Research Library

Premium Windmill Co 4 {Co 4 (μ 4 ‐O)} with 16 Divergent Branches Forming a Family of Metal–Organic Frameworks: Organic Metrics Control Topology, Gas Sorption, and Magnetism
Author(s)
Chen Qing,
Xue Wei,
Lin JianBin,
Wei YongSheng,
Yin Zheng,
Zeng MingHua,
Kurmoo Mohamedally,
Chen XiaoMing
Publication year2016
Publication title
chemistry – a european journal
Resource typeJournals
PublisherWiley
Abstract A series of highly connected metal–organic frameworks (MOFs), [Co 8 (O)(OH) 4 (H 2 O) 4 (ina) 8 ](NO 3 ) 2 ⋅ 2 C 2 H 5 OH ⋅ 4 H 2 O ( 1 ), [Co 8 (O)(OH) 4 (H 2 O) 4 (pba) 8 ](NO 3 ) 2 ⋅ 8 C 2 H 5 OH ⋅ 28 H 2 O ( 2 ), and [Co 8 (O)(OH) 4 (H 2 O) 4 (pbba) 8 ](NO 3 ) 2 ⋅ guest ( 3 ), in which ina=isonicotinate, pba=4‐pyridylbenzoate, and pbba=4‐(pyridine‐4‐yl)phenylbenzoate, is reported. These MOFs contain a new secondary building unit (SBU), with a square Co 4 (μ 4 ‐O) central unit having the rare μ 4 ‐O 2− motif, which is decorated by the other four peripheral cobalt atoms through μ 3 ‐OH in a windmill‐like shape. This SBU holds 16 divergent connecting organic ligands, pyridyl‐carboxylates, to form three different frameworks. The high porosity of desolvated 2 is shown by the efficient gas absorption of N 2 , CO 2 , CH 4 , and H 2 . In addition, 1 and 2 exhibit unusual canted antiferromagnetic behavior with spin‐glass‐like relaxation, with blocking temperatures that are fairly high, 20 K ( 1 ) and 10 K ( 2 ), for cobalt materials. The relationship between the metal clusters and linkers has been studied, in which the size and rotational degrees of freedom of the ligands are found to control the topology, gas sorption, and magnetic properties.
Subject(s)adsorption , antiferromagnetism , chemistry , cobalt , combinatorics , condensed matter physics , crystallography , inorganic chemistry , magnetism , materials science , mathematics , metal , metal organic framework , organic chemistry , physics , pyridine , sbus , sorption , topology (electrical circuits)
Language(s)English
SCImago Journal Rank1.687
H-Index242
eISSN1521-3765
pISSN0947-6539
DOI10.1002/chem.201601826

Seeing content that should not be on Zendy? Contact us.

This content is not available in your region!

Continue researching here.

Having issues? You can contact us here