Abstract
Abstract Gaseous cis -1-chloro-3-fluoropropene has been investigated at 20°C by electron diffraction. Only one conformer was observed, but small amounts ( v (φ) = V 0 (1 + (φ/φ 0 ) 4 −2(φ/φ 0 ) 2 ), φ = 180 — τ, with φ 0 = 37(10)° and V 0 = 1.0(1.0) kJ mol −1 . The results for bond lenghts ( r a ) and bond angles (∠ α ) are as follows: r (CC) = 1.347(14) A, r (CC) = 1.493(14) A, r (CCl) = 1.737(5) A, r (CF) = 1.388(9) A, ∠CCC = 125.4(8)°, ∠CCCl = 122.7(6)°, ∠CCF = 111.2(8)°. The quoted error limits are 2 σ, where σ includes uncertainties in the voltage and nozzle-to-plate distances and corrections for correlation in the experimental data.
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