Synthesis and structure of the new binuclear complex eta/sup 5/-C/sub 5/H/sub 5/(CO)/sub 2/Fe-eta/sup 1/-C/sub 5/H/sub 4/(CO)/sub 2/Fe-CH/sub 3/ (in Russian)
The authors have found that the dimeric complex (eta/sup 5/-C/sub 5/H/sub 5/(CO)/sub 2/Fe)/sub 2/ is also metallated in the cyclopentadiene ring under these conditions, although the yield of the product from the decomposition of the lithium derivative with heavy water (the monodeuterated derivative) does not exceed 20%. During an attempt to use the metallation of (eta/sup 5/-C/sub 5/H/sub 5/(CO)/sub 2/Fe)/sub 2/ to produce the methyl-substituted complex eta/sup 5/CH/sub 3/C/sub 5/H/sub 4/-eta/sup 5/-C/sub 5/H/sub 5/(CO)/sub 4/Fe/sub 2/ the binuclear complex eta/sup 5/-C/sub 5/H/sub 5/(CO)/sub 2/Fe-eta/sup 1/-C/sub 5/H/sub 4/(CO)/sub 2/Fe-CH/sub 3/ (I) was obtained instead of the expected product. It can be supposed that the butyllithium used as metallating agent is capable of reducing the dimer with the formation of the (eta/sup 5/-C/sub 5/H/sub 5/(CO)/sub 2/Fe)/sup -/ anion. With the addition of the electrophilic agent methyl iodide this anion gives the sigma-methyl derivative eta/sup 5/-C/sub 4/H/sub 6/(CO)/sub 2/FeCH/sub 3/, which is metallated in the cyclopentadiene ring by an excess of butyllithium. The obtained lithium derivative eta/sup 4/-LiC/sub 5/H/sub 4/(CO)/sub 2/Fe-CH/sub 3/ reacts with eta/sup 5/-C/sub 5/H/sub 5/(CO)/sub 2/FeI, which was also found among the reaction products, giving the binuclear complex (I). In order to check this suggestion the authors realized the metallation of the authentic eta/sup 5/-C/sub 5/H/sub 5/(CO)/sub 2/Fe-CH/sub 3/ with butyllithium in THF at -78/sup 0/C; with the subsequent addition of eta/sup 5/-C/sub 5/H/sub 5/(CO)/sub 2/FeI to the reaction mixture they in fact obtained compound (I).
- Research Organization:
- A.N. Nesmeyanov Institute of Heteroorganic Compounds, Moscow, USSR
- OSTI ID:
- 6416836
- Journal Information:
- Bull. Acad. Sci. USSR, Div. Chem. Sci. (Engl. Transl.); (United States), Vol. 35:2; Other Information: Translated from Izvestiya Akademii Nauk SSSR Seriya Khimicheskaya, 35: No. 4, 437-440(Feb 1986)
- Country of Publication:
- United States
- Language:
- Russian
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
36 MATERIALS SCIENCE
IRON COMPLEXES
STRUCTURAL CHEMICAL ANALYSIS
SYNTHESIS
LITHIUM COMPLEXES
CATALYTIC EFFECTS
BOND ANGLE
BOND LENGTHS
CARBONYLS
COMPLEXOMETRY
CYCLOPENTADIENE
DEUTERIUM COMPOUNDS
DIMERS
ELECTRON SPIN RESONANCE
ELECTRONIC STRUCTURE
INFRARED SPECTRA
LIGANDS
MASS SPECTRA
MONOCLINIC LATTICES
TETRAHYDROFURAN
X-RAY DIFFRACTION
ALKENES
COHERENT SCATTERING
COMPLEXES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CYCLOALKENES
DIENES
DIFFRACTION
DIMENSIONS
FURANS
HETEROCYCLIC COMPOUNDS
HYDROCARBONS
HYDROGEN COMPOUNDS
LENGTH
MAGNETIC RESONANCE
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
POLYENES
RESONANCE
SCATTERING
SPECTRA
TRANSITION ELEMENT COMPLEXES
400201* - Chemical & Physicochemical Properties
360602 - Other Materials- Structure & Phase Studies