Technetium-carbon multiple bonds. Synthesis and structure of Tc(=C=CHPh)Cl(dppe)[sub 2] and [Tc([triple bond]C-CH[sub 2]-t-Bu)Cl(dppe)[sub 2]][sup +]
- Los Alamos National Lab., NM (United States)
The 16-electron complex TcCl(dppe)[sub 2] reacts with terminal alkynes to form neutral vinylidene complexes of the type Tc(=C=CHR)Cl(dppe)[sub 2] (R = Ph, Me, t-Bu). Treatment of these vinylidene complexes with acid (HBF[sub 4] for R = Ph, HNMe[sub 3]BPh[sub 4] for R = t-Bu) yields the respective terminal carbyne complexes Tc([triple bond]CCH[sub 2]R)-Cl(dppe)[sub 2][sup +] (R = Ph, t-Bu). These vinylidene and carbyne compounds represent the first examples of technetium carbenes or carbynes. X-ray structures of Tc(=C=CHPh)Cl(ddpe)[sub 2] and Tc([triple bond]CCH[sub 2]-t-Bu)Cl(dppe)[sub 2[minus]+] were determined, and the Tc-C bond lengths obtained were 1.861(9) and 1.724(7) A, respectively. 13 refs., 2 figs.
- OSTI ID:
- 7267434
- Journal Information:
- Organometallics; (United States), Vol. 13:4; ISSN 0276-7333
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
TECHNETIUM COMPLEXES
CRYSTAL STRUCTURE
MOLECULAR STRUCTURE
SYNTHESIS
ALKYNES
CARBENES
CARBYNES
CHEMICAL BONDS
VINYLIDENE RADICALS
X-RAY DIFFRACTION
CARBON
COHERENT SCATTERING
COMPLEXES
DIFFRACTION
ELEMENTS
HYDROCARBONS
NONMETALS
ORGANIC COMPOUNDS
RADICALS
SCATTERING
TRANSITION ELEMENT COMPLEXES
400201* - Chemical & Physicochemical Properties
400102 - Chemical & Spectral Procedures