【摘 要】
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T The hydroxy yttrium hexaborate,Y[B2O3(OH)]3,has been synthesized under mild hydrothermal conditions at 458 K.The crystal structure was solved and refined from
【机 构】
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Department of Materials Science and Engineering
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T The hydroxy yttrium hexaborate,Y[B2O3(OH)]3,has been synthesized under mild hydrothermal conditions at 458 K.The crystal structure was solved and refined from single-crystal X-ray diffraction.It adopts a trigonal space group R3c(No.161)with α=8.3942(4),c=20.6484(12)(A),V=1260.03(12)(A)3,YB6H3O12,Mr=348.79,Z=6,Dc=2.758 g/cm3,F(000)=1008,μ=7.015 mm-1,R=0.0321 and wR=0.0772.Its crystal structure is made up of sixmembered rings,alternating three-connected[BO3(OH)]tetrahedra and planar[BO3]trigonal groups,which are interconnected with each other by sharing their common oxygen corners to form a three-dimensional framework structure with six-membered ring channels that are occupied by the yttrium atoms and run along the c axis.FT-IR,Raman,and TG-DTA results are also presented.
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