Figure 2: The schematic drawings of crystal structure of Sr2Co3S2O3.

(a) The unit cell. (b) The mer-CoS3O3 octahedral coordination in the Co2 site. (c) The trans-CoS4O2 octahedral coordination in the Co1 site. The interatomic distances are in Å. (d) The Co-O hybrid spin ladder composed of rectangular two-leg ladders (SL) and necklace ladders (NL) alternatively along ac-plane.