Hysteretic Three‐Step Spin Crossover in a Thermo‐ and Photochromic 3D Pillared Hofmann‐type Metal–Organic Framework

Multistability is exhibited by a metal–organic framework material that undergoes unique three-step spin crossover with 20 K thermal hysteresis (see picture). The stepwise transition is coupled to a three-step structural transformation that defines four distinct structural states. The material also exhibits reversible photo-induced spin crossover. Detailed facts of importance to specialist readers are published as ”Supporting Information”. Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.