Synthesis, spectroscopic characterisation of 1,1,2,3,4,5,6-heptahydro-1,1-di(carboxylato)telluranes and 1,3-dihydro-2λ4-benzotellurole-2,2-diyl dicarboxylates
作者:Prakash C Srivastava、Sangeeta Bajpai、Roli Lath、Chhabi Ram、Meena Srivastava、Smriti Bajpai、Ray J Butcher、Michael Zimmer、Michael Veith
DOI:10.1016/s0022-328x(02)01594-2
日期:2002.9
which two oxygen atoms of the unidentate benzoate groups are in the axial positions, two methylene carbon atoms (attached to Te) of C5H10 and C8H8 groups and the stereochemically active electron lone pair occupy equatorial positions. Te⋯O secondary bonds directed polymeric (zig-zag chains) associations are present in C5H10Te(OCOC6H5)2 (cf. trimeric associations in the precursor C5H10TeI2) and tetrameric
1,1,2,3,4,5,6七氢-1,1-二(羧酸根)telluranesÇ 5 ħ 10碲(OCOR)2(R = OCO,C 6 H ^ 5,4-NO 2 C ^ 6 ħ 4,3,5-(NO 2)2 C ^ 6 ħ 3,4-OCH 3 C ^ 6 ħ 4)和1,3-二氢2λ 4 -benzotellurole -2,2-二基二羧酸酯ç 8 ħ 8值Te( OCOR)2(R = CH 3,C 6 H ^ 5,4-NO 2 C ^ 6 ħ4,3,5-(NO 2)2 C ^ 6 ħ 3,4-OCH 3 C ^ 6 ħ 4,4-NH 2 C ^ 6 ħ 4)从的1,1,2,3,4的反应获得, 5,6-七氢-1,1- diiodotellurane和1,3-二氢2λ 4 -benzotellurole -2,2-二基二碘化银羧酸盐。它们通过IR和(1 H,13 C,125 Te)-NMR光谱表征。还描述了代表性配合物的UV,13