Synthesis and structural studies of some new rhenium phosphine heptahydride complexes. Evidence for classical structures in solution
- Yale Univ., New Haven, CT (USA)
A series of new rhenium phosphine heptahydride complexes ReH{sub 7}L{sub 2} (L{sub 2} = a chelating bidentate phosphine) have been synthesized and characterized by IR and {sup 1}H, and {sup 31}P, and {sup 13}C NMR spectroscopy. The hydride resonances of ReH{sub 7}(dppf) (1, dppf = 1,1{prime}-bis(diphenylphosphino)ferrocene), ReH{sub 7}(dppb) (2, dppb = 1,4-bis(diphenylphosphino)butane), and ReH{sub 7}((+)-diop) (3, (+)-diop = (4S,5S)-4,5-bis((diphenylphosphino)methyl)-2,2-dimethyl-1,3-dioxolane) undergo decoalescence upon cooling. The low-temperature hydride patterns suggest classical 9-coordinate tricapped trigonal prismatic structures. Consistent with the classical structures, {sup 1}H NMR spectra of deuterated ReH{sub 7}L{sub 2} complexes show very small and temperature-independent upfield isotope shifts in the hydride region and no change in {sup 2}J{sub HP}.
- OSTI ID:
- 6623973
- Journal Information:
- Journal of the American Chemical Society; (USA), Journal Name: Journal of the American Chemical Society; (USA) Vol. 112:12; ISSN 0002-7863; ISSN JACSA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
DATA
DATA ANALYSIS
EXPERIMENTAL DATA
HYDRIDES
HYDROGEN COMPOUNDS
INFORMATION
MEASURING INSTRUMENTS
MEASURING METHODS
NUMERICAL DATA
PHOSPHINES
PHOSPHORUS COMPOUNDS
REFRACTORY METAL COMPOUNDS
RHENIUM COMPOUNDS
RHENIUM HYDRIDES
STRUCTURAL CHEMICAL ANALYSIS
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS