Three new Sr-bearing arsenates, hydrothermally synthesized in the system SrO–MO–As2O5–H2O (M2+ = Mg, Cu, Zn)
Објеката
- Тип
- Рад у часопису
- Верзија рада
- објављена верзија
- Језик
- енглески
- Креатор
- Tamara Đorđević, Ljiljana Karanović
- Извор
- European Journal of Mineralogy
- Издавач
- Schweizerbart
- Датум издавања
- 2018
- Сажетак
- During systematic research on the mineral-related synthetic arsenates, with particular focus on their structural and spectroscopic classification, three new Sr-containing arsenates Sr2Mg(AsO4)2· 2H2O (1), Sr2Zn4(AsO4)4·H2O (2) and Sr2Cu7(AsO4)6 (3) have been synthesized under low-temperature hydrothermal conditions in the system SrO MO As2O5 H2O (M 2þ = Mg, Zn, Cu). Their crystal structures were determined using room-temperature single-crystal X-ray diffraction data and refined to the following R-values: 1– R1 = 0.025; 2– R1 = 0.030; 3– R1 = 0.035. Compounds 1 and 2 are structural analogues of two different arsenate minerals: 1 is the Sr analogue of talmessite, Ca2Mg(AsO4)2· 2H2O, and 2 is the Sr analogue of prosperite, Ca2Zn4(AsO4)4· H2O. Compound 1 is the first synthetic compound incorporating kröhnkite-type chains where a divalent cation occupies the interstitial A position (A2M(XO4)2· 2H2O, A = Ca2þ, Naþ; M = Mg2þ, Fe2þ, Mn2þ, Co2þ, Ni2þ, Cu2þ; X = P5þ, As5þ, S6þ). Compound 3 represents the second structurally characterized phase in the ternary SrO CuO As2O5 system besides SrCuAs2O7. The investigation showed that it is isotypic with Pb2Cu7(AsO4)6 and Ba2Cu7(AsO4)6. The CuOx (x = 4, 5, 6) polyhedra in 3 and in Pb and Ba analogues show a wide range of coordination geometries. This article focuses on the similarities and differences in their crystal structures and topology.
- том
- 30
- Број
- 4
- почетак странице
- 785
- крај странице
- 800
- doi
- 10.1127/ejm/2018/0030-2749
- issn
- 0935-1221
- Subject
- стронцијум, арсен, арсенати, кристална структура, дифракција рендгенских зрака на монокристалима, хидротермална синтеза, Раманска спектроскопија
- strontium, arsenic, arsenates, crystal structure, single-crystal X-ray diffraction, hydrothermal synthesis, Raman spectroscopy
- Шира категорија рада
- M20
- Ужа категорија рада
- М22
- Је дио
- Министарство просвете, науке и технолошког развоја Републике Србије (пројекат бр. III45007)
- Права
- Затворени приступ
- Лиценца
- Creative Commons – Attribution 4.0 International
- Формат
Tamara Đorđević, Ljiljana Karanović. "Three new Sr-bearing arsenates, hydrothermally synthesized in the system SrO–MO–As2O5–H2O (M2+ = Mg, Cu, Zn)" in European Journal of Mineralogy, Schweizerbart (2018). https://doi.org/10.1127/ejm/2018/0030-2749
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