Steric effects in di- and tri-arylmethane dyes. Part X. Electronic absorption spectra of bridged derivatives of malachite green and crystal violet
作者:C. Aaron、C. C. Barker
DOI:10.1039/j29710000319
日期:——
The isopropylidene group has been introduced singly and doubly into ortho-positions of Malachite Green and Crystal Violet in order to determine molecular conformation. The electronic absorption spectra of these dyes are discussed with particular reference to their bearing on intensity variations of the first band of ortho-derivatives of Malachite Green. The introduction of two isopropylidene bridges
为了确定分子构象,已将异亚丙基单独和双重引入孔雀绿和结晶紫的邻位。讨论这些染料的电子吸收光谱时,特别要参考它们对孔雀石绿邻位衍生物第一带的强度变化的影响。在孔雀石绿和结晶紫中引入两个异亚丙基桥会产生相当大的红移,这只能归因于芳基核的扭曲。