Synthesis and crystal structure of dinuclear [(thf)₃YCl₂{μ-P(H)C₆H₂-2,4,6-Me₃}]₂ with seven-coordinate yttrium atoms

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• 作者：Sven Krieck ; Helmar Gö ; rls ; Matthias Westerhausen
• 关键词：Yttrium ; Metathesis reactions ; Phosphanides ; Salt elimination ; Ligand exchange
• 刊名：Inorganic Chemistry Communications
• 出版年：2009
• 出版时间：May 2009
• 年：2009
• 卷：12
• 期：5
• 页码：409-411
• 全文大小：265 K

文摘

The metathesis reaction of KP(H)Mes with YCl₃ in tetrahydrofuran yields dinuclear [(thf)₃YCl₂{μ-P(H)Mes}]₂ (1) with a yield of 26 % (Mes = mesityl, C₆H₂-2,4,6-Me₃). The seven-coordinate yttrium atoms exhibit pentagonal bipyramidal coordination spheres with bridging mesitylphosphanide substituents. The Y₂PC fragments are nearly planar with an average Y–P bond length of 296.0 pm. The P-bound hydrogen atoms are perpendicular to these planes. The small ¹J(P,H) coupling constant of 125 Hz is in agreement with the picture that the H atom binds mainly to the p-orbital of the phosphorus atom.