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Slight ligand modifications within multitopic linear hydroxamates promotes connectivity differences in Cu(II) 1-D coordination polymers
Mohammed, Baba Fugu Coley, Joe Dickinson, Isabella F. Orton, James B. Klooster, Wim Gleeson, M. Paul
Mohammed, Baba Fugu
Coley, Joe
Dickinson, Isabella F.
Orton, James B.
Klooster, Wim
Gleeson, M. Paul
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2021-07-23
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Abstract
The novel multitopic ligands N-hydroxy-4-((2-hydroxy-3-methoxybenzyl)amino)benzamide (L3H3) and N-hydroxy-4-((2-
hydroxybenzyl)amino)benzamide (L4H3) have been synthesised through the Schiff base coupling and subsequent reduction
of 4-aminophenylhydroxamic acid and either o-vanillin (to give L3H3) or 2-hydroxybenzaldehyde (to give L4H3). These linear
multitopic ligands bind Cu(II) centres at both the hydroxamate and phenol ends to form the 1-D coordination polymers
[Cu(II)(L3H2)2]n (1) and {[Cu(II)(L4H2)2].2MeOH}n (2). Slight differences in the structures of L3H3 and L4H3 lead to significant
extended connectivity changes upon Cu(II) metalation that are exampled by a 27% decrease in intra-chain Cu(II)…Cu(II)
distance upon moving from 1 to 2. The significant conformation and metal binding differences shown by L3H2 and L4H2 in 1
and 2 respectively have been rationalised using density functional theory (DFT) calculations. Hirschfeld surface analysis has
been employed to assess and visualise the intra- and intermolecular interactions in both complexes.
Citation
Mohammed, B.F., Coley, J., Dickinson, I.F., Orton, J.B, Klooster, W., Gleeson, P. and Jones, L.F. (2021) Slight ligand modifications within multitopic linear hydroxamates promotes connectivity differences in Cu(II) 1-D coordination polymers. CrystEngComm, 23(32), pp. 5531-5539. https://doi.org/10.1039/D1CE00807B
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en
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© 2021 The Authors. Published by Royal Society of Chemistry. This is an open access article available under a Creative Commons licence.
The published version can be accessed at the following link on the publisher’s website: https://doi.org/10.1039/D1CE00807B
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1466-8033
EISSN
1466-8033