کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1337198 1500277 2013 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis, crystal structure and optical features of new Hg–Se clusters
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی معدنی
پیش نمایش صفحه اول مقاله
Synthesis, crystal structure and optical features of new Hg–Se clusters
چکیده انگلیسی

Hg(SePh)2 reacts respectively with the chemical mixtures HgI2/2,2′-bipyridine, HgI2/1,10-phenantroline, HgI2/triphenylphosphine and HgBr2/ 2,2′-bipyridine to give the cluster compounds [Hg4I4(SePh)4(2,2-bipy)2]·2dmf (Ph = phenyl; dmf = dimethylformamide) (1), [Hg4I2(SePh)6(phen)2] (2), [Hg8I2Se(SePh)12(dmf)2] (3) and [Hg8Br5Se(SePh)9(2,2-bipy)2] (4). The 8-membered ring 1 alternates mercury and selenium atoms. Cluster 2 presents similar structure, but contains six [Se–Ph]− units and only two iodine ions. The bulky nanoclusters 3 and 4 differ mainly with respect to the existence of terminal and bridging bromide ions in 4. With basis on the Kubelka–Munk function the optical band gap of the title compounds could be determined by measuring their UV–Vis diffuse reflectance spectra.

Hg(SePh)2 reacts with HgI2/2,2′-bipyridine, HgI2/1,10-phenantroline, HgI2/triphenylphosphine and HgBr2/2,2′-bipyridine to give the respective clusters [Hg4I4(SePh)4(2,2-bipy)2]·2dmf (Ph = phenyl; dmf = dimethylformamide), [Hg4I2(SePh)6(phen)2], [Hg8I2Se(SePh)12(dmf)2] (3) and [Hg8Br5Se(SePh)9(2,2-bipy)2] (4). The bulky nanoclusters 3 and 4 differ mainly with respect to the existence of terminal and bridging bromide ions in 4. The optical band gaps of the title compounds were determined by measuring their UV–Vis diffuse reflectance spectra.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polyhedron - Volume 62, 7 October 2013, Pages 126–132
نویسندگان
, , ,