کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1330892 978981 2010 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Gd4B4O11F2: Synthesis and crystal structure of a rare-earth fluoride borate exhibiting a new “fundamental building block” in borate chemistry
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی معدنی
پیش نمایش صفحه اول مقاله
Gd4B4O11F2: Synthesis and crystal structure of a rare-earth fluoride borate exhibiting a new “fundamental building block” in borate chemistry
چکیده انگلیسی

A new gadolinium fluoride borate Gd4B4O11F2 was yielded in a Walker-type multianvil apparatus at 7.5 GPa and 1100 °C. Gd4B4O11F2 crystallizes monoclinically in the space group C2/c with the lattice parameters a=1361.3(3) pm, b=464.2(2) pm, c=1374.1(3) pm, and β=91.32(3)° (Z=4). The crystal structure exhibits a structural motif not yet reported from borate chemistry: two BO4-tetrahedra (□) and two BO3-groups (▵) are connected via common corners, leading to the fundamental building block 2▵2□:▵□□▵. In the two crystallographically identical BO4-tetrahedra, a distortion resulting in a very long B–O-bond is found.

A new gadolinium fluoride borate Gd4B4O11F2 could be synthesized via high-pressure/high-temperature synthesis (multianvil technique). The crystal structure exhibits a structural motif not yet reported from borate chemistry: two BO4-tetrahedra (□) and two BO3-groups (▵) are connected via common corners, leading to the fundamental building block 2▵2□:▵□□▵.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Solid State Chemistry - Volume 183, Issue 2, February 2010, Pages 471–478
نویسندگان
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