Solving the space group uncertainity of hexakis(dimethy1- sulfoxide)thallium(III) perchlorate using X-ray Crystallography and EXAFS techniques
- سال انتشار: 1385
- محل انتشار: چهاردهمین همایش بلور شناسی و کانی شناسی ایران
- کد COI اختصاصی: SCMI14_081
- زبان مقاله: انگلیسی
- تعداد مشاهده: 2051
نویسندگان
چکیده
The structure of the dimethyl sulfoxide solvated thallium(Il1) ion has been studied in dirnethylsulfoxide solution and in the solid state. X-ray crystallography shows a trigonal unit cell, space group R 3 (No. 148), for the [Tl(dmso)~](C104)3 compound with Z = 3, a - b == 1 1.9764(13) [11.8995(9)] A, c = 20.802(2) [20.467(2)] A; V - 2584.0(5) [2509.9(4)] A3, at 295 [150] K. The crystal structure shows a highly symmetric hexakis(dimethylsulfoxide)thallium(I1I) ion with thallium in a 3 symmetry site and a T1-0 bond distance of 2.224(3) A at 295 K. The octahedral T106 kernel is compressed along the three-fold axis with an 0-TI-0 bond angle of 96.20(1 1)'. The TI-0-S bond angle 120.7(2)', corresponds to a TI S distance of 3.292(2) A. One perchlorate ion centered on the 3 axis was described by a statistically disordered model. A low-temperature EXAFS study (10 K) resulted in the TI-0 and TI S distances 2.221(4) and 3.282(6) A, respectively, consistent with a TI-0-S bond angle of 120(1)'. The low Debye-Waller factors confirm a regular coordination without disorder of the dimethylsulfoxide ligands, which would have resulted from the alternative choice of space group, ~ 3for, th e crystal structure.کلیدواژه ها
مقالات مرتبط جدید
- Experimental study of turbulent mixing in the presence of double-diffusive convection and a brief view of its effect on the melting rate in Antarctica
- The ۲۳ and ۲۴ January ۲۰۲۲ Tabriz earthquakes (NW Iran): Seismological study and seismotectonic implication
- Teleseismic estimates of earthquake source slowness as a measure of near-field ground motion: Seismic hazard in Iran
- Study of the seismic activity effect on the uplift rate of salt domes in the Zagros fold and thrust belt, southern Iran by using the InSAR method
- Study Of The Interaction Between The Solar Wind And Mars
اطلاعات بیشتر در مورد COI
COI مخفف عبارت CIVILICA Object Identifier به معنی شناسه سیویلیکا برای اسناد است. COI کدی است که مطابق محل انتشار، به مقالات کنفرانسها و ژورنالهای داخل کشور به هنگام نمایه سازی بر روی پایگاه استنادی سیویلیکا اختصاص می یابد.
کد COI به مفهوم کد ملی اسناد نمایه شده در سیویلیکا است و کدی یکتا و ثابت است و به همین دلیل همواره قابلیت استناد و پیگیری دارد.