Abstract
The molecular structure of the title compound GeH3(C5H5) has been determined by X-ray and electron diffraction in the solid and gas phases respectively. Principal bond lengths (ra) in the gas-phase structure are: Ge–C(1) 1.969(5), C(1)–C(2) 1.478(13), C(2)–C(3) 1.350(5), and C(3)–C(4) 1.468(22)A. Crystals of compound (at 160 K) are monoclinic with a= 4.90, b= 9.54, c= 13.11 A, β= 98.4°[estimated standard deviations (e.s.d.s) 0.3% assumed], space group P21/c, and Z= 4. The structure has been determined and refined to R= 0.049 using 713 unique intensities obtained from microdensitometer measurements of the Weissenberg levels h0–6land hk0–7 taken with Cu-Kα radiation. The Ge–C(1) distance is 1.965(9)A; The C–C ring distances taken cyclically from C(1) are 1.49, 1.35, 1.44, 1.34, and 1.46 (e.s.d.s ≈ 0.013)A. In both phases the ring is essentially planar, with ring angles close to 109° at all carbon atoms except C(1), where the angle is 104.0(7)(solid phase) or 100(3)°(gas phase).
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