کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1310734 975258 2007 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Intensity enhancement of intraligand singlet–triplet π–π∗ transition for the coordinated β-diketonate in Ni(II) complexes with a nitroxide radical
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی معدنی
پیش نمایش صفحه اول مقاله
Intensity enhancement of intraligand singlet–triplet π–π∗ transition for the coordinated β-diketonate in Ni(II) complexes with a nitroxide radical
چکیده انگلیسی

Room temperature and low temperature magnetic circular dichroism (MCD) in the intraligand spin-forbidden singlet–triplet π–π∗ transition for the coordinated β-diketonate ligands were observed for the β-diketonato Ni(II) complexes with a chelated imino or nitronyl nitroxide radical, but not for the β-diketonato Ni(II) complexes without the radical ligands. This is elucidated by the borrowing mechanism from the singlet–singlet π–π∗ transition through the hypothetical interligand β-diketonate-to-radical charge transfer (LLCT) in contrast to the case of Cr(III) complexes.

The intraligand singlet–triplet π–π∗ transition for the coordinated β-diketonate ligands in nitroxide radical Ni(II) complexes is found to be intensified by the borrowing of the singlet–singlet π–π∗ transition intensity through the hypothetical interligand β-diketonate-to-radical charge transfer (LLCT) in contrast to the case of non-radical Ni(II) and Cr(III) complexes.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Inorganica Chimica Acta - Volume 360, Issue 2, 1 February 2007, Pages 649–655
نویسندگان
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