کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1506561 1511009 2008 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Isotope effect on metal–insulator transition of (EDO-TTF)2XF6 (X = P, As) with multi-instability of metallic state
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Isotope effect on metal–insulator transition of (EDO-TTF)2XF6 (X = P, As) with multi-instability of metallic state
چکیده انگلیسی

The partially deuterated 4,5-ethylenedioxy-tetrathiafulvalene-d2 (EDO-TTF-d2) was synthesized from the undeuterated EDO-TTF-d0. The single crystals of (EDO-TTF-d2)2XF6 (X = P, As) were prepared by the conventional electrocrystallization technique. The deuterium contents of EDO-TTF-d2 itself and the radical cation salts were 99% D by mass spectral analysis. The magnetic susceptibility measurement revealed that (EDO-TTF-d2)2XF6 undergoes a metal–insulator transition at 2–3 K higher temperature than the undeuterated salts. In infrared and Raman spectra, significant isotope shifts were observed not only on C–H vibrational modes but also on TTF-skeletal modes. The assignment of experimental bands was performed on the basis of normal-mode analysis at B3LYP/6-31G(d,p) level of theory.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Sciences - Volume 10, Issue 12, December 2008, Pages 1780–1785
نویسندگان
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