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- W4249044682 abstract "Synthesis by two routes of (7-η1-C7H7)Re(CO)5 (2), the first monohapto-cycloheptatrienyl derivative of a transition metal, is described. The first involves ultraviolet irradiation of the acyl C7H7(CO)Re(CO)5 (1) in acetone at 78°C. The second and preferred route involves reaction of NaRe(CO)5 with [C7H7]-[BF4] in THF to form orange crystalline 2 in 90% yield. Activations enthalpy for thermal decomposition of 2 to form ditropyl and Re2(CO)10 is 30.4 ± 0.3 cal mole-1, a value close to the estimated strenght of the C7H7Re(CO)5 bond. A single crystal X-ray diffraction study of 2 shows a nearly octahedral Re(CO)5 group bonded in the quasi-axial position to the methylene carbon atom of the seven-membered ring, which has a boat conformation. NMR spectra are consistent with a similar structure as the exclusive or dominant form in solution." @default.
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- W4249044682 date "1982-07-01" @default.
- W4249044682 modified "2023-09-23" @default.
- W4249044682 title "Synthesis and X-ray structure of pentacarbonyl(7-η1 cyclohepta-1,3,5-trienyl) rhenium(i)" @default.
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- W4249044682 doi "https://doi.org/10.1016/s0022-328x(00)89214-1" @default.
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