showing 13 related works from this author
Room-Temperature Magnetic Bistability in a Salt of Organic Radical Ions
2021
International audience; Cocrystallization of 7,7′,8,8′-tetracyanoquinodimethane radical anion (TCNQ −•) and 3-methylpyridinium-1,2,3,5dithiadiazolyl radical cation (3-MepyDTDA +•) afforded isostructural acetonitrile (MeCN) or propionitrile (EtCN) solvates containing cofacial π dimers of homologous components. Loss of lattice solvent from the diamagnetic solvates above 366 K affords a high-temperature paramagnetic phase containing discrete TCNQ −• and weakly bound π dimers of 3-MepyDTDA +• , as evidenced by X-ray diffraction methods and magnetic susceptibility measurements. Below 268 K, a first-order phase transition occurs, leading to a low-temperature diamagnetic phase with TCNQ −• σ dimer…
Two Polymorphic Forms of a Six-Coordinate Mononuclear Cobalt(II) Complex with Easy-Plane Anisotropy: Structural Features, Theoretical Calculations, a…
2016
A mononuclear cobalt(II) complex [Co(3,5-dnb)2(py)2(H2O)2] {3,5-Hdnb = 3,5-dinitrobenzoic acid; py = pyridine} was isolated in two polymorphs, in space groups C2/c (1) and P21/c (2). Single-crystal X-ray diffraction analyses reveal that 1 and 2 are not isostructural in spite of having equal formulas and ligand connectivity. In both structures, the Co(II) centers adopt octahedral {CoN2O4} geometries filled by pairs of mutually trans terminal 3,5-dnb, py, and water ligands. However, the structures of 1 and 2 disclose distinct packing patterns driven by strong intermolecular O-H···O hydrogen bonds, leading to their 0D→2D (1) or 0D→1D (2) extension. The resulting two-dimensional layers and one-…
Slow magnetic relaxation and water oxidation activity of dinuclear CoIICoIII and unique triangular CoIICoIICoIII mixed-valence complexes
2020
Construction of efficient multifunctional materials is one of the greatest challenges of our time. We herein report the magnetic and catalytic characterization of dinuclear [CoIIICoII(HL1)2(EtOH)(H2O)]Cl·2H2O (1) and trinuclear [CoIIICoII2(HL2)2(L2)Cl2]·3H2O (2) mixed valence complexes. Relevant structural features of the complexes have been mentioned to correlate with their magnetic and catalytic properties. Unique structural features, especially in terms of significant distortions around the CoII centre(s), prompted us to test both spin–orbit coupling (SOC) and zero field splitting (ZFS) methodologies for the systems. The positive sign of D values has been established from X-band EPR spec…
Metal-organic magnets with large coercivity and ordering temperatures up to 242°C.
2020
International audience; Magnets derived from inorganic materials (e.g., oxides, rare-earth–based, and intermetallic compounds) are key components of modern technological applications. Despite considerable success in a broad range of applications, these inorganic magnets suffer several drawbacks, including energetically expensive fabrication, limited availability of certain constituent elements, high density, and poor scope for chemical tunability. A promising design strategy for next-generation magnets relies on the versatile coordination chemistry of abundant metal ions and inexpensive organic ligands. Following this approach, we report the general, simple, and efficient synthesis of light…
CCDC 2097023: Experimental Crystal Structure Determination
2021
Related Article: Anni I. Taponen, Awatef Ayadi, Manu K. Lahtinen, Itziar Oyarzabal, Sébastien Bonhommeau, Mathieu Rouzières, Corine Mathonière, Heikki M. Tuononen, Rodolphe Clérac, Aaron Mailman|2021|J.Am.Chem.Soc.|143|15912|doi:10.1021/jacs.1c07468
CCDC 2097022: Experimental Crystal Structure Determination
2021
Related Article: Anni I. Taponen, Awatef Ayadi, Manu K. Lahtinen, Itziar Oyarzabal, Sébastien Bonhommeau, Mathieu Rouzières, Corine Mathonière, Heikki M. Tuononen, Rodolphe Clérac, Aaron Mailman|2021|J.Am.Chem.Soc.|143|15912|doi:10.1021/jacs.1c07468
CCDC 2097021: Experimental Crystal Structure Determination
2021
Related Article: Anni I. Taponen, Awatef Ayadi, Manu K. Lahtinen, Itziar Oyarzabal, Sébastien Bonhommeau, Mathieu Rouzières, Corine Mathonière, Heikki M. Tuononen, Rodolphe Clérac, Aaron Mailman|2021|J.Am.Chem.Soc.|143|15912|doi:10.1021/jacs.1c07468
CCDC 2097025: Experimental Crystal Structure Determination
2021
Related Article: Anni I. Taponen, Awatef Ayadi, Manu K. Lahtinen, Itziar Oyarzabal, Sébastien Bonhommeau, Mathieu Rouzières, Corine Mathonière, Heikki M. Tuononen, Rodolphe Clérac, Aaron Mailman|2021|J.Am.Chem.Soc.|143|15912|doi:10.1021/jacs.1c07468
CCDC 1983877: Experimental Crystal Structure Determination
2020
Related Article: Panagiota Perlepe, Itziar Oyarzabal, Aaron Mailman, Morgane Yquel, Mikhail Platunov, Iurii Dovgaliuk, Mathieu Rouzières, Philippe Négrier, Denise Mondieig, Elizaveta A. Suturina, Marie-Anne Dourges, Sébastien Bonhommeau, Rebecca A. Musgrave, Kasper S. Pedersen, Dmitry Chernyshov, Fabrice Wilhelm, Andrei Rogalev, Corine Mathonière, Rodolphe Clérac|2020|Science|6516|587|doi:10.1126/science.abb3861
CCDC 1477729: Experimental Crystal Structure Determination
2016
Related Article: Subhadip Roy, Itziar Oyarzabal, Julia Vallejo, Joan Cano, Enrique Colacio, Antonio Bauza, Antonio Frontera, Alexander M. Kirillov, Michael G. B. Drew, and Subrata Das|2016|Inorg.Chem.|55|8502|doi:10.1021/acs.inorgchem.6b01087
CCDC 2007863: Experimental Crystal Structure Determination
2020
Related Article: Panagiota Perlepe, Itziar Oyarzabal, Aaron Mailman, Morgane Yquel, Mikhail Platunov, Iurii Dovgaliuk, Mathieu Rouzières, Philippe Négrier, Denise Mondieig, Elizaveta A. Suturina, Marie-Anne Dourges, Sébastien Bonhommeau, Rebecca A. Musgrave, Kasper S. Pedersen, Dmitry Chernyshov, Fabrice Wilhelm, Andrei Rogalev, Corine Mathonière, Rodolphe Clérac|2020|Science|6516|587|doi:10.1126/science.abb3861
CCDC 1477730: Experimental Crystal Structure Determination
2016
Related Article: Subhadip Roy, Itziar Oyarzabal, Julia Vallejo, Joan Cano, Enrique Colacio, Antonio Bauza, Antonio Frontera, Alexander M. Kirillov, Michael G. B. Drew, and Subrata Das|2016|Inorg.Chem.|55|8502|doi:10.1021/acs.inorgchem.6b01087
CCDC 2097024: Experimental Crystal Structure Determination
2021
Related Article: Anni I. Taponen, Awatef Ayadi, Manu K. Lahtinen, Itziar Oyarzabal, Sébastien Bonhommeau, Mathieu Rouzières, Corine Mathonière, Heikki M. Tuononen, Rodolphe Clérac, Aaron Mailman|2021|J.Am.Chem.Soc.|143|15912|doi:10.1021/jacs.1c07468