The borosulfates are heteropoly anion compounds which have sulfate groups attached to boron atoms. Other possible terms are sulfatoborates or boron-sulfur oxides. The ratio of sulfate to borate reflects the degree of condensation. With [B(SO4)4]5- there is no condensation, each ion stands alone. In [B(SO4)3]3- the anions are linked into a chain, a chain of loops, or as [B2(SO4)6]6− in a cycle. Finally in [B(SO4)2] the sulfate and borate tetrahedra are all linked into a two or three-dimensional network. These arrangements of oxygen around boron and sulfur can have forms resembling silicates. The first borosulfate to be discovered was K5[B(SO4)4] in 2012 by the research group of Henning Höppe,[1][2] although the compound class as such had been postulated already in 1962 by G. Schott and H. U. Kibbel.[3] Over 80 unique compounds are known as of 2024.

They are distinct from the borate sulfates which have separate, uncondensed sulfate and borate ions.

Related compounds include boroselenates, borotellurates,[4] and also boroantimonates, borogallates, borogermanates, borophosphates, boroselenites and borosilicates.[5]

Formation

edit

Borosulfates are formed by heating boric oxide, oleum, or sulfuric acid, with metal carbonates. The degree of condensation is varied with the ratio of oleum to sulfuric acid. Pure oleum is more likely to yield compounds with disulfate groups.

Reactions

edit

When heated to around 500 °C the borosulfates decompose by emitting SO3 vapour and form a metal sulfate and boric oxide.[6]

List

edit
chem mw crystal system space group unit cell Å volume density comment references
boron sulfate B2S2O9 229.74 monoclinic C2 a=7.7600 b=4.1664 c=8.6134 β=94.785 Z=2 277.51 2.749 no cations; 3D mesh [7]
H[B(HSO4)4] monoclinic P21/c a=15.6974, b=11.436, c=8.5557; β=90.334°; Z=8 superacid [8][9]
H3O[B(SO4)2] P4/ncc a=9.1377, c=7.3423; Z=4 [9]
H[B(SO4)(S2O7)] monoclinic P21/c a=15.697 b=11.4362 c=8.5557 β=90.334 [4]
Li[B(SO4)2] Pc a = 7.635, b = 9.342, c = 8.432, and β = 92.55° 3D network, like tectosilicate [8][10]
Li[B(S2O7)2] orthorhombic P212121 a = 10.862, b = 10.877, c = 17.769 [8][10]
Li5[B(SO4)4] orthorhombic P21/c a=8.0191 b=10.2111 c=15.0401 [4]
Be[B2(SO4)4] monoclinic C2/c a= 23.856, b= 7.3507, c= 12.3235, β= 98.724(2)°, Z=8 2136.1 2.58 colourless [11]
NH4[B(SO4)2] P4/ncc a=9.1980 c=7.2458 decompose 320 °C, proton conductor [4][12]
NH4[B(S2O7)2] monoclinic Cc a=11.4403 b=14.9439 c=13.8693 β=93.662 [8][4]
