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

Journal Article · Sun Nov 01 00:00:00 EST 1987 · Sov. J. Coordinat. Chem.; (United States)

OSTI ID:5325152

Gur'yanova, E N; Isaeva, E S; Ginzburg, A G

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), Vol. 13:1; Other Information: Translated from Koord. Khim.; 13: No. 1, 23-32(Jan 1987)
• Country of Publication: United States
• Language: English

Related Subjects

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