Fig. 1
From: Fulde–Ferrell–Larkin–Ovchinnikov and vortex phases in a layered organic superconductor

Schematic of the crystal structure of β″-(BEDT-TTF)2SF5CH2CF2SO3.22 This salt is composed of the BEDT-TTF conducting and SF5CH2CF2SO3 insulating layers. Because of the large SF5CH2CF2SO3 anion, the energy band formed by the BEDT-TTF molecular orbitals is highly 2D