Boroselenite

The boroselenites are heteropoly anion chemical compounds containing selenite and borate groups linked by common oxygen atoms. They are not to be confused with the boroselenates with have a higher oxidation state for selenium, and extra oxygen. If selenium is replaced by sulfur, it would be a borosulfite. Boroselenites are distinct from selenoborates in which selenium replaces oxygen in borate, or perselenoborates which contain Se-Se bonds as well as Se-B bonds. The metal boroselenites were only discovered in 2012.[1]

List
name chem mw crystal system space group unit cell Å volume density comment references
boroseleniteselenate B2Se3O10 monoclinic P21/c a = 4.3466, b = 7.0237, c = 22.1460, β = 94.922; Z = 4 [2]
Se2B2O7 291.54 orthorhombic P212121 a=7.4815 b=7.8984 c=9.0478 Z=4 534.65 3.622 NLO 2.2 x KDP; band gap 4.64 eV; colourless [3]
Li2SeB8O15 419.32 monoclinic P21/c a=8.641 b=16.282 c=8.415 β=94.426 Z=4 1180.4 2.350 3D;stable to 280 °C; band gap 4.81 eV [4]
NaSeB3O7 246.38 monoclinic P21/c a=4.470 b=15.810 c=8.645 β=98.75 Z=4 603.8 2.710 layered;stable to 290 °C; band gap 4.36 [4]
KSeB3O7 262.49 monoclinic P21/c a=4.5569 b=17.601 c=8.669 β=95.92 Z=4 691.6 2.521 layered stable to 280 °C; band gap 4.30 [4]
K2Se3B2O10 496.70 orthorhombic Pnma a=14.1842 b=15.7516 c=4.7103 Z=4 1052.39 3.135 1D; stable to 330 °C; band gap 4.75 eV [4]
RbSe3B2O9(OH) orthorhombic P212121 a=4.6591 b=11.9288 c=16.332 Z=2 907.7 3.695 band gap 3.79 eV [5]
CsSe3B2O9(OH) orthorhombic P212121 a=4.671 b=12.236 c=16.417 Z=2 1104.84 3.911 band gap 4.17 eV; SHG 0.8 x KDP [5]
Bi2[B2(SeO3)6] 600.67 monoclinic P21/c a=7.4594 b=7.5056 c=13.2486 β=90.04 Z=4 741.75 5.379 birefringence at 1064 nm is 0.090; 0D [6]

References
  1. Kong, Fang; Sun, Chuan-Fu; Yang, Bing-Ping; Mao, Jiang-Gao (2012), Wu, Xin-Tao; Chen, Ling (eds.), "Second-Order Nonlinear Optical Materials Based on Metal Iodates, Selenites, and Tellurites", Structure-Property Relationships in Non-Linear Optical Crystals I, Berlin, Heidelberg: Springer Berlin Heidelberg, vol. 144, pp. 43–103, doi:10.1007/430_2011_65, ISBN 978-3-642-29617-8, retrieved 2021-03-09
  2. Daub, Michael; Scherer, Harald; Hillebrecht, Harald (2015-03-02). "Synthesis, Crystal Structure, and Spectroscopy of the Mixed-Valent Boroseleniteselenate B 2 Se 3 O 10". Inorganic Chemistry. 54 (5): 2325–2330. doi:10.1021/ic502916j. ISSN 0020-1669. PMID 25695146.
  3. Kong, Fang; Huang, Shu-Ping; Sun, Zhong-Ming; Mao, Jiang-Gao; Cheng, Wen-Dan (June 2006). "Se 2 (B 2 O 7 ): A New Type of Second-Order NLO Material". Journal of the American Chemical Society. 128 (24): 7750–7751. doi:10.1021/ja0620991. ISSN 0002-7863. PMID 16771484.
  4. Zhang, Jian-Han; Kong, Fang; Yang, Bing-Ping; Mao, Jiang-Gao (2012). "A series of boroselenite-based open frameworks mediated by the cationic sizes of the alkali metals". CrystEngComm. 14 (24): 8727. doi:10.1039/c2ce26524a. ISSN 1466-8033.
  5. Zhang, Jian-Han; Wang, Qi-Bing; Chen, Chun-Le; Luo, Ju-Xiang; Hu, Chun-Li; Song, Jun-Ling; Mao, Jiang-Gao (2018). "RbSe 3 B 2 O 9 (OH) and CsSe 3 B 2 O 9 (OH): one dimensional boroselenite-based anionic frameworks with second harmonic generation properties". Dalton Transactions. 47 (16): 5764–5770. doi:10.1039/C8DT00390D. ISSN 1477-9226. PMID 29637203.
  6. Tang, Ru-Ling; Hu, Chun-Li; Xie, Wei-Jie; Huang, Qian-Ming; Mao, Jiang-Gao (2021-03-02). "Bi 2 [B 2 (SeO 3 ) 6 ]: A Metal Boroselenite with a Unique Zero-Dimensional [B 2 (SeO 3 ) 6 ] 6– Anionic Group and Large Birefringence". Inorganic Chemistry. 60 (6): 3539–3542. doi:10.1021/acs.inorgchem.1c00210. ISSN 0020-1669. PMID 33650857. S2CID 232088560.
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