The reaction of iron carboxylates with titanium alkoxides. Isolation and structural characterisation of [Ti6(μ3-O)6(O2CPh)6(OCH2C(CH3)3)6]
摘要:
The reaction of [Fe-4(mu(3)-O)(2)(O2CPh)(8)(py)(2)] (1) with Ti(OPrn)(4) in toluene yields separate Fe and Ti species each containing both carboxylate and alkoxide groups rather than a bimetallic Fe-Ti complex. The addition of neopentanol to the reaction mixture has enabled [Ti-6(mu(3)-O)(6)(O2CPh)(6)(OCH2C(CH3)(3))(6)] (3) to be isolated and structurally identified. The compound [Ti-6(mu(3)-O)(4)(O2CPh)(8)(OPrn)(8)] (4) has also been characterised and shown not to convert to a {Ti-6(mu(3)-O)(6)}(12+) core compound under the same temperature conditions used in the Fe-Ti reactions. (C) 2003 Elsevier B.V. All rights reserved.