Unique Coordination-Based Heterometallic Approach for the Stoichiometric Inclusion of High-Valent Metal Ions in a Porous Metal-Organic Framework

A heterometallic metal-organic framework incorporating Zn2+ and Ti4+ is successfully synthesized. The unique coordination mode of each metal ion to 2-oxido-1,4-benzenedicarboxylate leads to Zn6Ti2 building blocks, which extend to form a double-walled primitive cubic net. This material possesses a permanent porosity and long-term stability.This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (Grants 2011-0027419 and 2012R1A1A2004333). We thank the Pohang Accelerator Laboratory for beamline use (Grant 2012-3rd-2D-009)