Kurium(III) bromida

Kurium(III) bromida[1]
Nama
Nama lain
  • Kurium tribromida
  • Kurium bromida
Penanda
Model 3D (JSmol)
3DMet {{{3DMet}}}
ChemSpider
Nomor EC
Nomor RTECS {{{value}}}
  • InChI=1S/3BrH.Cm/h3*1H;/p-3
    Key: HKCWOGXVUZTSCB-UHFFFAOYSA-K
  • [Br-].[Br-].[Br-].[Cm]
Sifat
CmBr3
Massa molar 486,782 g/mol
Penampilan Padatan hijau putih atau kuning pucat[2]
Densitas 6,87 g·cm−3[3]
Titik didih 625 °C (1.157 °F; 898 K)
Struktur[4]
Ortorombik
Kecuali dinyatakan lain, data di atas berlaku pada suhu dan tekanan standar (25 °C [77 °F], 100 kPa).
Referensi

Kurium(III) bromida adalah sebuah garam bromida dari kurium.[1] Senyawa ini memiliki struktur kristal ortorombik.[4]

Pembuatan

Kurium bromida dapat diproduksi dengan mereaksikan kurium klorida dan amonium bromida dalam atmosfer hidrogen pada suhu 400–450 °C.[5]

CmCl
3 + 3NH
4Br → CmBr
3 + 3 NH
4Cl

Senyawa ini juga dapat diproduksi dengan mereaksikan kurium(III) oksida dan asam bromida pada suhu 600 °C.[6]

Sifat

Kurium bromida adalah senyawa ionik yang terdiri dari Cm3+ dan Br−, muncul sebagai padatan nirwarna. Senyawa ini memiliki struktur ortorombik, dengan grup ruang Cmcm (No. 63) dan parameter kisi a = 405 pm, b = 1266 pm, dan c = 912 pm.[5] Struktur kristal kurium(III) bromida isostruktural dengan plutonium(III) bromida.

Referensi

  1. ^ a b "Curium tribromide". PubChem. 9 Oktober 2021. Diakses tanggal 10 Februari 2024. 
  2. ^ Ltd, Mark Winter, University of Sheffield and WebElements. "Curium Tribromide". www.webelements.com. Diakses tanggal 10 Februari 2024. 
  3. ^ Gmelins Handbuch der anorganischen Chemie, System Nr. 71, Transurane, Teil C, S. 149.
  4. ^ a b Katz, J.; Seaborg, Glenn. Morss, L; Edelstein, Norman; Fuger, Jean, ed. The Chemistry of the Actinide and Transactinide Elements (3rd ed., Volumes 1-5). hlm. 1417. 
  5. ^ a b Asprey, L. B.; Keenan, T. K.; Kruse, F. H. (Juli 1965). "Crystal Structures of the Trifluorides, Trichlorides, Tribromides, and Triiodides of Americium and Curium". Inorganic Chemistry (dalam bahasa Inggris). 4 (7): 985–986. doi:10.1021/ic50029a013. ISSN 0020-1669. 
  6. ^ Burns, John H.; Peterson, J.R.; Stevenson, J.N. (Maret 1975). "Crystallographic studies of some transuranic trihalides: 239PuCl3, 244CmBr3, 249BkBr3 and 249CfBr3". Journal of Inorganic and Nuclear Chemistry (dalam bahasa Inggris). 37 (3): 743–749. doi:10.1016/0022-1902(75)80532-X. 

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