(NH4)2B4SO10 271.38 monoclinic C2 a=11.3685 b=6.5541 c=12.8328 β=106.247 4 918.0 1.964 SHG 1.1 × KDP; min PM wavelength 252 nm; decompose 300 °C [13]
[NH4]3[B(SO4)3] 343.12 orthorhombic Ibca a=7.2858 b=14.7048 c=22.7052 Z=8 2433.2 1.928 decompose 320 °C chains [14][2]
Na[B(SO4)2] monoclinic P2/c a=5.434 b=7.570 c=7.766 β=99.74 [4]
Na[B(S2O7)2] monoclinic P21/c a=10.949, b=8.49, c=12.701; β=110.227°; Z=4 [8][9]
Na2B6SO13 orthorhombic Pbca a=11.6569 b=9.4094 c=17.4833 Z=8 1917.6 2.431 birefringence Δn = 0.07 @ 589.3 nm [15]
Na5[B(SO4)4]-I orthorhombic Pca21 a = 10.730, b = 13.891, c = 18.197 [10]
Na5[B(SO4)4]-II orthorhombic P212121 a = 8.624, b = 9.275, c = 16.671 [10]
α-Mg4[B2O(SO4)6] 711.22 trigonal P3 a=8.0165 c=7.4858 Z=1 416.62 2.835 colourless [6]
β-Mg4[B2O(SO4)6] 711.22 hexagonal P3 a = 13.9196, c = 7.4854, Z = 3 1253 2.821 colourless [6]
Mg[B2(SO4)4] 430.17 monoclinic C2/c a = 17.443, b = 5.3145, c = 14.2906 β = 126.323° Z = 4 1067.3 2.677 phyllosilicate structure colourless decompose 550 °C [6]
β-Mg[B2(SO4)4] monoclinic P21/n a=7.9100 b=8.0815 c=9.0376 β=111.37° Z=2 269.01 2.667 colourless decompose 550 °C [16]
Mg3((H2O)B(SO4)3)2 706.94 triclinic P1 a=7.9609 b=7.9671 c=9.2343 α=64.959° β=89.228° γ=60.054° 444.96 2.638 200K [15]
Mg3((H2O)B(SO4)3)2 706.94 R3 a=7.9620 c=24.4231 Z=3 1340.84 2.627 room temperature [15]
K[B(SO4)2] P4/ncc a=8.9739 c=7.4114 [4]
K[B(S2O7)2] monoclinic Cc a=11.3368, b=14.66, c=13.6650; β=94.235°; Z=8 [8][9]
K2B4SO10 313.50 monoclinic C2 a=11.2631 b=6.4339 c=12.649 β=105.707° Z=4 882.4 2.360 colourless [17]
pentapotassium borosulfate K5[B(SO4)4] P41 a=9.9023 c=16.1871 1687.2 2.471 first discovered [8][1]
K3[B(SO4)3] orthorhombic Ibca a = 7.074, b = 14.266, c = 22.58 [8][10]
K4[BS4O15(OH)] monoclinic I2/a a=14.524 b=7.3916 c=15.7857 β=115.50 [4]
CaB2S4O16 monoclinic P21/c a=5.5188 b=15.1288 c=13.2660 β=92.88 sheet [4]
Mn[B2(SO4)4] monoclinic P21/n a = 8.0435, b = 7.9174, c = 9.3082, β = 110.94° Z=2 553.63 colourless [18]
α-Mn4[B2O(SO4)6] 833.74 trigonal P3 a=8.1086 c=7.7509 Z=1 441.3 3.137 colourless [6]
β-Mn4[B2O(SO4)6] 833.74 trigonal P3 a=13.9196 c=7.4854
α-Co[B2(SO4)4] monoclinic C2/c a=17.4254 b=5.3397 c=14.3214 β=126.03° Z=4 269.40 2.860 pink [16]
β-Co[B2(SO4)4] monoclinic P21/n a=7.8892 b=8.1042 c= 9.0409 β=111.29° Z=2 269.29 2.803 pink [16]
α-Co4[B2O(SO4)6] 849.70 trigonal P3 a=7.991 c=7.669 Z=1 418.0 3.376 pink [6]
α-Ni4[B2O(SO4)6] 848.82 trigonal P3 a=7.9359 c=7.4398 Z=1 405.77 3.474 yellow [6]
