Structural, magnetic, and gas adsorption study of a series of partially fluorinated metal-organic frameworks (H F -MOFs)

Pradip Pachfule, Raja Das, Pankaj Poddar, Rahul Banerjee

Research output: Contribution to journalArticlepeer-review

90 Citations (Scopus)

Abstract

Four new partially fluorinated metal organic frameworks (HF-MOFs) have been synthesized under different solvothermal conditions (H2O or dimethylformamide (DMF)) from transition metal cations [Co2+ and Mn2+], 3-methyl pyridine (3-mepy) and 4,4′- (hexafluoroisopropylidene) bis(benzoic acid) (C17H10F 6O4, H2hfbba), to determine the influence of reaction conditions on the formation of MOFs. This family of materials displays a striking degree of structural similarity depending on the solvent of synthesis. HF-MOFs synthesized from H2O [Co-HFMOF-W, Co(hfbba)(3-mepy)(H2O) and Mn-HFMOF-W, Mn(hfbba)(3-mepy)(H 2O)] contain three-dimensional connectivity whereas HF-MOFs synthesized from DMF Co-HFMOF-D, [Co2(hfbba)2(3-mepy) 2].(DMF)3 and Mn-HFMOF-D, [Mn2(hfbba) 2(3-mepy)]·(H2O) are two-dimensional in nature. Co-HFMOF-W and Mn-HFMOF-W are iso-structural polymeric materials. Thermal gravimetric analysis performed on as-synthesized HF-MOFs revealed that these compounds have high thermal stability (∼350 °C). The continuous decrease of the χT product with decreasing T for Co-HFMOF-D and Co-HFMOF-W respectively indicates the presence of antiferromagnetic exchange interaction between two Co2+ (S = 3/2) metal centers within a cluster.

Original languageEnglish
Pages (from-to)3855-3865
Number of pages11
JournalInorganic Chemistry
Volume50
Issue number9
DOIs
Publication statusPublished - 02 May 2011
Externally publishedYes

Fingerprint

Dive into the research topics of 'Structural, magnetic, and gas adsorption study of a series of partially fluorinated metal-organic frameworks (H F -MOFs)'. Together they form a unique fingerprint.

Cite this