Exceptional Negative Thermal Expansion in Isoreticular Metal-Organic Frameworks Dubbeldam, David ; Walton, Krista S. ; Ellis, Donald E. ; Snurr, Randall Q. Abstract Publication: Angewandte Chemie Pub Date: June 2007 DOI: 10.1002/ange.200700218 Bibcode: 2007AngCh.119.4580D