Cu[B(SO4)2(HSO4)] triclinic P1 a=5.3096 b=7.0752 c=11.1977 α=81.154 β=80.302 γ=80.897 cyclic [4]
Cu[B2(SO4)4] triclinic P1 a=5.2470 b=7.1371 c=7.9222 α=73.814 β=70.692 γ=86.642 chain [4]
Zn[B2(SO4)4] monoclinic P21/n a = 8.0435, b = 7.9174, c = 9.3082, β = 111.26° Z=2 534.36 colourless [18]
α-Zn4[B2O(SO4)6] 875.46 trigonal P3 a=7.9971 c=7.4895 Z=1 414.81 3.505 colourless [6]
Rb2B4SO10 406.24 monoclinic C2 a=11.3127 b=6.5152 c=12.971 β=105.411° Z=4 921.6 2.928 colourless [17]
Rb3[B(SO4)3] orthorhombic Ibca a = 7.2759, b = 14.794, c = 22.637 [10]
Rb4[B2O(SO4)4] orthorhombic Pnma a=8.0415 b=10.647 c=20.425 [4]
Rb5[B(SO4)4] tetragonal P43212 a=10.148 c=16.689 Z=4 band gap 3.99 eV [4][19]
Rb3HB4S2O14 P63/m a = 6.502, c = 19.02 Z=2 [20]
LiRb4[B(SO4)4] 743.8 monoclinic P21 a=7.5551, c=14.560, c=7.5517 β=90.2372 Z=2 transparent [21]
LiRb4[B(SO4)4] 743.8 tetragonal I4 a=7.6128, c=14.631, Z=2 at 500K [21]
Sr[B2(SO4)4] 493.48 orthorhombic Pnma a=12.574 b=12.421 c=7.319 Z=4 1143.1 2.867 decompose 400 °C [8][2]
Sr[B2(SO4)3(S2O7)] 573.54 monoclinic P21/n a = 7.470, b = 15.334, c = 12.220, β = 93.29° Z=4 1397.5 2.726 [8]
Sr[B2O(SO4)3] orthorhombic Pnma a=1657.3 b=12.037 c=4.39484 [8][4]
Sr[B3O(SO4)4(SO4H)] 617.36 monoclinic P21/c a = 11.3309, b= 7.1482, c = 19.355, β = 106.878°, Z = 4 1500.1 2.73 colourless; Sr in 9 coordination by sulfate oxygens [22]
Y2[B2(SO4)6] monoclinic C2/c a=13.5172 b=11.3941 c=10.8994 β=93.447 cyclic [14][4]
Ag[B(SO4)2] P4/ncc a=8.6679 c=7.2897 [4]
Ag[B(S2O7)2] monoclinic P21/c a = 9.507, b = 9.601, c = 11.730, β = 98.35° Z=4 1059.3 2.953 colourless [23]
Cd[B2(SO4)4] [24]
Cd[B2O(SO4)3] 438.20 orthorhombic Pnma a=8.9692 b=11.520 c=8.7275 Z=4 901.8 3.23 colourless [24]
Cd4[B2O(SO4)6] trigonal P3 a=8.2222 c=7.9788 Z=1 467.14 3.78 colourless [24]
(I4)[B(S2O7)2]2 triclinic P1 a = 11.3714 b = 11.5509 c = 12.7811 α = 68.638° β = 68.275° γ = 64.626° Z=2 1366.16 2.999 orange-brown [25]
Cs2B4SO10 501.12 monoclinic C2 a=11.4012 b=6.5997 c=13.5702 β=103.934° Z=4 919.04 3.359 colourless [17]
Cs2[B2O(SO4)3] monoclinic P2/c a=14.765 b=6.710 c=12.528 β=104.50 [20]
Cs3HB4S2O14 P63/m a = 6.5648, c = 19.5669 Z=2 [20]
Cs[B(SO4)(S2O7)] monoclinic P21/c a=10.4525, b=11.319, c=8.2760; β=103.206; Z=4 [8][9]
Cs3Li2[B(SO4)4] monoclinic P21/n a=13.7698 c=8.2376 c=13.9066 β=91.778 [14][4]
Cs3Na2[B(SO4)4] monoclinic P21/c a=13.6406 b=7.9475 c=13.9573 β=990.781 [14][4]
CsK4[B(SO4)4] P43212 a=9.9433 c=16.881 [14][4]
Ba[B2(SO4)4] orthorhombic Pnna a = 12.791, b = 12.800, c = 7.317 Z = 4 [8][26]
