Coupling reactions of the tetranuclear rectangular clusters Mo/sub 4/Cl/sub 8/(PR/sub 3/)/sub 4/. Phosphine ligand abstraction and formation of the condensation products (Mo/sub 4/Cl/sub 8/(PR/sub 3/)/sub 2/)/sub x/
Reaction of the tetrameric clusters Mo/sub 4/Cl/sub 8/(PR/sub 3/)/sub 4/ (PR/sub 3/ = PEt/sub 3/, P(n-Pr)/sub 3/, P(n-Bu)/sub 3/, and PMe/sub 2/Ph) with Mo(CO)/sub 4/Cl/sub 2/, or more conveniently with Mo(CO)/sub 6/, in refluxing chlorobenzene leads to phosphine abstraction and formation of the condensation products (Mo/sub 4/Cl/sub 8/(PR/sub 3/)/sub 2/)/sub x/. Evidence obtained from reactivity and spectroscopic data indicates that these condensation products all have the same basic structure and retain the rectangular cluster units derived from Mo/sub 4/Cl/sub 8/(PR/sub 3/)/sub 4/ as essential components. Extended Mo-Mo bonding between the coupled tetrameric units is concluded to be unlikely. Because the compounds are crystalline and exhibit significant solubility in noncoordinating solvents, their formulation as dimers of tetramers, (Mo/sub 4/Cl/sub 8/(PR/sub 3/)/sub 2/)/sub 2/, is preferred over the alternative formulation as polymers, (Mo/sub 4/Cl/sub 8/(PR/sub 3/)/sub 2/)/sub infinity/. 23 references, 3 figures, 2 tables.
- Research Organization:
- Iowa State Univ., Ames
- DOE Contract Number:
- W-7405-ENG-82
- OSTI ID:
- 5491696
- Journal Information:
- Inorg. Chem.; (United States), Journal Name: Inorg. Chem.; (United States) Vol. 24:4; ISSN INOCA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400201* -- Chemical & Physicochemical Properties
400301 -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
ALKANES
AROMATICS
BENZENE
CHEMICAL BONDS
CHEMICAL PREPARATION
CHEMICAL REACTIONS
CHLORINE COMPOUNDS
CONDENSATES
CRYSTALS
DATA
DEHYDROCYCLIZATION
DIMERS
EXPERIMENTAL DATA
HALOGEN COMPOUNDS
HYDROCARBONS
INFORMATION
INFRARED SPECTRA
LIGANDS
MOLYBDENUM COMPOUNDS
NUMERICAL DATA
ORGANIC COMPOUNDS
PHOSPHINES
PHOSPHORUS COMPOUNDS
REFRACTORY METAL COMPOUNDS
SPECTRA
SPECTROPHOTOMETRY
SPECTROSCOPY
STRUCTURAL CHEMICAL ANALYSIS
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
ULTRAVIOLET SPECTRA
VISIBLE SPECTRA
X-RAY SPECTRA
X-RAY SPECTROSCOPY