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Yttrium complexes containing heteroscorpionate ligands [(3,5-But 2C3HN2)2CHC(Ph)2O]– and [o-Me2NC6H4CH2C(NCy)2]–

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Abstract

A reaction of benzophenone with bis(3,5-di-tert-butylpyrazolyl)methyllithium (3,5-But 2C3HN2)2CHLi (obtained in situ by metallation of (3,5-But 2C3HN2)2CH2 with n-butyllithium in THF at–70 °C) led to the synthesis of alkoxide lithium complex [(3,5-But 2-C3HN2)2CHCPh2O]Li(THF) (1) containing a new monoanionic heteroscorpionate ligand [(3,5-But 2C3HN2)2CHCPh2O]–. Hydrolysis of complex 1 gave 2,2-bis(3,5-di-tert-butylpyrazolyl)-1,1-diphenylethanol (2) in 90% yield. The structure of alcohol 2 was established by X-ray crystallography. A reaction of anhydrous YCl3 with two molar equivalents of lithium alkoxide 1 in THF furnished yttrium monochloride complex [(3,5-But 2C3HN2)2CHCPh2(μ-O)]2-YCl(THF)[(μ-Cl)Li]2 (3). According to X-ray diffraction data, chloride 3 is a monomeric ate-complex with one terminal and two bridging chloride ligands. The nitrogen atoms of the pyrazole rings are not involved in the coordination of the ligand with the yttrium ion. The bisalkyl complex [(3,5-But 2C3HN2)2CHCPh2O]Y(CH2SiMe3)2(THF)2 (4) obtained by the reaction of alcohol 2 with an equimolar amount of Y(CH2SiMe3)3(THF)2 turned out to be unstable and completely decomposed in solution in C6D6 at 25 °C within two hours. An exchange reaction of equimolar amounts of YCl3 and {[o-Me2NC6H4CH2C(NCy)2]Li(THF)2}2 (5) (Cy is the cyclohexyl) in THF led to the formation of a neutral monochloride complex [o-Me2NC6H4CH2C(NCy)2]2YCl(THF)2 (6). A reaction of complex 6 with an equimolar amount of o-Me2NC6H4CH2Li in toluene led to the synthesis of a new yttrium aminobenzyl complex [o-Me2NC6H4CH2C(NCy)2]2Y[CH2C6H4-o-NMe2] (7). X-ray diffraction studies showed that in complexes 6 and 7 the donor NMe2 groups of amidinate ligands are not involved in the metal—ligand interaction. Yttrium complexes 4 and 7 exhibited catalytic activity in polymerization of isoprene.

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References

  1. R. D. Shannon, Acta Cryst., 1976, A32, 751.

    Article  CAS  Google Scholar 

  2. H. Yasuda, J. Organometal. Chem., 2002, 647, 128.

    Article  CAS  Google Scholar 

  3. H. Schumann, J. A. Meese-Marktscheffel, L. Esser, Chem. Rev., 1995, 95, 865.

    Article  CAS  Google Scholar 

  4. S. Trofimenko, J. Am. Chem. Soc., 1966, 88, 1842.

    Article  CAS  Google Scholar 

  5. S. Trofimenko, J. Am. Chem. Soc., 1967, 89, 3165.

    Article  CAS  Google Scholar 

  6. S. Trofimenko, Scorpionates: The Coordination Chemistry of Poly(pyrazolyl)borate Ligands, Imperial College Press, London, 1999.

    Book  Google Scholar 

  7. S. Trofimenko, J. Am. Chem. Soc., 1970, 92, 5118.

    Article  CAS  Google Scholar 

  8. N. Marques, A. Sella, J. Takats, Chem. Rev., 2002, 102, 2137.

    Article  CAS  Google Scholar 

  9. C. Pettinari, R. Pettinari, Coord. Chem. Rev., 2005, 249, 663.

    Article  CAS  Google Scholar 

  10. H. R. Bigmore, S. C. Lawrence, P. Mountford, C. S. Tredget, Dalton Trans., 2005, 635.

    Google Scholar 

  11. A. Otero, J. Fernandez-Baeza, A. Lara-Sanchez, J. Tejeda, L. F. Sanchez-Barba, Eur. J. Inorg. Chem., 2008, 5309.

    Google Scholar 

  12. A. D. Schofield, M. L. Barros, M. G. Cushion, A. D. Schwarz, P. Mountford, Dalton Trans., 2009, 85.

    Google Scholar 

  13. S. Milione, C. Capacchione, C. Cuomo, M. Strianese, V. Bertolasi, A. Grasi, Inorg. Chem., 2009, 48, 9510.

    Article  CAS  Google Scholar 

  14. A. Otero, J. Fernandez-Baeza, A. Antinolo, J. Tejeda, A. Lara-Sanchez, L. Sanchez-Barba, E. Martinez-Cabaollero, A. M. Rodriguez, I. Lopez-Solera, Inorg. Chem., 2005, 44, 5336.

