Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Kinetic generation of cis-C[sub 5]H[sub 5](CO)[sub 2]ReH[sub 2] from the reaction of C[sub 5]H[sub 5](CO)[sub 2]Re([mu]-H)Pt(H)(PPh[sub 3])[sub 2] with diphenylacetylene

Journal Article · · Inorganic Chemistry; (United States)
DOI:https://doi.org/10.1021/ic00052a024· OSTI ID:6724601
Protonation of K[C[sub 5]H[sub 5](CO)[sub 2]ReH] with CF[sub 3]CO[sub 2]H at [minus]78[degrees]C produced a 65:35 mixture of cis-C[sub 5]H[sub 5](CO)[sub 2]ReH[sub 2] (cis-1) and trans-C[sub 5]H[sub 5](CO)[sub 2]ReH[sub 2] (trans-1). At 24[degrees]C, this mixture equilibrated to a 2:98 cis-1:trans-1 mixture. Reaction of C[sub 5]H[sub 5](CO)[sub 2]Re([mu]-H)Pt(H)(PPh[sub 3])[sub 2] (3-Ph) with diphenylacetylene at [minus]9[degrees]C initially produced an 84:16 cis-1:trans-1 mixture. Photolysis of trans-1 in a methylcyclohexane glass at 10 K gave a 40:60 cis-1:trans-1 photostationary state. cis-C[sub 5]H[sub 5](CO)[sub 2]ReHD (cis-1-HD) has an unusual intermediate magnitude of J[sub HD] = 6.5 Hz, which suggested the possibility that cis-1 might be in equilibrium with C[sub 5]H[sub 5](CO)[sub 2]Re([eta][sup 2]-HD) (cis-1-[eta][sup 2]-HD). Howevr, it was not possible to detect measurable amounts of C[sub 5]H[sub 5](CO)[sub 2]Re([eta][sup 2]-H[sub 2]) (cis-1-[eta][sup 2]-H[sub 2]) by IR spectroscopy. 30 refs., 1 fig., 2 tabs.
OSTI ID:
6724601
Journal Information:
Inorganic Chemistry; (United States), Journal Name: Inorganic Chemistry; (United States) Vol. 31:26; ISSN 0020-1669; ISSN INOCAJ
Country of Publication:
United States
Language:
English