Hypervalent organoselenium compounds stabilized by intramolecular coordination: synthesis and crystal structures
作者:Krishnan Venkateshwaran、Rajesh Deka、Saravanan Raju、Harkesh B. Singh、Ray J. Butcher
DOI:10.1107/s2053229618014833
日期:2019.1.1
Two novel hypervalent selenium(IV) compounds stabilized by intramolecular interactions, namely 6‐phenyl‐6,7‐dihydro‐5H‐2,3‐dioxa‐2aλ4‐selenacyclopenta[hi]indene, C14H12O2Se, 14, and 5‐phenyl‐5,6‐dihydro‐4H‐benzo[c][1,2]oxaselenole‐7‐carbaldehyde, C14H12OSe2, 15, have been synthesized by the reaction of 2‐chloro‐1‐formyl‐3‐(hydroxymethylene)cyclohexene with in‐situ‐generated disodium diselenide (Na2Se2)
两种新型超价硒(IV)的化合物通过分子内相互作用来稳定,即6-苯基-6,7-二氢-5- ħ -2,3-二氧杂2aλ 4 -selenacyclopenta [喜]茚,C 14 ħ 12 ö 2硒,14,和5-苯基-5,6-二氢-4- ħ -苯并[ c ^ ] [1,2] oxaselenole -7-甲醛,C 14 ħ 12 OSE 2,15,已经通过2-氯的反应合成-1-甲酰基-3-(羟甲基)环己烯与原位生成的二硒化二钠(Na 2 Se 2)。通过FT-IR光谱,ESI-MS和单晶X射线衍射研究对标题化合物进行了表征。对于14,存在全分子疾病,占空度为0.605(10)和0.395(10),C和Se之间有一个双键,五元硒戊二烯环是共面的。通过涉及五元Se / C / C / C / O环之一的质心-质心(Cg … Cg)距离= 3.6472(18)Å和滑移= 1.361Å,使π-π堆积相