Bis-(2-diphenylphosphinoethyl)cyclopentadienylchlorolutetium: synthesis and dynamic behavior in solution |
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| Authors: | Roitershtein,D. M.,Krut" ko,D. P.,Veksler,E. N.,Lemenovskii,D. A.,Nie,W.,Qian,C. |
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| Affiliation: | (1) State Scientific Center of the Russian Federation !["ldquo"]("/content/k7l6kr80q7u081w4/xlarge8220.gif") L. Ya. Karpov Institute of Physical Chemistry!["rdquo"]("/content/k7l6kr80q7u081w4/xlarge8221.gif") , 10 Vorontsovo Pole, 103064 Moscow, Russian Federation;(2) Department of Chemistry, M. V. Lomonosov Moscow State University, Leninskie Gory, 119899 Moscow, Russian Federation;(3) Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Lu, Shanghai, 200032, People's Republic of China |
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| Abstract: | The new biscyclopentadienyl lutetium complex ( 5:1-C5H4CH2CH2PPh2)2LuCl was synthesized by the reaction of LuCl3(THF)3 with lithium (2-diphenylphosphinoethyl)cyclopentadienide. Its behavior in solution was investigated by dynamic NMR spectroscopy. It was shown that the coordination of both phosphino groups to the lutetium center is retained over the whole temperature range studied. The barrier to pseudo-rotation for the trigonal bipyramid, which governs the intramolecular dynamics of this complex, was determined. |
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| Keywords: | phosphinoethyl substituted cyclopenadienes cyclopentadienyl lutetium complexes dynamic NMR spectroscopy trigonal bipyramid pseudo-rotation |
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