Synthesis and characterisation of a series of 1,2-phenylenedioxoborylcyclopentadienyl-metal complexes [Ti(IV), Zr(IV), Hf(IV), La(III), Ce(III), Yb(III), Sn(II) and Fe(II)] |
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Authors: | M. Cristina Cassani |
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Affiliation: | Department of Chemistry, University of Sussex, Falmer, Brighton BN1 9QJ, UK |
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Abstract: | The preparation of a series of 1,2-phenylenedioxoborylcyclopentadienyl-metal complexes is described. These are of formula [M{η5-C5H4(BX)}Cl3] [M = Ti and X = CAT (2a), CATt (2b) or CATtt (2c); X = CATtt and M = Zr (4a) or Hf (4b)], [M{η5-C5H4(BX)}2Cl2] [M = Zr, X = CAT (3a) or CATt (3c); or M = Hf, X = CAT (3b) or CATt (3d)], [M{(μ-η5-C5H3BCAT)2 SiMe2}Cl2] [M = Zr (5a) or Hf (5b)], [M{η5-C5H3(BCAT)2}Cl3] [M = Zr (6a) or Hf (6b)], [M{η5-C5H4BCAT}3(THF)] [M = La (7a), Ce (7b) or Yb (7c)], [Sn{η5-C5 H4(BCATt)}Cl](8) and [Fe{η5-C5H4(BCATt)}2] (9). The abbreviations refer to BO2C6H4-1,2 (BCAT) and the 4-But (BCATt) and the (BCATtt) analogues. The compounds 2a-9 have been characterised by microanalysis, multinuclear NMR and mass spectra. The single crystal X-ray structure of the lanthanum compound 7a is presented. |
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Keywords: | 1,2-Phenylenedioxoborylcyclopentadienyl complexes Group 4 metals Lanthanum Tin Iron |
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