Abstract
Abstract The molecular structure of furan has been determined by several structural analyses using various combinations of data from gas-phase electron diffraction, rotational spectroscopy and liquid crystal NMR spectroscopy. The benefits of using as many data from as many experimental tecniques as possible are demonstrated. The best geometrical parameters (r0α) for furan assuming planarity and C2v symmetry are: rC(2)H = 108.64 (14), rC (3) H = 108.62 (16), rC = 136.40 (9), rCO = 136.41 (7), rCC = 143.03 (19) pm, ∠ OC (2) H = 117.35 (14), ∠ C (4) C (3) H = 127.93 (19), ∠ COC = 106.74 (7)°.
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