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前文报道了用拉曼光谱证明2,2′-乙撑二氧基-双-(1,2-氧硼杂环戊烷)具有环状和网络状结构的两种互变异构体,分别由1,2-氧硼杂环戊烷基的环呼吸振动谱带(897m~(-1))和OBO变形振动谱带(821cm~(-1))所表征。在15～100℃之间,互变异构平衡符合Van’t Hoff方程,即ln K_c～-1/T为直线。两种互变异构体之间的热焓差ΔH~0=6.03×10~3J/mol。本文报道用拉曼光谱研究2,2′-烷撑二氧基的链结构对2,2′-烷撑二氧基-双-(1,2-氧硼杂环戊烷)类化合物互变异构化的影响。
Raman spectroscopy was previously reported to demonstrate that two tautomers of 2,2’-ethylenedioxy-bis- (1,2-oxaborolane) have a cyclic and network-like structure, respectively The ring was characterized by ring vibration spectra (897m -1) and OBO deformed bands (821cm -1) for 1,2-oxaborolane. At 15 ~ 100 ℃, the tautomerism equals Van’t Hoff equation, that is, ln K_c ~ -1 / T is straight line. The enthalpy difference ΔH ~ 0 between two tautomers is 6.03 × 10 ~ 3J / mol. Raman spectroscopy is reported here to study the effect of the 2,2’-alkylenedioxy chain structure on the conversion of 2,2’-alkylenedioxy-bis- (1,2-oxaborolane) compounds The effect of isomerization.