Paddlewheel 1,2,4-diazaphospholide distibines with the shortest antimony-antimony single bonds.
One-electron reduction of SbCl3 with the non-innocent 1,2,4-diazaphospholide anion [3,5-R2dp](-) produced straightforwardly three unprecedented paddlewheel distibines [L2(Sb-Sb)L2] (L = η(1),η(1)-3,5-R2dp, R = tBu (4), iPr (5α, 5β), or Cy (6)) with very short Sb-Sb bond lengths (2.6691(8)-2.7451(8) Å). The novel structures were rationalized by DFT calculations.
Institute of Organic Chemistry & College of Chemical and Materials Science, Shanxi Normal University, Gongyuan Street 1, Linfen, Shanxi Province 041004, China. wjzheng_sxnu@qq.com.
Minggang
M
Zhao
Lixia
L
Wang
Xiang
X
Zhang
Wenjun
W
Zheng