Ba[B2O(SO4)3] orthorhombic Pnma a=17.1848 b=12.3805 c=4.4226 [8]
Ba[B(S2O7)2]2 monoclinic I2/a a = 11.6077, b = 8.9144, c = 21.303, β = 104.034° Z = 4 chains [8][26]
La2[B2(SO4)6] monoclinic C2/c a=1379.2 b=1158.9 c=1139.5 β=93.611 cyclic [14][4]
Ce2[B2(SO4)6] monoclinic C2/c 13.740 b=11.5371 c=11.3057 β=93.661 cyclic [14][4]
Pr2[B2(SO4)6] monoclinic C2/c a=13.711 b=11.5305 c=11.2643 β=93.668 cyclic [14][4]
Nd2[B2(SO4)6] monoclinic C2/c a=13.6775 b=11.51.34 11.2046 β=93.5909 cyclic [14][4]
Sm2[B2(SO4)6] monoclinic C2/c a=13.633 b=11.492 c=11.112 β=93.567 cyclic [14][4]
Eu2[B2(SO4)6] monoclinic C2/c a=13.602 b=11.470 c=11.050 β=93.465 cyclic [14][4]
Gd2[B2(SO4)6] monoclinic C2/c a=13.5697 b=11.4426 c=11.0271 β= cyclic [14][4]
Tb2[B2(SO4)6] monoclinic C2/c a=13.5601 b=11.42.48 c=10.9881 β=93.534 cyclic [14][4]
Dy2[B2(SO4)6] monoclinic C2/c a=13.568 b=11.425 c=10.9703 β=93.540 cyclic [14][4]
Ho2[B2(SO4)6] monoclinic C2/c a=13.505 b=11.409 c=10.921 β=93.453 cyclic [14][4]
Er2[B2(SO4)6] monoclinic C2/c a=13.551 b=11.411 c=10.882 β=93.41 cyclic [14][4]
Tm2[B2(SO4)6] monoclinic C2/c a=13.4981 b=11.3617 10.8327 β=93.4500 cyclic [14][4]
Yb2[B2(SO4)6] monoclinic C2/c a=13.495 b=11.3452 c=10.7961 β=93.390 cyclic [14][4]
Lu2[B2(SO4)6] monoclinic C2/c a=13.469 b=11.364 c=10.799 β=93.369 cyclic [14][4]
Pb[B2(SO4)4] 613.05 orthorhombic Pnna a=12.516 b=12.521 c=7.302 Z=4 114.43 3.558 loop chain [4][27]
Pb[B2O(SO4)3] orthorhombic P21/m a=4.4000 b=12.1019 c=8.6043 [4]
Bi2[B2(SO4)6] 659.08 orthorhombic C2/c a = 13.568, b = 11.490, c = 11.106 Z=4 1728.8 3.894 [14]
(H3O)Bi[B(SO4)2]4 1039.72 I4 a=11.857, c=8.149 Z=2 1156.84 2.99 colourless; non-linear optical [14]
(UO2)[B(SO4)2(SO3OH)] 569.52 triclinic P1 a=5.448 b=7.021 c=13.522 α =92.248° β =95.347° γ =101.987° Z=2 3.762 green [28]
(UO2)2[B2O(SO4)3(SO3OH)2] 1058.23 monoclinic P21/n a=10.872 b=11.383 c=14.812 β=92.481 Z=4 3.838 yellow [28]

References

edit
  1. ^ a b Höppe, Henning A.; Kazmierczak, Karolina; Daub, Michael; Förg, Katharina; Fuchs, Franziska; Hillebrecht, Harald (2012-06-18). "The First Borosulfate K5[B(SO4)4]". Angewandte Chemie International Edition. 51 (25): 6255–6257. doi:10.1002/anie.201109237. PMID 22566359.
  2. ^ a b c Netzsch, Philip; Höppe, Henning A. (2020-09-30). "Synthesis and Characterization of the Chain Borosulfates (NH 4 ) 3 [B(SO 4 ) 3 ] and Sr[B 2 (SO 4 ) 4 ]". Zeitschrift für anorganische und allgemeine Chemie. 646 (18): 1563–1569. doi:10.1002/zaac.202000105. ISSN 0044-2313.
