Issue 8, 2015

In situ generation of functionality in a reactive binicotinic-acid-based ligand for the design of multi-functional copper(ii) complexes: syntheses, structures and properties

Abstract

Under hydrothermal conditions, including tuning the reaction ratio and reaction temperature, three-dimensional (3D) porous {[Cu3(hbpdc)(OH)2(H2O)]·2H2O} (1), two-dimensional (2D) sheet {Cu2(hbpdc)(H2O)2}n (2), dinuclear [Cu(hbpdc)0.5(H2O)2] (3), dimer [Cu2(mbpdc)2(py)2]·9H2O (4), and mononuclear [Cu(hbpdcH2)(H2O)2] (5) have been synthesized via in situ ligand transformation reaction, in which 3,3′-dimethoxy-2,2-bipyridine-6,6′dicarboxylic acid (mbpdcH2) undergoes demethylation to 3,3′-dihydroxy-2,2′bipyridine-6,6′-dicarboxylic acid (hbpdcH4). The detailed coordination patterns of the hbpdcH4 ligand have been revealed by single-crystal X-ray diffraction. The catalytic results demonstrate that polymers 1 and 2 can function as heterogeneous and reusable catalysts for the Strecker reaction of various imines. In addition, magnetic susceptibility measurements of complexes 1, 2 and 4 reveal antiferromagnetic coupling between the copper(II) ions. Complex 1 follows the Curie–Weiss law, while 2 and 4 obey the Bleaney–Bowers dinuclear model.

Graphical abstract: In situ generation of functionality in a reactive binicotinic-acid-based ligand for the design of multi-functional copper(ii) complexes: syntheses, structures and properties

Supplementary files

Article information

Article type
Paper
Submitted
06 Nov 2014
Accepted
09 Jan 2015
First published
16 Jan 2015

CrystEngComm, 2015,17, 1871-1880

Author version available

In situ generation of functionality in a reactive binicotinic-acid-based ligand for the design of multi-functional copper(II) complexes: syntheses, structures and properties

D. Deng, H. Guo, G. Kang, L. Ma, X. He and B. Ji, CrystEngComm, 2015, 17, 1871 DOI: 10.1039/C4CE02204A

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