Metal-metal-bonded complexes of the early transition metals. 4. Synthesis and characterization of the tantalum (II) dimer Ta/sub 2/Cl/sub 6/(PMe/sub 3/)/sub 4/
Journal Article
·
· Inorg. Chem.; (United States)
The dimeric tantalum(III) phosphine complex Ta/sub 2/Cl/sub 6/(PMe/sub 3/)/sub 4/ (1) has been prepared from the reaction of tantalum pentachloride, trimethylphosphine, and sodium amalgam in toluene. The compound crystallizes in the noncentrosymmetric orthorhombic space group P2/sub 1/2/sub 1/2/sub 1/ with a = 11,681 (3) angstroms, b = 11.834 (3) angstroms, C = 20.257 (7) angstroms, V = 2800.18 angstroms/sup 3/, and rho(calcd) = 2.085 g cm/sup -3/ for mol wt 878.9 and Z = 4. The structure refined to R/sub F/ = 0.037 and R/sub wF/ = 0.035. 1 is a distorted edge-sharing bioctahedral complex with axial phosphines on one tantalum and equatorial phosphines on the second. Direct P-P coupling is observed across the dimer with J/sub PP'/ = 2.46 Hz. The metal-metal bond length in 1 is 2.721 (1) angstroms, and the formal metal-metal bond order in this d/sup 2/-d/sup 2/ dimer is 2.
- Research Organization:
- Univ. of Michigan, Ann Arbor
- DOE Contract Number:
- FG02-80ER10125
- OSTI ID:
- 6576909
- Journal Information:
- Inorg. Chem.; (United States), Journal Name: Inorg. Chem.; (United States) Vol. 21:6; ISSN INOCA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Metal-metal bonded complexes of the early transition metals. 5. Direct hydrogenation of a metal-metal multiple bond
Synthesis and X-ray crystal structure of the new palladium(I) dimer [Pd{sub 2}(PMe{sub 3}){sub 6}][hfac]{sub 2} and its conversion to [PdMe(PMe{sub 3}){sub 3}][hfac] via activation of phosphorous-carbon bonds
Synthesis and reactivity of dinuclear platinum complexes. NMR spectra of [Pt{sub 2}(PMe{sub 3}){sub 6}][hfac]{sub 2} and an unusual {beta}-diketonate bridging mode in [Pt{sub 2}({mu}-hfac)(PMe{sub 3}){sub 4}][hfac]
Journal Article
·
Tue Nov 30 23:00:00 EST 1982
· Inorg. Chem.; (United States)
·
OSTI ID:6800364
Synthesis and X-ray crystal structure of the new palladium(I) dimer [Pd{sub 2}(PMe{sub 3}){sub 6}][hfac]{sub 2} and its conversion to [PdMe(PMe{sub 3}){sub 3}][hfac] via activation of phosphorous-carbon bonds
Journal Article
·
Wed May 11 00:00:00 EDT 1994
· Inorganic Chemistry
·
OSTI ID:450859
Synthesis and reactivity of dinuclear platinum complexes. NMR spectra of [Pt{sub 2}(PMe{sub 3}){sub 6}][hfac]{sub 2} and an unusual {beta}-diketonate bridging mode in [Pt{sub 2}({mu}-hfac)(PMe{sub 3}){sub 4}][hfac]
Journal Article
·
Wed Jun 04 00:00:00 EDT 1997
· Inorganic Chemistry
·
OSTI ID:563606
Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
BOND ANGLE
BOND LENGTHS
CHEMICAL PREPARATION
CHLORIDES
CHLORINE COMPOUNDS
COMPLEXES
COORDINATES
DATA
DIMENSIONS
DIMERS
ENERGY LEVELS
EXPERIMENTAL DATA
HALIDES
HALOGEN COMPOUNDS
INFORMATION
LENGTH
MOLECULAR STRUCTURE
NUMERICAL DATA
PHOSPHINES
PHOSPHORUS COMPOUNDS
SPECTRA
STRUCTURAL CHEMICAL ANALYSIS
SYNTHESIS
TANTALUM COMPLEXES
TRANSITION ELEMENT COMPLEXES
400201* -- Chemical & Physicochemical Properties
BOND ANGLE
BOND LENGTHS
CHEMICAL PREPARATION
CHLORIDES
CHLORINE COMPOUNDS
COMPLEXES
COORDINATES
DATA
DIMENSIONS
DIMERS
ENERGY LEVELS
EXPERIMENTAL DATA
HALIDES
HALOGEN COMPOUNDS
INFORMATION
LENGTH
MOLECULAR STRUCTURE
NUMERICAL DATA
PHOSPHINES
PHOSPHORUS COMPOUNDS
SPECTRA
STRUCTURAL CHEMICAL ANALYSIS
SYNTHESIS
TANTALUM COMPLEXES
TRANSITION ELEMENT COMPLEXES