  3. ^ Schott, G.; Kibbel, H. U. "Über Sulfatoborate". Zeitschrift für anorganische und allgemeine Chemie. 314 (1–2): 104–112. doi:10.1002/zaac.19623140113. ISSN 0044-2313.
  4. ^ a b c d e f g h i j k l m n o p q r s t u v w x y z aa ab ac ad ae af ag ah ai Bruns, Jörn; Höppe, Henning A.; Daub, Michael; Hillebrecht, Harald; Huppertz, Hubert (2020-06-26). "Borosulfates—Synthesis and Structural Chemistry of Silicate Analogue Compounds". Chemistry – A European Journal. 26 (36): 7966–7980. doi:10.1002/chem.201905449. ISSN 0947-6539. PMC 7384169. PMID 31943390.
  5. ^ Kong, Fang; Ma, Yunxiang; Mao, Jianggao (January 2018). "Lanthanide Inorganic Solids Based on Main Group Borates and Oxyanions of Lone Pair Cations: Lanthanide Inorganic Solids Based on Main Group Borates and Oxyanions of Lone Pair Cations". Chinese Journal of Chemistry. 36 (1): 63–72. doi:10.1002/cjoc.201700597.
  6. ^ a b c d e f g h Netzsch, Philip; Gross, Peter; Takahashi, Hirotaka; Höppe, Henning A. (2018-07-16). "Synthesis and Characterization of the First Borosulfates of Magnesium, Manganese, Cobalt, Nickel, and Zinc". Inorganic Chemistry. 57 (14): 8530–8539. doi:10.1021/acs.inorgchem.8b01234. ISSN 0020-1669. PMID 29957944.
  7. ^ Logemann, Christian; Wickleder, Mathias S. (2013-12-23). "B 2 S 2 O 9 : A Boron Sulfate with Phyllosilicate Topology". Angewandte Chemie International Edition. 52 (52): 14229–14232. doi:10.1002/anie.201307056. PMID 24214383.
  8. ^ a b c d e f g h i j k l m n o Netzsch, Philip; Höppe, Henning A. (2020-11-26). "Sr[B 2 (SO 4 ) 3 (S 2 O 7 )]: A Borosulfate with an Unprecedented Chain Structure Comprising Disulfate Groups". Inorganic Chemistry. 59 (24): 18102–18108. doi:10.1021/acs.inorgchem.0c02560. ISSN 0020-1669. PMID 33241934. S2CID 227175679.
  9. ^ a b c d e Daub, Michael; Kazmierczak, Karolina; Höppe, Henning A.; Hillebrecht, Harald (2013). "The Borosulfate Story Goes on—From Alkali and Oxonium Salts to Polyacids". Chemistry – A European Journal. 19 (50): 16954–16962. doi:10.1002/chem.201303012. ISSN 1521-3765. PMID 24203813.
  10. ^ a b c d e f Daub, Michael; Kazmierczak, Karolina; Gross, Peter; Höppe, Henning; Hillebrecht, Harald (2013-05-20). "Exploring a New Structure Family: Alkali Borosulfates Na 5 [B(SO 4 ) 4 ], A 3 [B(SO 4 ) 3 ] (A = K, Rb), Li[B(SO 4 ) 2 ], and Li[B(S 2 O 7 ) 2 ]". Inorganic Chemistry. 52 (10): 6011–6020. doi:10.1021/ic400267s. ISSN 0020-1669. PMID 23656591.
  11. ^ Sutorius, Stefan; Hanrath, Michael; Bruns, Jörn (2022-02-09). "Be[B2(SO4)4] – A Borosulfate exhibiting Ino- and Phyllosilicate Analogue Topology". European Journal of Inorganic Chemistry. 2022 (11): ejic.202200009. doi:10.1002/ejic.202200009. ISSN 1434-1948. S2CID 246719711.
