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Intercalation of Neutral Guests in Pillared Salt Cocrystals of 5-Ureidosalyclic Acid (2025)
Journal Article
Kennedy, S. R., Blundell, T. J., Henderson, E. F., Miquelot, A. P., & Steed, J. W. (online). Intercalation of Neutral Guests in Pillared Salt Cocrystals of 5-Ureidosalyclic Acid. Crystal Growth and Design, https://doi.org/10.1021/acs.cgd.4c01715

The salts of 5-ureidosalyclic acid (5-USA) form a range of pillared salt inclusion complexes from basic solvents, namely, triethylamine, piperidine, morpholine, and 4-ethylpyridine. The triethylamine derivative is unsolvated, while the other salts in... Read More about Intercalation of Neutral Guests in Pillared Salt Cocrystals of 5-Ureidosalyclic Acid.

2D Quantum Spin-Liquid Candidate Including a Chiral Anion: κ-(BEDT-TTF)<inf>2</inf>[B<inf>R/S</inf>(salicylate)<inf>2</inf>] (2025)
Journal Article
Blundell, T. J., Sneade, K., Ogar, J. O., Yamashita, S., Akutsu, H., Nakazawa, Y., Yamamoto, T., & Martin, L. (2025). 2D Quantum Spin-Liquid Candidate Including a Chiral Anion: κ-(BEDT-TTF)2[BR/S(salicylate)2]. Journal of the American Chemical Society, 147(7), 5658-5668. https://doi.org/10.1021/jacs.4c12386

The quantum spin-liquid state was first theorized by Anderson 50 years ago and the challenge remains to realize a quantum spin-liquid material. A handful of two-dimensional molecular candidates have attracted huge attention over the past 30 years owi... Read More about 2D Quantum Spin-Liquid Candidate Including a Chiral Anion: κ-(BEDT-TTF)<inf>2</inf>[B<inf>R/S</inf>(salicylate)<inf>2</inf>].

Radical-cation salts of BEDT-TTF with tris-coordinated racemic dysprosium(iii) and terbium(iii) anions (2025)
Journal Article
Howarth, E., Lopez, J., Ogar, J. O., Blundell, T. J., Akutsu, H., Nakazawa, Y., Imajo, S., Ihara, Y., Coles, S. J., Horton, P. N., Christensen, J., & Martin, L. (online). Radical-cation salts of BEDT-TTF with tris-coordinated racemic dysprosium(iii) and terbium(iii) anions. Dalton Transactions, https://doi.org/10.1039/d4dt03484h

This paper reports the synthesis, crystal structures and conducting properties of the first BEDT-TTF radical-cation salts with D3 symmetry tris-coordinated racemic lanthanide(III) anions. It is also the first crystallographic determination of the nin... Read More about Radical-cation salts of BEDT-TTF with tris-coordinated racemic dysprosium(iii) and terbium(iii) anions.

Spontaneous Resolution of the Fe(C2O4)3 Anion and Inclusion of Chiral Guest Molecules in BEDT-TTF Radical-Cation Salts (2025)
Journal Article
Ogar, J. O., Wallis, J. D., Blundell, T. J., Rusbridge, E. K., Mantle, A., Akutsu, H., Nakazawa, Y., Imajo, S., & Martin, L. (2025). Spontaneous Resolution of the Fe(C2O4)3 Anion and Inclusion of Chiral Guest Molecules in BEDT-TTF Radical-Cation Salts. Inorganic Chemistry, 64(2), 1075-1084. https://doi.org/10.1021/acs.inorgchem.4c04622

We report the synthesis of three radical-cation salts of BEDT-TTF from racemic tris(oxalato)ferrate by electrocrystallization in the presence of chiral molecules. In the presence of enantiopure l-(+)-tartaric acid, we observe spontaneous resolution o... Read More about Spontaneous Resolution of the Fe(C2O4)3 Anion and Inclusion of Chiral Guest Molecules in BEDT-TTF Radical-Cation Salts.

