Abstract Novel photochromic spirobipyrans containing benzothiazole group in the 2 H -chromene moiety have been synthesized. The spirobipyrans combine with Co 2+ , Ni 2+ , Zn 2+ , and Cu 2+ ions to give intensely colored complexes of merocyanine form with long-wavelength absorption bands at λ > 600 nm.

中文翻译：

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新型光致变色和离子变色苯并噻唑取代的螺比吡喃

摘要 合成了在 2 H -色烯部分含有苯并噻唑基团的新型光致变色螺比吡喃。螺二吡喃与 Co 2+ 、Ni 2+ 、Zn 2+ 和 Cu 2+ 离子结合，形成部花青形式的浓色复合物，在 λ > 600 nm 处具有长波长吸收带。