  12. ^ Ward, Matthew D.; Chaloux, Brian L.; Johannes, Michelle D.; Epshteyn, Albert (October 2020). "Facile Proton Transport in Ammonium Borosulfate—An Unhumidified Solid Acid Polyelectrolyte for Intermediate Temperatures". Advanced Materials. 32 (42): 2003667. Bibcode:2020AdM....3203667W. doi:10.1002/adma.202003667. ISSN 0935-9648. PMID 32924200. S2CID 221672277.
  13. ^ Li, Zijian; Jin, Wenqi; Zhang, Fangfang; Chen, Zilong; Yang, Zhihua; Pan, Shilie (2021-10-09). "Achieving Short-Wavelength Phase-Matching Second Harmonic Generation in Boron-Rich Borosulfate with Planar [BO3] Units". Angewandte Chemie International Edition. 61 (4): anie.202112844. doi:10.1002/anie.202112844. ISSN 1433-7851. PMID 34626043. S2CID 238528455.
  14. ^ a b c d e f g h i j k l m n o p q r s t u Hämmer, Matthias; Bayarjargal, Lkhamsuren; Höppe, Henning A. (2020-11-12). "The First Bismuth Borosulfates Comprising Oxonium and a Tectosilicate-Analogous Anion". Angewandte Chemie International Edition. 60 (3): 1503–1506. doi:10.1002/anie.202011786. ISSN 1433-7851. PMC 7839778. PMID 33026134. 
  15. ^ a b c Fan, Jinbin; Yan, Ziting; Chen, Zilong; Li, Huimin; Yang, Zhihua; Zhang, Fangfang; Pan, Shilie (2024-08-19). "Na2B6SO13 with unprecedented [B6SO13]∞ double chains and largest birefringence among borosulfates induced by the uniform arrangement of [B3O7] units". Science China Chemistry. doi:10.1007/s11426-024-2170-6. ISSN 1674-7291.
  16. ^ a b c Netzsch, Philip; Pielnhofer, Florian; Glaum, Robert; Höppe, Henning A. (2020-11-17). "Synthesis-Controlled Polymorphism and Optical Properties of Phyllosilicate-Analogous Borosulfates M [B 2 (SO 4 ) 4 ] ( M =Mg, Co)". Chemistry – A European Journal. 26 (64): 14745–14753. doi:10.1002/chem.202003214. ISSN 0947-6539. PMC 7756226. PMID 32744744.
  17. ^ a b c Li, Zijian; Jin, Wenqi; Zhang, Fangfang; Yang, Zhihua; Pan, Shilie (2022-11-23). "Exploring Short-Wavelength Phase-Matching Nonlinear Optical Crystals by Employing KBe 2 BO 3 F 2 as the Template". ACS Central Science. 8 (11): 1557–1564. doi:10.1021/acscentsci.2c00832. ISSN 2374-7943. PMC 9686211. PMID 36439311.
  18. ^ a b Pasqualini, Leonard C.; Huppertz, Hubert; Bruns, Jörn (2019-12-17). "M[B2(SO4)4] (M = Mn, Zn)—Syntheses and Crystal Structures of Two New Phyllosilicate Analogue Borosulfates". Inorganics. 7 (12): 145. doi:10.3390/inorganics7120145. ISSN 2304-6740.
  19. ^ Dong, Lingyun; Pan, Shilie; Wang, Ying; Yu, Hongwei; Lin, Xiaoxia; Han, Shujuan (March 2015). "Synthesis and structural characterization of a new rubidium borosulfate, Rb5BS4O16". Materials Research Bulletin. 63: 93–98. doi:10.1016/j.materresbull.2014.11.047.
  20. ^ a b c Daub, Michael; Hillebrecht, Harald (September 2015). "Borosulfates Cs 2 B 2 S 3 O 13 , Rb 4 B 2 S 4 O 17 , and A 3 HB 4 S 2 O 14 ( A = Rb, Cs) – Crystalline Approximants for Vitreous B 2 O 3 ?". European Journal of Inorganic Chemistry. 2015 (25): 4176–4181. doi:10.1002/ejic.201500603. ISSN 1434-1948.
