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Polymorphism of NaHg: The First Experimental Observation of a Reversible, Temperature Driven B2 (CsCl) - B32 (NaTl) Phase Transition

Matthiasand Rochnia ; Anorganische Chemie II, Fb8, Universitat-GH Siegen, D-57068 Siegen
Hans-Jörg Deiseroth ; Anorganische Chemie II, Fb8, Universitat-GH Siegen, D-57068 Siegen

Puni tekst: engleski, pdf (17 MB) str. 701-708 preuzimanja: 124* citiraj
APA 6th Edition
Rochnia, M. i Deiseroth, H. (1995). Polymorphism of NaHg: The First Experimental Observation of a Reversible, Temperature Driven B2 (CsCl) - B32 (NaTl) Phase Transition. Croatica Chemica Acta, 68 (4), 701-708. Preuzeto s https://hrcak.srce.hr/136688
MLA 8th Edition
Rochnia, Matthiasand i Hans-Jörg Deiseroth. "Polymorphism of NaHg: The First Experimental Observation of a Reversible, Temperature Driven B2 (CsCl) - B32 (NaTl) Phase Transition." Croatica Chemica Acta, vol. 68, br. 4, 1995, str. 701-708. https://hrcak.srce.hr/136688. Citirano 27.02.2021.
Chicago 17th Edition
Rochnia, Matthiasand i Hans-Jörg Deiseroth. "Polymorphism of NaHg: The First Experimental Observation of a Reversible, Temperature Driven B2 (CsCl) - B32 (NaTl) Phase Transition." Croatica Chemica Acta 68, br. 4 (1995): 701-708. https://hrcak.srce.hr/136688
Harvard
Rochnia, M., i Deiseroth, H. (1995). 'Polymorphism of NaHg: The First Experimental Observation of a Reversible, Temperature Driven B2 (CsCl) - B32 (NaTl) Phase Transition', Croatica Chemica Acta, 68(4), str. 701-708. Preuzeto s: https://hrcak.srce.hr/136688 (Datum pristupa: 27.02.2021.)
Vancouver
Rochnia M, Deiseroth H. Polymorphism of NaHg: The First Experimental Observation of a Reversible, Temperature Driven B2 (CsCl) - B32 (NaTl) Phase Transition. Croatica Chemica Acta [Internet]. 1995 [pristupljeno 27.02.2021.];68(4):701-708. Dostupno na: https://hrcak.srce.hr/136688
IEEE
M. Rochnia i H. Deiseroth, "Polymorphism of NaHg: The First Experimental Observation of a Reversible, Temperature Driven B2 (CsCl) - B32 (NaTl) Phase Transition", Croatica Chemica Acta, vol.68, br. 4, str. 701-708, 1995. [Online]. Dostupno na: https://hrcak.srce.hr/136688. [Citirano: 27.02.2021.]

Sažetak
Based on combined X-ray analyses and thermal investigations, the intermetallic compound NaHg is shown to exist in three different modifications (a-, (1- and y-NaHg). The already known low temperature modification a-NaHg is an orthorhombically distorted variant of the CsCl (B2) structure. At 165 °C, a-NaHg transforms in a reconstructive first order transition of (1-NaHg, a slightly rhombo- hedrally distorted variant of the NaTl (B32) type (a = 5.071(8), c = 12.668(31) A, space group R3m). In a subsequent displacive first order transition at 176 °C, y-NaHg, crystallizing in the undistorted cubic NaTl (B32) type (a = 7.253, Å, space group: Fd3m), is formed. To our knowledge, this is the first observation of a temperature driven B2/B32 phase transition.

Hrčak ID: 136688

URI
https://hrcak.srce.hr/136688

Posjeta: 270 *