Figure 1: The one-step topotactic transformation of CaGe2 into GeCH3 crystals.
From: Improving the stability and optical properties of germanane via one-step covalent methyl-termination
(a) Schematic illustration of conversion of CaGe2 (left) into GeCH3 (right). (b) Optical images of GeCH3 crystals with select crystals on graph paper with a 1 mm grid. Scale bar, 3 mm. (c) Single-crystal XRD pattern of GeCH3 collected down the [001] zone axis. (d) Powder XRD patterns of GeH (blue) and GeCH3 (red). The starred peaks correspond to diffraction reflections of an internal Ge standard. The dotted line highlights the changes in the 100 reflections between GeH and GeCH3. XRD, X-ray diffraction.
