Di- and Triorganotin(￥3) Complexes of Sulfur-containing Ylidenemalonates

摘要

Organotin(コ) complexes of ylidenemalonates (RxSn)x-1(O2C)2C=C(SR`)2 (R = n-C4H9, C6H5, cyclo-C6H11, CH3OOCCH2CH2; x= 2,3; R`= CH3, R2`=-CHCH-,-CH2CH2-) have been synthesized and characterized by means of various spectroscopic methods. The X-ray crystal structure of (Ph3Sn)2(O2C)2C=C(SCH3)2 has been determined (Pi; a= 9.704(2) ∈, b= 14.412(1) ∈, c= 14.760(3) ∈, メ=74.26(1)∑, モ=99.38(l)∑, ャ=79.09(1)∑, V= 1950.7(7) ∈3) and refined to R= 0.045. The crystal structure discloses a discrete molecule with bidentate-like carboxylate ligand. For diorganotin analogues, the structures are discussed in terms of IR, 1H-NMR, 13C-NMR, and FAB mass spectrometry. The mass spectrum indicates that the diorganotin complexes of ylidenemalonates are dimeric.