A neutron diffraction study of ytterbium(II) cyclic organohydroborates

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• 作者：Kristen Aznavour ; Muhammed Yousufuddin ; Robert Bau ; Garry J. McIntyre ; Sax A. Mason ; Xuenian Chen ; Soyoung Lim ; Christine E. Pleĉ ; nik ; Shengming Liu ; Bin Du ; Edward A. Meyers ; Sheldon G. Shore
• 关键词：Neutron diffraction ; Ytterbium ; Borohydride ; M-H-B bridge bond ; Metal hydride
• 刊名：Journal of Molecular Structure
• 出版年：2008
• 出版时间：12 November 2008
• 年：2008
• 卷：890
• 期：1-3
• 页码：277-280
• 全文大小：291 K

文摘

The complete structure of {K(MeTHF)₃}₂{Yb{(μ-H)₂BC₈H₁₄}₄} including the positions of the H atoms has been determined by single-crystal neutron diffraction on the quasi-Laue diffractometer VIVALDI at the Institut Laue-Langevin in Grenoble, France. Each [(μ-H)₂BC₈H₁₄]⁻ ligand is coordinated to the Yb atom via two Yb–H–B bridges, and two out of the four [(μ-H)₂BC₈H₁₄]⁻ units exhibit C–H···Yb agostic interactions. Crystallographic details: space group C2/c (Monoclinic); a = 17.62 (4), b = 19.92(4), c = 21.05 (4) Å; β = 95.62(9) Å; Z = 4. Final agreement factor: R(F) = 13.5 % for 1668 unique reflections with I > 2σ(I).