ZNB-1998-53b-0573.pdf | | | | Identifier
| ZNB-1998-53b-0573 | | | | Volume
| 53 | |
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