Bis(cyclopentadienyl) titanium aluminohydrides (in Russian)
A number of bis(cyclopentadienyl)titanium aluminohydrides with the formula (C/sub 5/H/sub 4/R)/sub 2/TiAlH/sub 4/, where R = H (I), CH/sub 3/ (II), Bu-t (III), and (CH/sub 2/)/sub n/(C/sub 5/H/sub 4/)/sub 2/TiAlH/sub 4/, in which n = 1 (IV), 2 (V), and 3 (VI), have been studied. The ESR spectra of ethereal solutions of complexes I-III and VI consist of octets with g = 1.991 (I), 1.987 (II), 1.989 (III), and 1.990 (VI). The spectrum of complex V is a broadened octet with g = 1.989. The constants a/sub H/ and a/sub Al/ in complexes I-III, V, and VI are close to 5 G. The spectrum of complex IV is a singlet with g = 1.991 and ..delta..H = 37.5 G. Complexes I-III, V, and VI are unstable. They slowly decompose in solutions (in Et/sub 2/O, THF, Et/sub 2/O + NEt/sub 3/) and rapidly decompose in attempts to isolate them in an individual state. The AlH/sub 4/ group in complex IV is bidentate. The complexes (Cp/sub 2/*TiAlH/sub 4/)/sub 2/ TMEDA (TMEDA is tetramethylethylenediamine) have been synthesized and isolated in the crystalline state for I, II, V, and VI. A structure has been proposed for these compounds on the basis of data from IR and ESR spectroscopy.
- Research Organization:
- M.V; Lomonosov Moscow State Univ., USSR
- OSTI ID:
- 6225941
- Journal Information:
- Sov. J. Coordinat. Chem.; (United States), Journal Name: Sov. J. Coordinat. Chem.; (United States) Vol. 11:3; ISSN SJCCD
- Country of Publication:
- United States
- Language:
- Russian
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Related Subjects
400201* -- Chemical & Physicochemical Properties
ALKENES
ALUMINIUM COMPOUNDS
ALUMINIUM HYDRIDES
BOND ANGLE
BOND LENGTHS
CATALYSIS
CATALYSTS
CATALYTIC EFFECTS
CHEMICAL REACTIONS
COMPLEXES
CYCLOALKENES
CYCLOPENTADIENE
DIENES
DIMENSIONS
ELECTRON SPIN RESONANCE
HOMOGENEOUS CATALYSIS
HYDRIDES
HYDROCARBONS
HYDROGEN COMPOUNDS
ISOMERIZATION
LENGTH
LIGANDS
MAGNETIC RESONANCE
ORGANIC COMPOUNDS
POLYENES
RESONANCE
SOLVATION
SPECTRA
STRUCTURAL CHEMICAL ANALYSIS
SYNTHESIS
TITANIUM COMPLEXES
TITANIUM COMPOUNDS
TITANIUM HYDRIDES
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENT COMPOUNDS