Activated molybdenum-molybdenum quadruple bonds. 2. First example of alkyne additions to metal-metal quadruple bonds
- Exxon Research and Development Laboratories, Baton Rouge, LA (USA)
- Univ. of Maryland, College Park (USA)
- Lawrence Berkeley Laboratory, CA (USA)
Addition of terminal aryl alkynes to ethylene diamine solutions of Mo{sub 2}(O{sub 2}CMe){sub 4} produces alkyne adducts of the empirical formula (Mo{sub 2}({mu}-4-RC{sub 6}H{sub 4}CCH)({mu}-O{sub 2}Me)(en){sub 4}{sup 3+})((O{sub 2}CMe{sup {minus}}){sub 3}).2en (R=H, Me, i-Pr). Results of {sup 1}H and {sup 13}C NMR studies indicated that three compounds are formed in two isomeric configurations in approximately 1:1 ratio. It is noted that in addition to steric and electronic factors that govern the alkyne chemistry at the alkoxide-supported triple bonded metal-metal hexavalent centers, solvation effects and hydrogen bonding play an important role in the structure and reactivities of these compounds. 19 refs., 1 fig.
- OSTI ID:
- 5873367
- Journal Information:
- Inorganic Chemistry; (USA), Journal Name: Inorganic Chemistry; (USA) Vol. 30:2; ISSN 0020-1669; ISSN INOCA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400201* -- Chemical & Physicochemical Properties
ALKENES
ALKYNES
AMINES
CHEMICAL PREPARATION
CHEMICAL REACTIONS
COMPLEXES
DATA
ETHYLENE
EXPERIMENTAL DATA
HYDROCARBONS
INFORMATION
ISOMERIZATION
MOLYBDENUM COMPLEXES
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
SYNTHESIS
TRANSITION ELEMENT COMPLEXES