کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1334592 | 1500285 | 2013 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Intercalated iodobismuthate in the layers of azoimidazoles. Structure, photochromism and DFT computation
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی معدنی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Intercalated iodobismuthate in the layers of azoimidazoles. Structure, photochromism and DFT computation Intercalated iodobismuthate in the layers of azoimidazoles. Structure, photochromism and DFT computation](/preview/png/1334592.png)
چکیده انگلیسی
[RaaiRâ², RaaiRâ²H+]3 [Bi3I12]3â are obtained by refluxing BiI3 and RaaiRâ² (1-alkyl-2-(arylazo)imidazoles) in a 2-methoxyethanol-methanol mixture. The X-ray structure determination of [MeaaiMe, MeaaiMeH+]3 [Bi3I12]3â (MeaaiMe = 1-methyl-2-(p-tolylazo)imidazole) has shown that the iodide bridged bismuthate(III) ([Bi3I12]3â) is intercalated in the channels formed by MeaaiMe-MeaaiMeH+. UV light irradiation in DMF solution of the compounds shows E-to-Z (trans-to-cis) isomerisation of the arylazoimidazole about the -NN- group. The reverse transformation, Z-to-E, is very slow with light irradiation, while it is induced by a thermal process. The quantum yield (ÏEâZ) of the E-to-Z isomerisation is dependent on the molar mass and rotor volume of the compounds. The activation energy (Ea) of the Z-to-E isomerisation is calculated by a controlled temperature experiment. DFT computations were performed to explain the spectra and the photochromism.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polyhedron - Volume 54, 30 April 2013, Pages 147-157
Journal: Polyhedron - Volume 54, 30 April 2013, Pages 147-157
نویسندگان
Debashis Mallick, Kamal Krishna Sarker, Rajat Saha, Tapan Kumar Mondal, Chittaranjan Sinha,