  21. ^ a b Li, Yanqiang; Zhou, Zhengyang; Zhao, Sangen; Liang, Fei; Ding, Qingran; Sun, Junliang; Lin, Zheshuai; Hong, Maochun; Luo, Junhua (2021-03-08). "A Deep-UV Nonlinear Optical Borosulfate with Incommensurate Modulations". Angewandte Chemie International Edition. 60 (20): 11457–11463. doi:10.1002/anie.202102107. ISSN 1433-7851. PMID 33686736. S2CID 232160602.
  22. ^ Pasqualini, Leonard; Huppertz, Hubert; Je, Minyeong; Choi, Heechae; Bruns, Jörn (2021-06-13). "Triple Vertex Linkage of (BO4)-Tetrahedra in a Borosulfate: Synthesis, Crystal Structure, and Quantum Chemical Investigation of Sr[B3O(SO4)4(SO4H)]". Angewandte Chemie International Edition. 60 (36): 19740–19743. doi:10.1002/anie.202106337. ISSN 1433-7851. PMC 8456809. PMID 34121302.
  23. ^ Netzsch, Philip; Höppe, Henning A. (2020-12-29). "Ag[B(S2O7)2]: The First Transition Metal Borosulfate Featuring Disulfate Groups". European Journal of Inorganic Chemistry. 2021 (11): 1065–1070. doi:10.1002/ejic.202001095. ISSN 1434-1948.
  24. ^ a b c Hämmer, Matthias; Höppe, Henning A. (2022-09-02). "The Unconventional Cadmium Borosulfates Cd[B2O(SO4)3] and Cd4[B2O(SO4)6]". Zeitschrift für anorganische und allgemeine Chemie. 648 (21): zaac.202200197. doi:10.1002/zaac.202200197. ISSN 0044-2313. S2CID 252059729.
  25. ^ van Gerven, David; Sutorius, Stefan; Bruns, Jörn; Wickleder, Mathias S. (2022-07-20). "Stabilizing the Homopolycation (I 4 ) 2+ with a Hexasulfate in (I 4 )[S 6 O 19 ] and a Borosulfate in (I 4 )[B(S 2 O 7 ) 2 ] 2". ChemistryOpen. 11 (11): e202200122. doi:10.1002/open.202200122. ISSN 2191-1363. PMC 9630045. PMID 35856862. S2CID 250941699.
  26. ^ a b Netzsch, Philip; Pielnhofer, Florian; Höppe, Henning A. (2020-10-19). "From S–O–S to B–O–S to B–O–B Bridges: Ba[B(S 2 O 7 ) 2 ] 2 as a Model System for the Structural Diversity in Borosulfate Chemistry". Inorganic Chemistry. 59 (20): 15180–15188. doi:10.1021/acs.inorgchem.0c02156. ISSN 0020-1669. PMID 33001636. S2CID 222145994.
  27. ^ Schönegger, Sandra; Bruns, Jörn; Gartner, Benjamin; Wurst, Klaus; Huppertz, Hubert (2018-12-31). "Synthesis and Characterization of the First Lead(II) Borosulfate Pb[B 2 (SO 4 ) 4 ]: Synthesis and Characterization of the First Lead(II) Borosulfate Pb[B 2 (SO 4 ) 4 ]". Zeitschrift für anorganische und allgemeine Chemie. 644 (24): 1702–1706. doi:10.1002/zaac.201800130.
  28. ^ a b Sweet, Teagan F. M.; Felton, Daniel E.; Szymanowski, Jennifer E. S.; Burns, Peter C. (2022-09-01). "Targeting Diverse Bridging Motifs within Actinide Borosulfates and Establishing an Unconventional Structural Hierarchy". Inorganic Chemistry. 61 (40): 15953–15960. doi:10.1021/acs.inorgchem.2c02144. ISSN 0020-1669. PMID 36047685. S2CID 251977898.