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

Abstract

A heterometallic metal-organic framework incorporating Zn(2+) and Ti(4+) 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.

Highly efficient photocatalysts by pyrolyzing a Zn–Ti heterometallic metal–organic framework

“…This is identical to the reported one and has been attributed to the presence of cations in channels. 30 The Brunauer-Emmett-Teller (BET) surface area of ZTOF-1 calculated based on the N 2 isotherms is 731 m 2 g -1 , which is somewhat lower than the reported value of 1045 m 2 g -1 . 30 Pore size distribution data of ZTOF-1 reveal three major pore sizes of 5.9, 6.8, and 8.6 Å, reflecting the microporous structure identical to the crystal structure (Fig.…”

A Flexible Photoactive Titanium Metal–Organic Framework Based on a [TiIV3(μ3‐O)(O)2(COO)6] Cluster

“…[15,22] To partly overcome this issue, mixed-metal MOFs containing titanium have been synthesized, either by introducing Ti IV through postsynthetic metal exchange or by combining aTiprecursor and adivalent metal salt during synthesis. [23][24][25][26][27][28][29][30] Very recently,Zhou and co-workers used ah exanuclear Ti cluster as metal source to form the porphyrinic Ti MOF PCN-22. [31] Interestingly,this preformed cluster rearranged during synthesis to form the final heptameric node found in the framework.…”

A Flexible Photoactive Titanium Metal–Organic Framework Based on a [TiIV3(μ3‐O)(O)2(COO)6] Cluster

“…[19][20][21] Theprime hurdle in the synthesis of Ti MOFs is the high reactivity of the commonly used Ti precursors,w hich are susceptible to fast olation and oxolation and thus readily form ill-defined oxyhydroxides. [23][24][25][26][27][28][29][30] Very recently,Zhou and co-workers used ah exanuclear Ti cluster as metal source to form the porphyrinic Ti MOF PCN-22. [23][24][25][26][27][28][29][30] Very recently,Zhou and co-workers used ah exanuclear Ti cluster as metal source to form the porphyrinic Ti MOF PCN-22.…”