Novel Si–Sn ring systems with distanna and tristanna moieties
摘要:
The synthesis of new cyclic stannaoligosilanes 9, 10 and 11 with a bridging tin-tin unit [((Bu2Sn)-Bu-t)(2)(SiMe2)(n), n = 2, 9; n = 3; 10; n = 4, 11] or an Sn-3 moiety [((Bu2Sn)-Bu-t)(3)(SiMe2)(2)] (12) are reported. All compounds are fully characterised by NMR, mass spectroscopy and elemental analysis. The structure of the five-membered ring 10 is determined by X-ray crystallography. (C) 1999 Elsevier Science S.A. All rights reserved.