Figure 1.

Solid-state structures of 1-Cl and 1-H, as determined by single-crystal X-ray diffraction (blue: Si; purple: Ge; yellow-green: Cl; dark gray: C; light gray: H; Ph–H atoms are omitted for clarity). Displacement ellipsoids are shown at the 50% probability level. Selected bond lengths [Å]: 1-Cl: Ge–Ge = 2.4384(4), Ge–Si = 2.3855(6); 1-H: Ge–Ge = 2.420(2), Ge–Si = 2.377(4).