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May NV, Nys K, Ching HYV, Bereczki L, Holczbauer T, Di Marco VB, Bombicz P. Crystal structures of zinc(II) complexes with β-hydroxypyridinecarboxylate ligands: examples of structure-directing effects used in inorganic crystal engineering. ACTA CRYSTALLOGRAPHICA SECTION B, STRUCTURAL SCIENCE, CRYSTAL ENGINEERING AND MATERIALS 2021; 77:193-204. [PMID: 33843726 PMCID: PMC8040096 DOI: 10.1107/s2052520621000299] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Accepted: 01/09/2021] [Indexed: 06/12/2023]
Abstract
The coordination properties of four hydroxypyridinecarboxylates, designed for the treatment of iron-overloading conditions as bidentate O,O'-donor ligands, have been studied with ZnII in the solid state. The coordination compounds [Zn(A1)2(H2O)2] (1), [Zn(A2)2(H2O)] (2), [Zn(A3)2(H2O)]·2H2O (3) and [Zn2(B1)4(H2O)2]·4H2O (4), where the ligands are 1-methyl-4-oxidopyridinium-3-carboxylate (A1, C7H6NO3), 1,6-dimethyl-4-oxidopyridinium-3-carboxylate (A2, C8H8NO3), 1,5-dimethyl-4-oxido-pyridinium-3-carboxylate (A3, C8H8NO3) and 1-methyl-3-oxidopyridinium-4-carboxylate (B1, C7H6NO3), have been synthesized and analysed by single-crystal X-ray diffraction. The ligands were chosen to probe (i) the electronic effects of inverting the positions of the O-atom donor groups (i.e. A1 versus B1) and (ii) the electronic and steric effects of the addition of a second methyl group in different positions on the pyridine ring. Two axially coordinated water molecules resulting in a six-coordinated symmetrical octahedron complement the bis-ligand complex of A1. Ligands A2 and A3 form five-coordinated trigonal bipyramidal complexes with one additional water molecule in the coordination sphere, which is a rarely reported geometry for ZnII complexes. Ligand B1 shows a dimeric structure, where the two Zn2+ dications have slightly distorted octahedral geometry and the pyridinolate O atom of the neighbouring complex bridges them. The coordination spheres of the Zn2+ dications and the supramolecular structures are discussed in detail. The packing arrangements of 1-3 are similar, having alternating hydrophilic and hydrophobic layers, however the similarity is broken in 4. The obtained coordination geometries are compared with their previously determined CuII analogues. The study of the individual complexes is complemented with a comprehensive analysis of ZnII complexes with oxygen donor ligands with data from the Cambridge Structural Database.
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Affiliation(s)
- Nóra Veronika May
- Centre for Structural Sciences, Research Centre for Natural Sciences, Magyar tudósok körútja 2, Budapest, H-1117, Hungary
| | - Kevin Nys
- Department of Chemistry, University of Antwerp, Universiteitsplein 1, Antwerpen, B-2610, Belgium
| | - H. Y. Vincent Ching
- Department of Chemistry, University of Antwerp, Universiteitsplein 1, Antwerpen, B-2610, Belgium
| | - Laura Bereczki
- Centre for Structural Sciences, Research Centre for Natural Sciences, Magyar tudósok körútja 2, Budapest, H-1117, Hungary
- Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Magyar tudósok körútja 2, Budapest, H-1117, Hungary
| | - Tamás Holczbauer
- Centre for Structural Sciences, Research Centre for Natural Sciences, Magyar tudósok körútja 2, Budapest, H-1117, Hungary
- Institute of Organic Chemistry, Research Centre for Natural Sciences, Magyar tudósok körútja 2, Budapest, H-1117, Hungary
| | - Valerio B. Di Marco
- Department of Chemical Sciences, University of Padova, via Marzolo 1, Padova, 35131, Italy
| | - Petra Bombicz
- Centre for Structural Sciences, Research Centre for Natural Sciences, Magyar tudósok körútja 2, Budapest, H-1117, Hungary
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Mahesha, Hema MK, Karthik CS, Pampa KJ, Mallu P, Lokanath NK. Solvent induced mononuclear and dinuclear mixed ligand Cu( ii) complex: structural diversity, supramolecular packing polymorphism and molecular docking studies. NEW J CHEM 2020. [DOI: 10.1039/d0nj03567j] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Phenolate bridged dinuclear and solvent induced mononuclear supramolecular isomers of Cu(ii) complex have been reported to explore the structural diversity and their antibacterial activity supported by molecular docking studies.
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Affiliation(s)
- Mahesha
- Department of Studies in Physics
- University of Mysore
- Mysuru-570 006
- India
| | - M. K. Hema
- Department of Studies in Physics
- University of Mysore
- Mysuru-570 006
- India
| | - C. S. Karthik
- Department of Chemistry
- SJCE
- JSS Science and Technology University
- Mysuru-570 006
- India
| | - K. J. Pampa
- Department of Biotechnology
- University of Mysore
- Mysuru-570 006
- India
| | - P. Mallu
- Department of Chemistry
- SJCE
- JSS Science and Technology University
- Mysuru-570 006
- India
| | - N. K. Lokanath
- Department of Studies in Physics
- University of Mysore
- Mysuru-570 006
- India
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