In situ synthesis, photometric and spectroscopic studies of chelating system during the 1,4,7,10,13,16-hexaoxacyclooctadecane charge transfer reaction with different acceptors
作者:Aisha S.M. Hossan、Hanaa M. Abou-Melha、Moamen S. Refat
DOI:10.1016/j.saa.2011.03.039
日期:2011.8
16-hexaoxacyclooctadecane (18-crown-6) as a rich donor were spectrophotometrically discussed and synthesized in solid form according the interactions with different nine of usual π-acceptors like 2,3,5,6-tetrachlorocyclohexa-2,5-diene-1,4-dione (p-chloranil; p-CHL), tetrachloro-1,2-benzoquinone (o-chloranil; o-CHL), 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ), tetracyanoquinodimethane (TCNQ), 2,6-dichloro
通过分光光度法讨论了1,4,7,10,13,16-六氧杂环十八烷(18-crown-6)的电子供体受体配合物(EDA)的固相形式,并与9种常见π的相互作用进行了固相合成-受体,例如2,3,5,6-四氯环己-2,5-二烯-1,4-二酮(对氯苯醌; p-CHL),四氯-1,2-苯醌(邻氯苯醌; o-CHL) ,2,3-二氯-5,6-二氰基-1,4-苯醌(DDQ),四氰基喹二甲烷(TCNQ),2,6-二氯醌-4-氯酰亚胺(DCQ),2,6-二溴醌-4-氯酰亚胺( DBQ),2,5-二氯-3,6-二羟基-1,4-苯醌(氯苯甲酸; CLA),N-溴琥珀酰亚胺(NBS),2,4,6-三硝基苯酚(苦味酸; PA)。光谱和物理数据,例如形成常数(K CT),消光系数(25 CT),标准自由能(ΔG °),振荡器强度(f),跃迁偶极矩(μ),共振能(R N)和电离电势(I p)在25°C的氯仿或甲醇中进行估