A Series of Enantiopure BEDT-TTF-acetamide Derivatives with Two Stereogenic Centres. (2024)
Journal Article
Wallis, J. D., Martin, L., Ogar, J., Short, J. I., Rusbridge, E. K., Yang, S., & Blundell, T. J. (in press). A Series of Enantiopure BEDT-TTF-acetamide Derivatives with Two Stereogenic Centres. New Journal of Chemistry, https://doi.org/10.1039/d4nj03967j

A method for the synthesis of twelve enantiopure derivatives of BEDT-TTF which have two stereogenic centres is reported comprising six diastereomeric pairs. The donors are derivatives of enantiopure (BEDT-TTF)-acetamide bearing a chiral substituent o... Read More about A Series of Enantiopure BEDT-TTF-acetamide Derivatives with Two Stereogenic Centres..

Chiral and racemic BINOL spiroborate anions and radical-cation salt with BEDT-TTF (2024)
Journal Article
Ogar, J. O., Blundell, T. J., Usman, R., Vavrovič, M., & Martin, L. (2024). Chiral and racemic BINOL spiroborate anions and radical-cation salt with BEDT-TTF. Polyhedron, 264, Article 117262. https://doi.org/10.1016/j.poly.2024.117262

Sodium salts of the spiroborate anion bis[(1,1′-binaphthalene)-2,2′-diolato-O,O’]borate in enantiopure and racemic forms have been obtained through reaction of BORAX (sodium tetraborate hexahydrate) with the corresponding stereoisomers of BINOL [(1,1... Read More about Chiral and racemic BINOL spiroborate anions and radical-cation salt with BEDT-TTF.

S ‐Aryl Substitution Enhances Acidity of the 1,2,4‐Triazolium Scaffold (2024)
Journal Article
Smith, M. S., Blundell, T. J., Hickson, I., & O'Donoghue, A. C. (online). S ‐Aryl Substitution Enhances Acidity of the 1,2,4‐Triazolium Scaffold. European Journal of Organic Chemistry, https://doi.org/10.1002/ejoc.202400753

The 1,2,4‐triazolium scaffold in asymmetric organocatalysis results in remarkable rate accelerations, with reactions typically occurring via N‐heterocyclic carbene (NHC) intermediates. Although the most acidic NHC pre‐catalyst class, there remains sc... Read More about S ‐Aryl Substitution Enhances Acidity of the 1,2,4‐Triazolium Scaffold.

Netting Crystal Nuclei in Metal–Organic Framework Cavities (2024)
Journal Article
Braschinsky, A., Blundell, T. J., & Steed, J. W. (online). Netting Crystal Nuclei in Metal–Organic Framework Cavities. Small Structures, Article 2400300. https://doi.org/10.1002/sstr.202400300

Nucleation plays an important role in crystallization outcomes, but it is still poorly understood because it occurs on short timescales and small size scales. Consequently, nucleation mechanisms are still challenging to comprehend and predict. Gainin... Read More about Netting Crystal Nuclei in Metal–Organic Framework Cavities.

Crystalline Molecular Cleft Clathrates (2024)
Journal Article
Lynch, A. V., Blundell, T. J., & Steed, J. W. (2024). Crystalline Molecular Cleft Clathrates. Crystal Growth and Design, 24(17), 7271-7277. https://doi.org/10.1021/acs.cgd.4c00928

A rigid bis­(urea) molecular cleft (BU1) based on the cis diastereomer of a rigid isophorone-derived spacer forms solid-state inclusion complexes with a range of small molecular guests. Larger guests can be accommodated by a shift in orientation to o... Read More about Crystalline Molecular Cleft Clathrates.

Spin density waves and ground state helices in EuGa2.4Al1.6 (2024)
Journal Article
Littlehales, M. T., Moody, S. H., Bereciartua, P. J., Mayoh, D. A., Parkin, Z. B., Blundell, T. J., Unsworth, E., Francoual, S., Balakrishnan, G., Alba Venero, D., & Hatton, P. D. (2024). Spin density waves and ground state helices in EuGa2.4Al1.6. Physical Review Research, 6(3), Article L032015. https://doi.org/10.1103/physrevresearch.6.l032015

The Eu⁢(Ga1−𝑥⁢Al𝑥)4 series is composed of centrosymmetric structures which exhibit a wide range of rich topological phenomena, including some members hosting magnetic skyrmions. In this letter, we investigate the previously unreported intermediate co... Read More about Spin density waves and ground state helices in EuGa2.4Al1.6.

