Lithium triborate
| Crystal structure | ||||||||||
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| __ Li + __ B 3+ __ O 2− | ||||||||||
| Crystal system |
orthorhombic |
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| Space group |
Pna 2 1 (No. 33) |
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| Lattice parameters |
a = 8.444 Å , b = 7.378 Å, c = 5.146 Å |
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| General | ||||||||||
| Surname | Lithium triborate | |||||||||
| other names |
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| Ratio formula | LiB 3 O 5 | |||||||||
| External identifiers / databases | ||||||||||
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| properties | ||||||||||
| Molar mass | 119.37 g mol −1 | |||||||||
| Physical state |
firmly |
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| density |
2.47 g cm −3 |
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| Melting point |
834 ° C |
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| Refractive index |
n x = 1.578, n y = 1.607, n z = 1.621 (532 nm) |
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| safety instructions | ||||||||||
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| As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . Refractive index: Na-D line , 20 ° C | ||||||||||
Lithium triborate (LBO) is a colorless and transparent, crystalline solid . It is an inorganic compound with the molecular formula LiB 3 O 5 , specifically a lithium - salt of boric acid and thus belongs to the substance group of borates . It is used in non-linear optics for frequency doubling of lasers, such as Nd: YAG or Sa: Ti employed.
properties
Lithium triborate crystallizes in the orthorhombic crystal system in the space group Pna 2 1 (space group no. 33) or the crystal class mm2 with the lattice parameters a = 8.444 Å , b = 7.378 Å and c = 5.146 Å. The crystal structure consists of a network of trigonal-planar BO 3 and tetrahedral BO 4 groups. The Li + ions are located in the channels of this network . The material is transparent in the wavelength range from 160 to 2600 nanometers (nm) and is therefore also suitable for applications in the ultraviolet range of the electromagnetic spectrum .
Individual evidence
- ↑ a b c data sheet (red optronics) .
- ↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
- ↑ Yu.F. Shepelev, RS Bubnova, SK Filatov, NA SenNova, NA Pilneva: LiB 3 O 5 crystal structure at 20, 227 and 377 ° C . In: Journal of Solid State Chemistry . tape 178 , no. 25 . Elsevier , October 2005, p. 2987–2997 , doi : 10.1016 / j.jssc.2005.06.017 .