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Investigating the Conformations of a Family of [M 2L 3] 4+ Helicates Using Single Crystal X-ray Diffraction. Molecules 2023; 28:molecules28031404. [PMID: 36771074 PMCID: PMC9921459 DOI: 10.3390/molecules28031404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 01/25/2023] [Accepted: 01/27/2023] [Indexed: 02/05/2023] Open
Abstract
We present five new dinuclear triple helicate compounds of types [Mn2L3](ClO4)4, [Co2L3](BF4)4, [Ni2L3](BF4)4, [Cu2L3](BF4)4, and [Zn2L3](BF4)4, where L is a previously reported semi-rigid ligand incorporating two α-diimine primary donor groups and two secondary 4-pyridyl donor groups. All complexes have been characterized in both solution and the solid state. Single crystal X-ray diffraction studies were used to probe the variation in the respective helical structures as the coordinated metal ion was altered, including the effect on the orientations of the secondary binding domains. The influence of the metal ion size, the spin state in the case of Fe(II), and the presence of Jahn-Teller distortions on the overall helical structure has been investigated. These results form a basis for the design and construction of new large metallosupramolecular architectures which manifest properties associated with the constituent helical metalloligand units.
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Gil-Hernández B, Millan S, Gruber I, Quirós M, Marrero-López D, Janiak C, Sanchiz J. Improvement of the Proton Conduction of Copper(II)-Mesoxalate Metal-Organic Frameworks by Strategic Selection of the Counterions. Inorg Chem 2022; 61:11651-11666. [PMID: 35838657 PMCID: PMC9377511 DOI: 10.1021/acs.inorgchem.2c01241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
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Three copper(II)/mesoxalate-based MOFs with formulas
(H3O)[Cu9(Hmesox)6(H2O)6Cl]·8H2O (1), (NH2Me2)0.4(H3O)0.6[Cu9(Hmesox)6(H2O)6Cl]·8H2O (2), and (enH2)0.25(enH)1.5[Cu6(Hmesox)3(mesox)(H2O)6Cl0.5]Cl0.5·5.25H2O (3) were synthesized (H4mesox = mesoxalic
acid = 2,2-dihydroxypropanedioic acid, en = ethylenediamine). Essentially,
all of the compounds display the same anionic network with a different
arrangement of the cations, which have a remarkable effect on the
proton conduction of the materials, ranging from 1.16 × 10–4 S cm–1 for 1 to 1.87
× 10–3 S cm–1 for 3 (at 80 °C and 95% RH). These compounds also display antiferromagnetic
coupling among the copper(II) ions through both the carboxylate and
alkoxido bridges. The values of the principal magnetic coupling constants
were calculated by density functional theory (DFT), leading to congruent
values that confirm the predominant antiferromagnetic nature of the
interactions. Three copper(II)-mesoxalate
metal−organic frameworks
were synthesized in the presence of three different cations: hydronium,
dimethylammonium, and ethylenediammonium, which neutralize the charge
of the anionic networks. Besides the crystallographic characterization
and the investigation of the magnetic properties, the compounds show
varying proton conductivities depending on the included cations. The
proton conductivity increases 1 order of magnitude in the case of
compound 3 (1.87 × 10−3 S cm−1 at 80 °C and 95% RH), which contains ethylenediammonium
cations.
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Affiliation(s)
- Beatriz Gil-Hernández
- Departamento de Química, Facultad de Ciencias, Sección Química, Universidad de La Laguna, La Laguna 38206, Tenerife, Spain.,Institute of Materials and Nanotechnology, Universidad de La Laguna, P.O. Box 456, La Laguna E-38200, Tenerife, Spain
| | - Simon Millan
- Institut für Anorganische Chemie und Strukturchemie, Heinrich-Heine Universität Düsseldorf, 40204 Düsseldorf, Germany
| | - Irina Gruber
- Institut für Anorganische Chemie und Strukturchemie, Heinrich-Heine Universität Düsseldorf, 40204 Düsseldorf, Germany
| | - Miguel Quirós
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Granada, 18071 Granada, Spain
| | - David Marrero-López
- Departamento de Física Aplicada I, Universidad de Málaga, Campus Teatinos s/n, 29071 Málaga, Spain
| | - Christoph Janiak
- Institut für Anorganische Chemie und Strukturchemie, Heinrich-Heine Universität Düsseldorf, 40204 Düsseldorf, Germany
| | - Joaquín Sanchiz
- Departamento de Química, Facultad de Ciencias, Sección Química, Universidad de La Laguna, La Laguna 38206, Tenerife, Spain.,Institute of Materials and Nanotechnology, Universidad de La Laguna, P.O. Box 456, La Laguna E-38200, Tenerife, Spain
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Bazhina ES, Shmelev MA, Kiskin MA, Eremenko IL. Structure Forming Role of Alkaline Metal Cations in the Formation of Chromium(III) Complexes with Anions of Cyclopropane-1,1-Dicarboxylic Acid. RUSS J COORD CHEM+ 2021. [DOI: 10.1134/s1070328421030015] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Gil‐Hernández B, Sanchiz J. Synthesis, structure and magnetic properties of a cobalt(II) mesoxalate 1D coordination polymer. Z Anorg Allg Chem 2021. [DOI: 10.1002/zaac.202000431] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Beatriz Gil‐Hernández
- Departamento de Química Sección Química Facultad de Ciencias Universidad de La Laguna 38206 La Laguna Tenerife Spain
| | - Joaquín Sanchiz
- Departamento de Química Sección Química Facultad de Ciencias Universidad de La Laguna 38206 La Laguna Tenerife Spain
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