Borazine

Title: Borazine
CAS Registry Number: 6569-51-3
Additional Names: Inorganic benzene; hexahydro-s-triazaborine; borazane; borazole; triborine triamine; triboron nitride; s-triazaborane
Molecular Formula: B3H6N3
Molecular Weight: 80.50
Percent Composition: B 40.29%, H 7.51%, N 52.20%
Literature References: Isoelectronic with benzene. Prepn: Stock, Pohland, Ber. 59, 2215 (1926); Wiberg, Bolz, Ber. 73, 209 (1940). Structural study: H. Watanabe, W. Kubo, J. Am. Chem. Soc. 82, 2428 (1960); W. Harshbarger et al., Inorg. Chem. 8, 1683 (1969). Electronic structure: A. Lötz et al., Chem. Phys. 103, 317 (1986). Raman spectroscopy: J. V. Kainnady, A. Weber, J. Raman Spectrosc. 5, 35 (1976). Electric and magnetic properties: G. R. Dennis, G. L. D. Ritchie, J. Phys. Chem. 97, 8403 (1993). Use in synthesis of ceramic composites: K. Su et al., Chem. Mater. 5, 547 (1993). Review: E. M. Smolin, L. Rapoport, s-Triazines and Derivatives (Interscience, New York, 1959) pp 597-626.
Properties: Mobile liquid; mp -58°; bp 53°. Stable up to 500° when pure and totally anhydrous. d40 0.824; d457 0.898. nD20 1.3821. Critical temp 252°. Heat of vaporization 7.0 kcal. Mol vol at bp = 99.7 ml. Surface tension at mp = 31.09 dynes/cm. Parachor 207.9. Trouton's constant 21.4. Eötvös' constant 2.0. Dipole moment in benzene (25°) = 0.50. Dissolves in water, giving a soln with strong reducing properties. Hydrolyzes slowly in aq soln yielding hydrogen, boric acid, and ammonia.
Melting point: mp -58°
Boiling point: bp 53°
Index of refraction: nD20 1.3821
Density: d40 0.824; d457 0.898
Bordeaux Mixture Boric Acid Boric Anhydride Borneol Bornyl Acetate

Borazine
Borazine-dimensions-2D.png
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Identifiers
CAS number 6569-51-3 YesY
PubChem 138768
ChemSpider 122374 YesY
ChEBI CHEBI:33119 YesY
Jmol-3D images Image 1
Properties
Molecular formula B3H6N3
Molar mass 80.50 g/mol
Appearance colourless liquid
Density 0.81 g/cm3
Melting point −58 °C
Boiling point 161 °C; 55 °C at 105 Pa
Hazards
NFPA 704
NFPA 704.svg
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Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
Infobox references

Borazine is an inorganic compound with the chemical formula (BH)3(NH)3. In this cyclic compound, the three BH units and three NH units alternate. The compound is isoelectronic and isostructural with benzene. Like benzene, borazine is a colourless liquid.[1] For this reason borazine is sometimes referred to as "inorganic benzene".