A Highly Porous Metal–Organic Framework with Open Nickel Sites

A healthy appetite: A new metal–organic framework (DUT-9; see picture) has an unprecedented topology that contains {Ni5(μ3-O)2(CO2)6} clusters (green polyhedra; C gray, O red). DUT-9 has very high storage capacities for methane, hydrogen, and carbon dioxide because of the presence of open metal sites (marked by stars). 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.