Ether carbaboranes. Synthesis and characterization of mono- and di-ether carbaboranes with 1,2-closo-C2B10 structures, and their mono- and di-anionic nido-derivatives
作者:Kenneth F. Shaw、Alan J. Welch
DOI:10.1016/s0277-5387(00)83277-5
日期:1992.1
A series of new closo ether carbaboranes 1-R1-2-R2-1,2-closo-C2B10H10 [1; R1 = R2 = (CH2)OCH3: 2; R1 = (CH2)OCH3, R2 = H: 3; R1 = (CH2)2OCH3, R2 = H: 4; R1 = (CH2)3OCH3, R2 = H] have been prepared and characterized. Trends in 11B NMR chemical shifts of 1, 2 and 1,2-closo-C2B10H12 are discussed in terms of the electron-withdrawing properties of the CH2OCH3 group. A single crystal X-ray diffraction study
一系列新的闭合碳醚carbaboranes 1-R 1 -2-R 2 -1,2-闭合碳-C 2乙10 ħ 10 [ 1 ; R 1= R 2=(CH 2)OCH 3:2;R 1= R 2=(CH 2)OCH 3:2。R 1=(CH 2)OCH 3,R 2= H:3;R 1=(CH 2)OCH 3。R 1=(CH 2)2 OCH 3,R 2= H:4;R 1=(CH 2)2 OCH 3。R 1 =(CH 2)3 OCH如图3所示,已经制备并表征了R 2= H]。在趋势11角乙NMR的化学位移1,2和1,2-闭合碳-C 2乙10 ħ 12是在CH的吸电子性质方面讨论2 OCH 3基团。对2的单晶X射线衍射研究表明,通过相互C笼H···O键形成固态二聚体。1和2的部分笼降解可提供[7,8-氨基-C 2 B 9的衍生物H 12 ] -和[7,8-氨基-C 2 B 9 H 11 ] 2−(化合物5-10)。其中之一[BTMA]