BEDT-TTF radical-cation salts with tris(oxalato)chromate and guest additives (2024)
Journal Article
Blundell, T. J., Ogar, J. O., Brannan, M. J., Rusbridge, E. K., Wallis, J. D., Akutsu, H., …Martin, L. (2024). BEDT-TTF radical-cation salts with tris(oxalato)chromate and guest additives. RSC Advances, 14(26), 18444-18452. https://doi.org/10.1039/d4ra03425b

The family of radical-cation salts β′′-(BEDT-TTF)4[(A)M3+(C2O4)3]·guest (M = Fe, Cr, Ga, Al, Co, Mn, Rh, Ru; A = K+, H3O+, NH4+) has produced superconductors, metals, semiconductors, and metal–insulators through introduction of different guest molecu... Read More about BEDT-TTF radical-cation salts with tris(oxalato)chromate and guest additives.

Introduction of new guest molecules into BEDT-TTF radical-cation salts with tris(oxalato)ferrate (2024)
Journal Article
Blundell, T. J., Rusbridge, E. K., Pemberton, R. E., Brannan, M. J., Morritt, A. L., Ogar, J. O., Wallis, J. D., Akutsu, H., Nakazawa, Y., Imajo, S., & Martin, L. (2024). Introduction of new guest molecules into BEDT-TTF radical-cation salts with tris(oxalato)ferrate. CrystEngComm, 26(14), 1962-1975. https://doi.org/10.1039/d4ce00099d

Radical-cation salts of formula β′′-(BEDT-TTF)4[(H3O)Fe(C2O4)3]·guest have produced a large number of superconductors and provided a route to introduce magnetism and chirality into the same multifunctional material. A relationship has been found in t... Read More about Introduction of new guest molecules into BEDT-TTF radical-cation salts with tris(oxalato)ferrate.

Quantitative Raman microscopy to describe structural organisation in hollow microcrystals built from silicon catecholate and amines (2023)
Journal Article
Volkov, V. V., Blundell, T. J., Argent, S., & Perry, C. C. (2023). Quantitative Raman microscopy to describe structural organisation in hollow microcrystals built from silicon catecholate and amines. Dalton Transactions, 52(21), 7249-7257. https://doi.org/10.1039/d3dt00856h

Macroscopic scale hollow microcrystals are a promising group of materials for gas and liquid uptake as well as sensing. In this contribution we describe the structure of hollow hexagonal cross-section crystals formulated as salts of a silicon catecho... Read More about Quantitative Raman microscopy to describe structural organisation in hollow microcrystals built from silicon catecholate and amines.

Slow magnetic relaxation in Fe(ii) m-terphenyl complexes (2022)
Journal Article
Valentine, A. J., Geer, A. M., Blundell, T. J., Tovey, W., Cliffe, M. J., Davies, E. S., Argent, S. P., Lewis, W., McMaster, J., Taylor, L. J., Reta, D., & Kays, D. L. (2022). Slow magnetic relaxation in Fe(ii) m-terphenyl complexes. Dalton Transactions, 51(47), 18118-18126. https://doi.org/10.1039/d2dt03531f

Two-coordinate transition metal complexes are exciting candidates for single-molecule magnets (SMMs) because their highly axial coordination environments lead to sizeable magnetic anisotropy. We report a series of five structurally related two-coordi... Read More about Slow magnetic relaxation in Fe(ii) m-terphenyl complexes.

Molecular conductors from bis(ethylenedithio)tetrathiafulvalene with tris(oxalato)gallate and tris(oxalato)iridate (2022)
Journal Article
Blundell, T. J., Morritt, A. L., Rusbridge, E. K., Quibell, L., Oakes, J., Akutsu, H., …Martin, L. (2022). Molecular conductors from bis(ethylenedithio)tetrathiafulvalene with tris(oxalato)gallate and tris(oxalato)iridate. Materials Advances, 3(11), 4724-4735. https://doi.org/10.1039/d2ma00384h

We present the synthesis, crystal structures and conducting properties of six new BEDT-TTF radical-cation salts with the tris(oxalato)gallate or -iridate anion. The use of halobenzenes gives 4 : 1 β′′ metallic or superconducting salts with tris(oxala... Read More about Molecular conductors from bis(ethylenedithio)tetrathiafulvalene with tris(oxalato)gallate and tris(oxalato)iridate.

