Extremely strong OH⋯O hydrogen bonds in some 3-organophosphorus substituted pentane-2,4-diones
作者:Alexander M. Polozov、Alexander V. Khotinen、Eugene N. Klimovitskii、Olga N. Kataeva、Igor A. Litvinov
DOI:10.1016/0022-2860(92)87083-8
日期:1992.10
4′-dioxo-3′-pentyl)- trans,trans -4,6-dimethyl-2-oxo-1,3,2-dioxaphosphorinane ( I ) exists in the enol form, exhibiting hydrogen bonding with an R (O⋯O) of 2.397 A. X-ray and NMR data (δ, Δδ(HD)) for 3-organophosphorus substituted pentane-2,4-diones revealed strengthening of the hydrogen bonding by the introduction of phosphorus substituents into pentane-2,4-dione, as a result of steric effects. The content
摘要 单晶 X 射线分析表明 2-(2',4'-dioxo-3'-pentyl)-trans,trans -4,6-dimethyl-2-oxo-1,3,2-dioxaphosphorinane ( I )以烯醇形式存在,与 2.397 A 的 R (O⋯O) 显示氢键。 3-有机磷取代的戊烷-2,4-二酮的 X 射线和核磁共振数据 (δ, Δδ(HD)) 显示由于空间效应,通过将磷取代基引入戊烷-2,4-二酮来加强氢键。烯醇形式的含量也已确定。