Confinement of Cd(II) by 2,2′-bipyridyl: control of structural transformations and porosity in perfluorinated biphenyldicarboxylate MOFs

Confinement of Cd(II) by 2,2′-bipyridyl: control of structural transformations and porosity in perfluorinated biphenyldicarboxylate MOFs Full article

Journal

Dalton Transactions
ISSN: 1477-9234 , E-ISSN: 1477-9226

Output data

Year: 2026, Volume: 55, Number: 7, Pages: 2937-2947 Pages count : 11 DOI: 10.1039/d5dt02607e

Authors

Burlak Pavel V. ¹ , Cheplakova Anastasia M. ¹ , Samsonenko Denis G. ¹ , Vinogradov Andrey S. ² , Kovalenko Konstantin A. ¹ , Fedin Vladimir P. ¹

Affiliations

1	Nikolaev Institute of Inorganic Chemistry SB RAS, 3 Akad. Lavrentiev Av., 630090 Novosibirsk, Russian Federation
2	N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry SB RAS, 9 Akad. Lavrentiev Av., 630090 Novosibirsk, Russian Federation

Funding (1)

Russian Science Foundation

19-73-20087

Cadmium(II) can form complexes with coordination numbers 6 and 7, which makes them labile, especially with relatively weak ligands like perfluorinated carboxylates. Confining the coordination environment with chelating ligands such as 2,2′-bipyridyl (2,2′-bpy) is a promising approach to obtain complexes with more predictable geometry and stability. Using this strategy, MOFs with anions of octafluorobiphenyldicarboxylic acid (H2oFbpdc) were successfully synthesized in different alcohols. Compound [Cd(2,2′-bpy)(oFbpdc)]·CH3OH (1·MeOH) exhibits a 3D framework, whereas the other phases [Cd(2,2′-bpy)(oFbpdc)]·G (2·G, G = EtOH, iPrOH, tBuOH) adopt a layered structure. Thermal activation of all phases results in guest removal, yielding the non-porous phase [Cd(2,2′-bpy)(oFbpdc)] (2). Despite its non-porous nature, 2 undergoes a structural transformation upon CO2 adsorption into an open form with a specific surface area of 237 m2 g−1. This transformed phase shows good adsorption selectivity for binary C2H2/CH4 and CO2/CH4 mixtures.

Burlak P.V. , Cheplakova A.M. , Samsonenko D.G. , Vinogradov A.S. , Kovalenko K.A. , Fedin V.P.
Confinement of Cd(II) by 2,2′-bipyridyl: control of structural transformations and porosity in perfluorinated biphenyldicarboxylate MOFs
Dalton Transactions. 2026. V.55. N7. P.2937-2947. DOI: 10.1039/d5dt02607e WOS

Submitted:	Oct 30, 2025
Accepted:	Dec 18, 2025
Published online:	Jan 16, 2026
Published print:	Feb 17, 2026

Web of science:

WOS:001670497400001

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