Complex phase behaviour and structural transformations of metal-organic frameworks with mixed rigid and flexible bridging ligands

DOI: 10.1002/chem.201805028

Authors: Hayder D. J. Arkawazi (University of Leeds) , Rob Clowes (University of Liverpool) , Andrew I. Cooper (University of Liverpool) , Takumi Konno (Osaka University) , Naoto Kuwamura (Osaka University) , Christopher M. Pask (University of Leeds) , Michaele Hardie (University of Leeds)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Chemistry - A European Journal , VOL 38

State: Published (Approved)
Published: December 2018
Diamond Proposal Number(s): 15059

Abstract: Two new heteroleptic metal‐organic framework materials show strong adsorption of H2 and ethanol. [Co2(L1)(bdc)2], where L1=N1,N4‐bis(4‐pyridinylmethyl)‐2,5‐dimethylbenzene‐1,4‐diamine and bdc is benzene‐1,4‐dicarboxylate, has a twofold interpenetrating pillared layer structure with pcu topology. It has a stepped, hysteretic EtOH adsorption that can be related to complicated phase and structural transformation behaviour that occurs on de‐solvation and re‐solvation, including major conformational changes to the geometry of the flexible L1 ligand. [Co2(L1)(bpdc)2], where bpdc=biphenyl‐4,4′‐dicarboxylate, has a unique six‐connected self‐catenating framework structure. Solvation changes occur without significant structural change and a partially‐hydrolysed material binds its own decomposition products as guests.

Journal Keywords: flexible structure; hydrogen storage; metal-organic framework; self-catenating; single-crystal-to-single-crystal

Diamond Keywords: Hydrogen Storage

Subject Areas: Chemistry, Materials


Instruments: I19-Small Molecule Single Crystal Diffraction

Other Facilities: SPring-8

Added On: 16/01/2019 11:15

Discipline Tags:

Chemistry Materials Science Metal-Organic Frameworks Metallurgy Organometallic Chemistry

Technical Tags:

Diffraction Single Crystal X-ray Diffraction (SXRD)