    Article  CAS  Google Scholar 

  15. Z. Zhang, D. Cui, A. A. Trifonov, Eur. J. Inorg. Chem., 2010, 2861.

    Google Scholar 

  16. S. Bambirra, F. Perazzolo, S. J. Boot, T. J. J. Sciarone, A. Meetsma, B. Hessen, Organometallics, 2008, 27, 704.

    Article  CAS  Google Scholar 

  17. M. Sircoglou, J. Yang, R. Guillot, S. Bezzenine-Lafollee, V. Gandon, Eur. J. Inorg. Chem., 2013, 2807.

    Google Scholar 

  18. K. B. Aubrecht, K. Chang, M. A. Hillmyer, W. B. Tolman, J. Polym. Sci., Part A: Polym. Chem., 2001, 39, 284.

    Article  CAS  Google Scholar 

  19. G. G. Skvortsov, A. O. Tolpyguin, G. K. Fukin, A. V. Cherkasov, A. A. Trifonov, Eur. J. Inorg. Chem., 2010, 1655.

    Google Scholar 

  20. A. A. Kissel, D. M. Lyubov, T. V. Mahrova, G. K. Fukin, A. V. Cherkasov, T. A. Glukhova, D. Cui, A. A. Trifonov, Dalton Trans., 2013, 9211.

    Google Scholar 

  21. G. G. Skvortsov, A. V. Cherkasov, G. K. Fukin, A. A. Trifonov, Russ. Chem. Bull. (Int. Ed.), 2015, 64, 2872 [Izv. Akad. Nauk, Ser. Khim., 2015, 2872].

    Article  CAS  Google Scholar 

  22. A. A. Trifonov, D. M. Lyubov, E. A. Fedorova, G. K. Fukin, H. Schumann, S. Mühle, M. Hummert, M. N. Bochkarev, Eur. J. Inorg. Chem., 2006, 747.

    Google Scholar 

  23. Z. Lu, G. P. A. Yapp, D. S. Richeson, Organometallics, 2001, 20, 706.

    Article  CAS  Google Scholar 

  24. R. Duchateau, C. T. van Wee, A. Meetsma, P. van Duijnen, J. H. Teuben, Organometallics, 1996, 15, 2279.

    Article  CAS  Google Scholar 

  25. S. Harder, Organometallics, 2005, 24, 373.

    Article  CAS  Google Scholar 

  26. R. E. Ludt, G. P. Crowther, C. R. Hauser, J. Org. Chem., 1970, 35, 1288.

    Article  CAS  Google Scholar 

  27. M. D. Taylor, C. P. Carter, J. Inorg. Nucl. Chem., 1962, 24, 387.

    Article  CAS  Google Scholar 

  28. M. F. Lappert, R. J. Pearce, J. Chem. Soc., Chem. Commun., 1973, 126.

    Google Scholar 

  29. SMART, APEX2. Bruker AXS Inc., Madison, Wisconsin, USA, 2012.

  30. G. M. Sheldrick, Acta Cryst., 2015, C71, 3.

    Google Scholar 

  31. SADABS. Bruker AXS Inc., Madison, Wisconsin, USA, 2001.

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Authors and Affiliations

  1. G. A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences, 49 ul. Tropinina, 603950, Nizhny Novgorod, Russian Federation

    G. G. Skvortsov, A. V. Cherkasov, G. K. Fukin & A. A. Trifonov

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  1. G. G. Skvortsov
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  2. A. V. Cherkasov
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  3. G. K. Fukin
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  4. A. A. Trifonov
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Correspondence to A. A. Trifonov.

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Dedicated to Academician of the Russian Academy of Sciences O. G. Sinyashin on the occasion of his 60th birthday.

Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 5, pp. 1189–1197, May, 2016.

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Skvortsov, G.G., Cherkasov, A.V., Fukin, G.K. et al. Yttrium complexes containing heteroscorpionate ligands [(3,5-But 2C3HN2)2CHC(Ph)2O]– and [o-Me2NC6H4CH2C(NCy)2]– . Russ Chem Bull 65, 1189–1197 (2016). https://doi.org/10.1007/s11172-016-1435-7

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