An In Situ High‐Temperature Single‐Crystal Investigation of a Dehydrated Metal–Organic Framework Compound and Field‐Induced Magnetization of One‐Dimensional Metal–Oxygen Chains

The arrangement of the spins of adjacent helical cobalt–oxygen chains that form the backbone of the framework (see figure) of a microporous coordination polymer lead to metamagnetic behavior. When the polymer is heated, the metal center loses a coordinated water molecule and alters its coordination geometry from octahedral to square-pyramidal, although the framework remains stable. Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2002/2005/z501508_s.pdf or from the author. 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.