کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1506128 993782 2009 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Non-centrosymmetric coordination polymers based on thallium and acetylenedicarboxylate
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Non-centrosymmetric coordination polymers based on thallium and acetylenedicarboxylate
چکیده انگلیسی

Single crystals of anhydrous thallium acetylenedicarboxylate (Tl2(C4O4), 1) and thallium acetylenedicarboxylate oxalate (Tl4(C4O4)(C2O4), 2) precipitated from aqueous solutions containing thallium(I)-acetate and the respective organic acids. Both compounds crystallize in non-centrosymmetric space groups (1: P212121; 2: C2) and contain stereochemically active lone pairs at Tl(I). The crystal structures of 1 and 2 show some similarities. Tl atoms are organized in corrugated layers, which are connected by the respective carboxylate anions. Upon heating 1 decomposes at 195 °C to form elemental pyrophorous thallium powder. 2 starts decomposing at approx. 150 °C forming elemental thallium next to another compound, which could not be identified up to now. TlHADC was also synthesized, but its crystal structure could not be solved either from powder or single crystal diffraction data. Upon heating it decomposes to form 1.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Sciences - Volume 11, Issue 6, June 2009, Pages 1058–1064
نویسندگان
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