Sulfate nitrates

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The sulfate nitrates are a family of double salts that contain both

mixed anion compounds. A few rare minerals are in this class. Two sulfate nitrates are in the class of anthropogenic compounds, accidentally made as a result of human activities in fertilizers that are a mix of ammonium nitrate and ammonium sulfate, and also in the atmosphere as polluting ammonia, nitrogen dioxide, and sulfur dioxide react with the oxygen and water there to form solid particles. The nitro group (NO3−) can act as a ligand, and complexes containing it can form salts with sulfate.[1]

List

name formula ratio system space group unit cell volume Å3 density optical references
Darapskite Na3(SO4)(NO3) · H2O 1:1 Monoclinic 2/m a = 10.57 Å, b = 6.91 Å, c = 5.18 Å β = 102.77° 368.98 Biaxial (-) nα = 1.388 nβ = 1.479 nγ = 1.486

2V: 28°

[2]
Humberstonite Na7K3Mg2(SO4)6(NO3)2 · 6H2O 6:2 Trigonal R3 a = 10.905 Å, c = 24.394 Å Z=3 2,512.26 2.252 Uniaxial (-) nω = 1.474 nε = 1.436 [3]
Ungemachite K3Na8Fe(SO4)6(NO3)2 · 6H2O 6:2 Trigonal R3 a = 10.898 Å, c = 24.989 Å 2,570.24 2.287 Uniaxial (-) nω = 1.502 nε = 1.449 [4]
Mbobomkulite Ni0.75Cu0.25Al4(NO3)1.5(SO4)0.5(OH)12•3(H2O) ? Monoclinic P21 a =10.171 b=8.865 c=17.145 β=95.37° 1,539.11 2.45 blue [5]
hydrombobomkulite
Witzkeite Na4K4Ca(NO3)2(SO4)4·2H2O 4:2 Monoclinic C2/c a = 24.902, b = 5.3323, c = 17.246 Å, β = 94.281(7)°, 2283.6 2.40 biaxial (−) α = 1.470, β = 1.495, γ = 1.510, 2V = 50–70° [6]
Artificial
Ammonium sulfate nitrate 2AN.AS (NH4)4SO4(NO3)2 1:2 Monoclinic P21/c a=10.3178 b=11.4014 c=10.2567 β=105.956 z=4
 1160.09 [7][8]
Ammonium sulfate nitrate 3AN.AS (NH4)5SO4(NO3)3 1:3 Monoclinic P21 a=9.9566 b=5.9332 c=12.4161 β=92.817 z=2 732.59 [9][8]
? K(NH4)3(NO3)2SO4 [10]
? K2(NH4)2(NO3)2SO4 [10]
Neodymium sulfate nitrate trihydrate Nd[SO4][NO3]·3H2O 1:1 Monoclinic P21/m a = 6.3056, b = 6.9234, c = 8.9827, β = 93.305° Z=2 Pale violet [11]
Complexes
[Co(2,2'-bipy)2(NO3)]2SO4·(H2O)5 [12]
thiourea complex [Cu4(SCN2H4)7(NO3)](NO3)(SO4) · 3.3H2O Monoclinic P21 a = 12.6072 Å, b = 15.4265 Å, c=22.108 Å, β=120.133° Z=4 [1]

References

  1. ^
    S2CID 104378398
    .
  2. ^ "Darapskite: Mineral information, data and localities". www.mindat.org. Retrieved 2020-05-18.
  3. ^ "Humberstonite: Mineral information, data and localities". www.mindat.org. Retrieved 2020-05-18.
  4. ^ "Ungemachite: Mineral information, data and localities". www.mindat.org. Retrieved 2020-05-18.
  5. ^ "Mbobomkulite Mineral Data". webmineral.com. Retrieved 2020-05-20.
  6. S2CID 94994952
    .
  7. doi:10.1002/zaac.19271600117
    .
  8. ^
    PMID 20484806
    .
  9. ISSN 0021-8561
    .
  10. ^
    ISSN 1683-0377
    .
  11. ISSN 0044-2313
    .
  12. ^ "Hydrothermal synthesis and crystal structure of cobalt(II) complex [Co(2,2'-bipy)2(NO3)]2 SO4·(H2O)5". Chemical Reagents. September 2009. Retrieved 2020-05-21.
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