Substances discovered in the 2010s

thumb|Scanning tunneling microscope|STM image of the first (4×4) and second layers (×-β) of silicene grown on a thin silver film. Image size 16×16 nm.

chemical compound

thumb|upright=1.5|(a) Scanning tunneling microscope|STM image of germanene. (b) Profile (black line in (a)) showing step heights of ~3.2  Å. (c) High-resolution STM image (distorted by sample drift). (d) Profiles along the white continuous and dashed lines in (c) showing a ~9–10  Å separation between protrusions having heights of ~0.2  Å. (e) [[Electron diffraction pattern. (f) Model of germanene on Au(111).]] Germanene is a material made up of a single layer of germanium atoms. The material is created in a process similar to that of silicene and graphene, in which high vacuum and high tempera

Cyclooctadeca-1,3,5,7,9,11,13,15,17-nonayne or cyclo[18]carbon is an allotrope of carbon with molecular formula . The molecule is a ring of eighteen carbon atoms, connected by alternating triple and single bonds; thus, it is a polyyne and a cyclocarbon.

solid under high pressure

Cyanoform (tricyanomethane) is an organic compound with the chemical formula . It is a colorless liquid. It is a cyanocarbon and derivative of methane with three cyano groups. For many years, chemists have been unable to isolate this compound as a neat, free acid. However, in September 2015, reports surfaced of a successful isolation.

Triangulene (also known as Clar's hydrocarbon) is the smallest triplet-ground-state polybenzenoid. It exists as a biradical with the chemical formula . It was first hypothesized by Czech chemist Erich Clar in 1953. Its first confirmed synthesis was published in a February 2017 issue of Nature Nanotechnology, in a project led by researchers David Fox and Anish Mistry at the University of Warwick in collaboration with IBM. Other attempts by Japanese researchers have been successful only in making substituted triangulene derivatives.