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5,5’-(Pyridine-3,5-diyl)diisophthalic acid

CAS Number 1433029-60-7

Chemistry Building Blocks, Materials, MOF Ligands, Porous Organic Frameworks


Product Code B3171-1g
Price £175 ex. VAT

Metal Organic Frameworks (MOFs) Biphenylpyridine Ligand

A rigid bridging ligand linker for MOFs in applications of iron detection and selective adsorption of carbon dioxide


Specifications | MSDS | Literature and Reviews


5,5′-(Pyridine-3,5-diyl)diisophthalic acid (H4PyDIP), CAS number 1433029-60-7, is a rigid bridging-type tetracarboxylic acid molecule containing two isophthalic acid moieties and one pyridine spacer.

Ln-metal–organic framework (Ln-MOF) materials [(CH3)2NH2]2[Ln2(L)2(H2O)2]·2DMF·2H2O (H4L = H4PyDIP) can not only selectively detect polychlorinated benzenes, but also highly sensitively detect the Fe3+ ion (KSV = 7.58 × 104 M–1).

Zn(II) metal–organic framework (MOF) [Me2NH2][Zn2(PyDIP)(HTZ)]·4DMF (HTZ = 1H-tetrazole) contains two shapes of 1D open channels with suitable pore sizes, high porosity, and a highly polar pore system decorated with uncoordinated N atoms and carboxylic O atoms, providing a good environment for selective adsorption of CO2.

General Information


CAS Number 1433029-60-7
Chemical Formula C21H13NO8
Full Name 5,5’-(Pyridine-3,5-diyl)diisophthalic acid
Molecular Weight 407.33 g/mol
Synonyms 3,5-bis(3,5-dicarboxylphenyl)pyridine, H4PyDIP, H4PDDA, H4BDPP
Classification / Family Biphenylpyridine, MOF ligands, 

Chemical Structure


1433029-60-7 - 5,5’-(pyridine-3,5-diyl)diisophthalic acid
5,5’-(Pyridine-3,5-diyl)diisophthalic acid (H4PyDIP) Chemical Structure, 1433029-60-7

Product Details


Purity >98%
Melting Point n.a.
Appearance Off white powder/crystal

MSDS Documentation


1433029-60-7 - 5,5’-(pyridine-3,5-diyl)diisophthalic acid5,5’-(Pyridine-3,5-diyl)diisophthalic acid MSDS Sheet

Literature and Reviews


  1. White-Light-Emitting Materials and Highly Sensitive Detection of Fe3+ and Polychlorinated Benzenes Based on Ln-Metal–Organic Frameworks, J. Huang et al., Cryst. Growth Des., 18 (9), 5353–5364 (2018); DOI: 10.1021/acs.cgd.8b00773.
  2. Isostructural Metal–Organic Frameworks Assembled from Functionalized Diisophthalate Ligands through a Ligand-Truncation Strategy, Y. Liu et al., Chem. Eur. J. 19 (18), 5637-5643 (2013); DOI: 10.1002/chem.201203297.
  3. Functionalization of MOFs via a mixed-ligand strategy: enhanced CO2 uptake by pore surface modification, B. Liu et al., Dalton Trans., 47, 5298-5303 (2018); DOI: 10.1039/C8DT00502H.
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