Koichi Watanabe, Shoichi Sato
Feb 1, 1994
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0
Influential Citations
9
Citations
Journal
Bulletin of the Chemical Society of Japan
Abstract
The crystal structure as well as the chemical and physical properties of a new compound, barium tetrahydroxoborate (Ba[B(OH)4]2), are described. The compound is prepared by the chemical reaction of BaCl2 + 2NaBO2 + 4H2O = Ba[B(OH)4]2 + 2NaCl in an aqueous solution. The crystal is monoclinic, space group P21/n with cell constants a = 8.332(2), b = 16.522(3), c = 10.216(3) A, β = 106.63(2)°, V = 1347.51(6) A3, Z = 8, Dm = 2.90(1), Dc = 2.85(4) g cm-3. Melting point=ca. 1075 °C; Transition point (γ- to β-form) = ca. 532 °C. Refraction indexes: α = 1.567(6), β = 1.547(6), and γ = 1.517(8).