Enantiopure and racemic radical-cation salts of B(mandelate)2− and B(2-chloromandelate)2− anions with BEDT-TTF (2022)
Journal Article
Blundell, T. J., Lopez, J. R., Sneade, K., Wallis, J. D., Akutsu, H., Nakazawa, Y., …Martin, L. (2022). Enantiopure and racemic radical-cation salts of B(mandelate)2− and B(2-chloromandelate)2− anions with BEDT-TTF. Dalton Transactions, 51(12), 4843-4852. https://doi.org/10.1039/d2dt00024e

We report the first examples of radical-cation salts of BEDT-TTF with spiroborate anions [B(mandelate)2]− and [B(2-chloromandelate)2]−, synthesized from either enantiopure or racemic bidentate mandelate or chloromandelate ligands. In the salts prepar... Read More about Enantiopure and racemic radical-cation salts of B(mandelate)2− and B(2-chloromandelate)2− anions with BEDT-TTF.

Exceptionally high temperature spin crossover in amide-functionalised 2,6-bis(pyrazol-1-yl)pyridine iron(ii) complex revealed by variable temperature Raman spectroscopy and single crystal X-ray diffraction (2021)
Journal Article
Attwood, M., Akutsu, H., Martin, L., Blundell, T. J., Le Maguere, P., & Turner, S. S. (2021). Exceptionally high temperature spin crossover in amide-functionalised 2,6-bis(pyrazol-1-yl)pyridine iron(ii) complex revealed by variable temperature Raman spectroscopy and single crystal X-ray diffraction. Dalton Transactions, 50(34), 11843-11851. https://doi.org/10.1039/d1dt01743h

The synthesis of a novel amide-functionalised 2,6-bis(pyrazol-1-yl)pyridine-4-carboxamide ligand (bppCONH2) is described. The complex salts [Fe(bppCONH2)2](BF4)2 and [Fe(bppCONH2)2](ClO4)2 were synthesised and characterised by SQUID magnetometry, dif... Read More about Exceptionally high temperature spin crossover in amide-functionalised 2,6-bis(pyrazol-1-yl)pyridine iron(ii) complex revealed by variable temperature Raman spectroscopy and single crystal X-ray diffraction.

First Molecular Superconductor with the Tris(Oxalato)Aluminate Anion, β″-(BEDT-TTF)4(H3O)Al(C2O4)3·C6H5Br, and Isostructural Tris(Oxalato)Cobaltate and Tris(Oxalato)Ruthenate Radical Cation Salts (2021)
Journal Article
Blundell, T., Brannan, M., Mburu-Newman, J., Akutsu, H., Nakazawa, Y., Imajo, S., & Martin, L. (2021). First Molecular Superconductor with the Tris(Oxalato)Aluminate Anion, β″-(BEDT-TTF)4(H3O)Al(C2O4)3·C6H5Br, and Isostructural Tris(Oxalato)Cobaltate and Tris(Oxalato)Ruthenate Radical Cation Salts. Magnetochemistry, 7(7), Article 90. https://doi.org/10.3390/magnetochemistry7070090

Peter Day’s research group reported the first molecular superconductor containing paramagnetic metal ions in 1995, β″-(BEDT-TTF)4(H3O)Fe(C2O4)3·C6H5CN. Subsequent research has produced a multitude of BEDT-TTF-tris(oxalato)metallate salts with a varie... Read More about First Molecular Superconductor with the Tris(Oxalato)Aluminate Anion, β″-(BEDT-TTF)4(H3O)Al(C2O4)3·C6H5Br, and Isostructural Tris(Oxalato)Cobaltate and Tris(Oxalato)Ruthenate Radical Cation Salts.

Chiral metal down to 4.2 K - a BDH-TTP radical-cation salt with spiroboronate anion B(2-chloromandelate)2− (2021)
Journal Article
Blundell, T. J., Brannan, M., Nishimoto, H., Kadoya, T., Yamada, J., Akutsu, H., …Martin, L. (2021). Chiral metal down to 4.2 K - a BDH-TTP radical-cation salt with spiroboronate anion B(2-chloromandelate)2−. Chemical Communications, 57(44), 5406-5409. https://doi.org/10.1039/d1cc01441b

We report the first example of a chiral BDH-TTP radical-cation salt. Chirality is induced in the structure via the use of a chiral spirobor-onate anion where three stereocentres are present, one on each chiral ligand and one on the boron centre. Desp... Read More about Chiral metal down to 4.2 K - a BDH-TTP radical-cation salt with spiroboronate anion B(2-chloromandelate)2−.