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Electron-donor properties of eta/sup 5/-cyclopentadienylcarbonyl and eta/sup 6/-arenecarbonyl compounds of transition metals in reactions with v acceptors

Journal Article · · Sov. J. Coordinat. Chem.; (United States)
OSTI ID:5325152
; ;
The complexation reactions of compounds of the types eta/sup 5/-CpM(CO)/sub n/(PR/sub 3/)/sub 3-n/ (M = Mn, Re; R = i-C/sub 3/H/sub 7/, C/sub 6/H/sub 5/, 4-CH/sub 3/C/sub 6/H/sub 4/; n = 1 to 3) and eta/sup 6/-MesM(CO)/sub 3/ (Mes = 1,3,5-(CH/sub 3/)/sub 3/C/sub 6/H/sub 3/, M = Cr, Mo, W) with aluminum bromide, gallium trichloride, and mercuric trifluoroacetate in various solvents (benzene, methylene chloride, dichloroethane) have been investigated by IR spectroscopy, calorimetry, and measurements of the dielectric constant. The coordination sites have been established. It has been shown that the compounds investigated coordinate the acceptor molecules by means of their metal atoms. One exception is CpMn (CO)/sub 3/, which gives a complex with AlBr/sub 3/ with the participation of an oxygen atom of a carbonyl group. The heats of formation and the dipole moments of the complexes have been determined. The dipole moments of the intermolecular M-Al and M-Ga bonds have been evaluated. On the basis of a comparison of the energy of the coordinate bonds and the degree of charge transfer, it has been conducted that the intermolecular metal-metal bonds in the complexes investigated have a donor-acceptor nature.
Research Organization:
L. Ya. Karpov Scientific-Research Institute of Physical Chemistry (USSR)
OSTI ID:
5325152
Journal Information:
Sov. J. Coordinat. Chem.; (United States), Journal Name: Sov. J. Coordinat. Chem.; (United States) Vol. 13:1; ISSN SJCCD
Country of Publication:
United States
Language:
English

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Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ACETATES
ALKENES
ALUMINIUM BROMIDES
ALUMINIUM COMPOUNDS
AROMATICS
BINDING ENERGY
BROMIDES
BROMINE COMPOUNDS
CALORIMETRY
CARBONYLS
CARBOXYLIC ACID SALTS
CHLORIDES
CHLORINE COMPOUNDS
CHROMIUM COMPLEXES
COMPLEXES
COMPLEXOMETRY
COORDINATION VALENCES
CYCLOALKENES
CYCLOPENTADIENE
DIELECTRIC PROPERTIES
DIENES
DIPOLE MOMENTS
ELECTRICAL PROPERTIES
ELECTRON TRANSFER
ELECTRONS
ELEMENTARY PARTICLES
ENERGY
ENTHALPY
FERMIONS
FORMATION HEAT
GALLIUM CHLORIDES
GALLIUM COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
HYDROCARBONS
INFRARED SPECTRA
LEPTONS
MANGANESE COMPLEXES
MERCURY COMPLEXES
MOLYBDENUM COMPLEXES
ORGANIC COMPOUNDS
PHYSICAL PROPERTIES
POLYENES
REACTION HEAT
RHENIUM COMPLEXES
SPECTRA
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPLEXES
TUNGSTEN COMPLEXES
VALENCE