A Series of Two-Coordinate Group-15 Element (P, As, Sb, Bi) Centered Radicals Having Bulky Alkyl Groups
A Series of Two-Coordinate Group-15 Element (P, As, Sb, Bi) Centered Radicals Having Bulky Alkyl Groups
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DOI：
10.1246/bcsj.20180057
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发表时间：
2018-07-01
影响因子：
4
通讯作者：
Iwamoto, Takeaki
中科院分区：
文献类型：
--
作者：
Ishida, Shintaro;Hirakawa, Fumiya;Iwamoto, Takeaki
在15族元素化学中，以15族元素为中心的两个配位基团在同一15族原子上带有一个孤立的对和一个未配对的电子，受到了极大的关注。我们以前合成了一个可分离的二烷基膦自由基2，2，5，5-tetrakis(trimethylsilyl)-1-phosphacyclopentane-1-yl(1P)及其锑和铋的类似物(二苯乙烯基自由基1Sb和铋基自由基1Bi)作为持久自由基。本文报道了(1)合成了一种可分离的环状二烷基苯基自由基1As，它在溶液和固体中都以自由基的形式存在；(2)对一系列中性两配位的以烟原为中心的自由基(1P，1As，1Sb，1Bi)进行了全面的研究，包括UV-Vis光谱、氧化还原性质和反应。
Two-coordinate group-15 element centered radicals that bear a lone pair and an unpaired electron on the same group-15 atoms have received much attention in group-15 element chemistry. We previously synthesized an isolable dialkylphosphinyl radical, 2,2,5,5-tetrakis(trimethylsilyl)-1-phosphacyclopentane- 1-yl (1P) and its antimony and bismuth analogues (stibinyl radical 1Sb and bismuthinyl radical 1Bi) as persistent radicals. We report herein (1) synthesis of an isolable cyclic dialkylarsinyl radical 1As that exists in the radical form both in solution and in the solid state and (2) comprehensive study of a series of neutral two-coordinate pnictogen-centered radicals (1P, 1As, 1Sb, 1Bi) including UV-vis spectra, redox properties, and reactions.