over Na/benzophenone/diglyme and distilled under nitrogen.
31P NMR and 1H spectra were recorded on Bruker AC250,
Bruker AMX300 and Bruker AV400 MHz spectrometers (external
standard 85% H3PO4) at ambient temperature. Literature methods
were used to prepare (Et2N)2P–P(SiMe3)Li45 and (iPr2N)2P–
P(SiMe3)Li.43
All reactions of (R2N)2P–P(SiMe3)Li with [Cp2MCl2] and
[CpZrCl3] were carried out in the same way. Therefore, only those
ones which resulted in crystalline products are described in more
detail.
thank Prof. Dietrich Gudat (Universita¨t Stuttgart, Germany) for
solid state 31P NMR studies on 7 and we thank Prof. Julia Jezierska
(University of Wrocław, Poland) for the measurement of magnetic
susceptibility of 7.
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(R2N)2P–P(SiMe3)Li·nTHF (R = Et, iPr) in 2 mL of solvent was
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1
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1
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1
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Acknowledgements
J.P. and R.G. thank the Polish Ministry of Science and Higher
Education (Grant Nr N N204 271535) for financial support. We
36 PLATON: A. L. Spek, J. Appl. Crystallogr., 2008, 36, 7.
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