Ground and excited state dipole moments of pyranthione and xanthione by the electro-optic method

Hemant K. Sinha*, Osama K. Abou-Zied, Ronald P. Steer

*المؤلف المقابل لهذا العمل

نتاج البحث: المساهمة في مجلةمراجعة النظراء

13 اقتباسات (Scopus)

ملخص

Electric field-induced changes in the absorption spectrum (electrochromism) have been used to obtain the ground (S0) and second excited (S2) state dipole moments of two sulphur-containing heteroaromatics, pyranthione and xanthione, which have C2v symmetry. The magnitude of the change in the dipole moment (Δμ = |μ(S2) - μ(S0)|) was found to be nearly 2 D for both compounds, which is consistent with results reported previously based on microscopic solvent shifts. The transition dipole moment for the S0-S2 transition is parallel to the direction of the ground state dipole moment (μg), i.e. along the C2 axis which contains the CS bond. For comparison the ground state dipole moments of both compounds have also been calculated using the AM1 method will full geometry optimization.

اللغة الأصليةEnglish
الصفحات (من إلى)433-436
عدد الصفحات4
دوريةChemical Physics Letters
مستوى الصوت201
رقم الإصدار5-6
المعرِّفات الرقمية للأشياء
حالة النشرPublished - يناير 8 1993
منشور خارجيًانعم

ASJC Scopus subject areas

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