High-Pressure Synthesis and Crystal Structure of the New Orthorhombic Polymorph β-HgB4O7
2005 ◽
Vol 60
(8)
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pp. 815-820
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Keyword(s):
The new orthorhombic polymorph β-HgB4O7 has been synthesized under high-pressure and hightemperature conditions in a Walker-type multianvil apparatus at 7.5 GPa and 600 °C. β-HgB4O7 is isotypic to the known ambient pressure phases MB4O7 (M = Sr, Pb, Eu) and the high-pressure phase β-CaB4O7 crystallizing with two formula units in the space group Pmn21 with lattice parameters a = 1065.6(2), b = 438.10(9), and c = 418.72(8) pm. The relation of the crystal structure of the high-pressure phase β-HgB4O7 to the normal pressure phase α-HgB4O7 as well as the relation to the isotypic phases MB4O7 (M = Sr, Pb, Eu) and β-CaB4O7 are discussed.
2018 ◽
Vol 74
(2)
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pp. 120-124
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1993 ◽
Vol 48
(2)
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pp. 237-239
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1990 ◽
Vol 45
(2)
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pp. 107-110
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1999 ◽
Vol 143
(2)
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pp. 266-272
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1997 ◽
Vol 128
(2)
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pp. 251-255
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Keyword(s):
2013 ◽
Vol 228
(9)
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2009 ◽
Vol 182
(3)
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pp. 484-490
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