---
_id: '47987'
abstract:
- lang: eng
  text: <jats:title>Abstract</jats:title><jats:p>Pure samples of colorless, air‐stable
    Ba(BO<jats:sub>2</jats:sub>OH) crystals were obtained from Ba(NO<jats:sub>3</jats:sub>)<jats:sub>2</jats:sub>
    and H<jats:sub>3</jats:sub>BO<jats:sub>3</jats:sub> under the ultra‐alkaline conditions
    of a KOH hydroflux at about 250 °C. The product formation depends on the water‐base
    molar ratio and the molar ratio of the starting materials. B(OH)<jats:sub>3</jats:sub>
    acts as a proton donor (Brønsted acid) rather than a hydroxide acceptor (Lewis
    acid). Ba(BO<jats:sub>2</jats:sub>OH) crystallizes in the non‐centrosymmetric
    orthorhombic space group <jats:italic>P</jats:italic>2<jats:sub>1</jats:sub>2<jats:sub>1</jats:sub>2<jats:sub>1</jats:sub>.
    Hydrogen bonds connect the almost planar (BO<jats:sub>2</jats:sub>OH)<jats:sup>2−</jats:sup>
    anions, which are isostructural to HCO<jats:sub>3</jats:sub><jats:sup>−</jats:sup>,
    into a syndiotactic chain. IR and Raman spectroscopy confirm the presence of hydroxide
    groups, which are involved in weak hydrogen bonds. Upon heating in air to about
    450 °C, Ba(BO<jats:sub>2</jats:sub>OH) dehydrates to Ba<jats:sub>2</jats:sub>B<jats:sub>2</jats:sub>O<jats:sub>5</jats:sub>.
    Moreover, the non‐centrosymmetric structure of Ba(BO<jats:sub>2</jats:sub>OH)
    crystals was verified with power‐dependent confocal Second Harmonic Generation
    (SHG) microscopy indicating large conversion efficiencies in ambient atmosphere.</jats:p>
article_number: ' e2022001'
article_type: original
author:
- first_name: Yuxi
  full_name: Li, Yuxi
  last_name: Li
- first_name: Peter A.
  full_name: Hegarty, Peter A.
  last_name: Hegarty
- first_name: Michael
  full_name: Rüsing, Michael
  id: '22501'
  last_name: Rüsing
  orcid: 0000-0003-4682-4577
- first_name: Lukas M.
  full_name: Eng, Lukas M.
  last_name: Eng
- first_name: Michael
  full_name: Ruck, Michael
  last_name: Ruck
citation:
  ama: Li Y, Hegarty PA, Rüsing M, Eng LM, Ruck M. Ba(BO2OH) – A Monoprotonated Monoborate
    from Hydroflux Showing Intense Second Harmonic Generation. <i>Zeitschrift für
    anorganische und allgemeine Chemie</i>. 2022;648(21). doi:<a href="https://doi.org/10.1002/zaac.202200193">10.1002/zaac.202200193</a>
  apa: Li, Y., Hegarty, P. A., Rüsing, M., Eng, L. M., &#38; Ruck, M. (2022). Ba(BO2OH)
    – A Monoprotonated Monoborate from Hydroflux Showing Intense Second Harmonic Generation.
    <i>Zeitschrift Für Anorganische Und Allgemeine Chemie</i>, <i>648</i>(21), Article
    e2022001. <a href="https://doi.org/10.1002/zaac.202200193">https://doi.org/10.1002/zaac.202200193</a>
  bibtex: '@article{Li_Hegarty_Rüsing_Eng_Ruck_2022, title={Ba(BO2OH) – A Monoprotonated
    Monoborate from Hydroflux Showing Intense Second Harmonic Generation}, volume={648},
    DOI={<a href="https://doi.org/10.1002/zaac.202200193">10.1002/zaac.202200193</a>},
    number={21e2022001}, journal={Zeitschrift für anorganische und allgemeine Chemie},
    publisher={Wiley}, author={Li, Yuxi and Hegarty, Peter A. and Rüsing, Michael
    and Eng, Lukas M. and Ruck, Michael}, year={2022} }'
  chicago: Li, Yuxi, Peter A. Hegarty, Michael Rüsing, Lukas M. Eng, and Michael Ruck.
    “Ba(BO2OH) – A Monoprotonated Monoborate from Hydroflux Showing Intense Second
    Harmonic Generation.” <i>Zeitschrift Für Anorganische Und Allgemeine Chemie</i>
    648, no. 21 (2022). <a href="https://doi.org/10.1002/zaac.202200193">https://doi.org/10.1002/zaac.202200193</a>.
  ieee: 'Y. Li, P. A. Hegarty, M. Rüsing, L. M. Eng, and M. Ruck, “Ba(BO2OH) – A Monoprotonated
    Monoborate from Hydroflux Showing Intense Second Harmonic Generation,” <i>Zeitschrift
    für anorganische und allgemeine Chemie</i>, vol. 648, no. 21, Art. no. e2022001,
    2022, doi: <a href="https://doi.org/10.1002/zaac.202200193">10.1002/zaac.202200193</a>.'
  mla: Li, Yuxi, et al. “Ba(BO2OH) – A Monoprotonated Monoborate from Hydroflux Showing
    Intense Second Harmonic Generation.” <i>Zeitschrift Für Anorganische Und Allgemeine
    Chemie</i>, vol. 648, no. 21, e2022001, Wiley, 2022, doi:<a href="https://doi.org/10.1002/zaac.202200193">10.1002/zaac.202200193</a>.
  short: Y. Li, P.A. Hegarty, M. Rüsing, L.M. Eng, M. Ruck, Zeitschrift Für Anorganische
    Und Allgemeine Chemie 648 (2022).
date_created: 2023-10-11T08:56:26Z
date_updated: 2023-10-11T08:59:51Z
doi: 10.1002/zaac.202200193
extern: '1'
intvolume: '       648'
issue: '21'
keyword:
- Inorganic Chemistry
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://onlinelibrary.wiley.com/doi/epdf/10.1002/zaac.202200193
oa: '1'
publication: Zeitschrift für anorganische und allgemeine Chemie
publication_identifier:
  issn:
  - 0044-2313
  - 1521-3749
publication_status: published
publisher: Wiley
quality_controlled: '1'
status: public
title: Ba(BO2OH) – A Monoprotonated Monoborate from Hydroflux Showing Intense Second
  Harmonic Generation
type: journal_article
user_id: '22501'
volume: 648
year: '2022'
...