Issue 10, 2016

Synthesis and stabilization of a hypothetical porous framework based on a classic flexible metal carboxylate cluster

Abstract

By using pyridyl derivatives 4-cyanopyridine (4-pyCN) or nicotinate (na) as terminal ligands (LT) to decorate the flexible trigonal-prismatic trinuclear metal carboxylate M33-O/μ3-OH)(RCOO)6(LT)3 clusters, a theoretically predicted uninodal 6-connected flu-e network for [M33-O/μ3-OH)(bdc)3(LT)3] (H2bdc = 1,4-benzenedicarboxylic acid) has been realized in three new porous coordination frameworks. The flu-e topology is isomeric to the uninodal 6-connected acs (MIL-88) and tetranodal 6-connected mtn-e (MIL-101) ones observed in the classic metal carboxylate framework materials, but comprises of unique cubic cages which require exceptional conformation for the trinuclear clusters. The weak coordinating 4-pyCN terminal ligands tend to leave the clusters during thermal activation, leading to framework distortion and reduction of the long-range order of the flu-e network, which can only be restored by 4-pyCN instead of other guest molecules. On the other hand, the carboxylate ends of the adjacent na ligands coordinate with additional metal ions to crosslink the coordination networks as new binodal 4,9-connected networks with remarkably enhanced thermal/chemical stability and porosity.

Graphical abstract: Synthesis and stabilization of a hypothetical porous framework based on a classic flexible metal carboxylate cluster

Supplementary files

Article information

Article type
Paper
Submitted
07 Way 2015
Accepted
04 Xim 2015
First published
04 Xim 2015

Dalton Trans., 2016,45, 4269-4273

Synthesis and stabilization of a hypothetical porous framework based on a classic flexible metal carboxylate cluster

Y. Wei, J. Shen, P. Liao, W. Xue, J. Zhang and X. Chen, Dalton Trans., 2016, 45, 4269 DOI: 10.1039/C5DT03478G

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements