2,3,5-Trimethylenehexanediyl (allene trimer) hexacarbonyldi-iron complexes with no iron–iron bond

Sei Otsuka; Akira Nakamura; Kazuhide Tani

doi:10.1039/J19710000154

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Journal of the Chemical Society A: Inorganic, Physical, Theoretical

Issue 0, 1971

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2,3,5-Trimethylenehexanediyl (allene trimer) hexacarbonyldi-iron complexes with no iron–iron bond

Sei Otsuka , Akira Nakamura and Kazuhide Tani

J. Chem. Soc. A, 1971, 154-159

DOI: 10.1039/J19710000154

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Abstract
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Reaction of allene with [Fe₃(CO)₁₂] at 85–90° gives a yellow, binuclear complex of formula [Fe₂(CO)₆(C₉H₁₂)](I); this can also be prepared from the allene dimer complex, [Fe₂(CO)₆(C₆H₈)]. At 120° the reaction affords a second isomer (II), which is orange-yellow and can be alternatively derived by thermal isomerisation of (I). A third isomer (III), which is lemon-yellow is obtained by thermal isomerisation of (I) or (II). The stepwise transformation (I)→(II)→(III) demonstrates the relative thermal stability. The molecular structures for the three diamagnetic complexes were deduced primarily on the basis of ¹H n.m.r. spectra and the structure of (II) was confirmed by X-ray analysis.

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Journal of the Chemical Society A: Inorganic, Physical, Theoretical

2,3,5-Trimethylenehexanediyl (allene trimer) hexacarbonyldi-iron complexes with no iron–iron bond

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