کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9770222 | 1501942 | 2005 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis and characterisation of new ditetrazole-ligands as more rigid building blocks of envisaged iron(II) spin-crossover coordination polymers
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
As the ligand system plays the most important role in the behaviour of the spin-transition of iron(II) spin-crossover compounds a series of eight new mainly bridging di-tetrazole ligands were synthesised and produced new insights into spacer modifications as well as geometric prerequisites of the ligand and their impact on spin-crossover behaviour. The focus laid on aryl-spaced tetrazole ligands, which were interesting analogues to the well-known alkyl-di-tetrazoles due to expected enhanced interaction within the molecular structure through Ï-Ï-stacking. The results of this fundamental study yielded further guidelines to optimize and fine-tune the ligand design, which are envisaged to be used for spin-crossover iron(II) coordination polymers of high T½-values with abrupt spin transition behaviour. Additionally, one new SCO compound [μ-Tris(1-[1,1-dimethyl-2-(1H-tetrazol-1-yl)ethyl]-1H-tetrazole-N4,N4â²)iron(II)] bis(tetrafluoroborate)-[Fe(dtmp)3](BF4)2-is presented. The compound features a spin transition around 160 K with a small thermal hysteresis of 5 K.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Structure - Volume 741, Issues 1â3, 2 May 2005, Pages 159-169
Journal: Journal of Molecular Structure - Volume 741, Issues 1â3, 2 May 2005, Pages 159-169
نویسندگان
Markus Muttenthaler, Matthias Bartel, Peter Weinberger, Gerfried Hilscher, Wolfgang Linert,