A5003743132- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Magnetism in coordination complexes
- Lanthanide and Transition Metal Complexes
- Metal-Organic Frameworks: Synthesis and Applications
- Polyoxometalates: Synthesis and Applications
- Iron oxide chemistry and applications
- Crystallography and molecular interactions
- Metal complexes synthesis and properties
- Vanadium and Halogenation Chemistry
- Supramolecular Chemistry and Complexes
- Radioactive element chemistry and processing
- Advanced NMR Techniques and Applications
- Metal-Catalyzed Oxygenation Mechanisms
- Magnetic Bearings and Levitation Dynamics
- Magnetic Properties of Alloys
- Magnetic and Electromagnetic Effects
- Magnetic properties of thin films
- Heusler alloys: electronic and magnetic properties
- Advanced Chemical Physics Studies
University of Edinburgh
2017-2021
University of Glasgow
2019
Indian Institute of Technology Bombay
2019
Tohoku University
2019
Universidad de Zaragoza
2019
Bielefeld University
2019
Abstract The dissolution of anhydrous iron bromide in a mixture pyridine and acetonitrile, the presence an organic amine, results formation [Fe 34 ] metal oxide molecule, structurally characterised by alternate layers tetrahedral octahedral Fe III ions connected hydroxide ions. outer shell complex is capped combination molecules Magnetic data, measured at temperatures as low 0.4 K fields up to 35 T, reveal competing antiferromagnetic exchange interactions; DFT calculations showing that...
C-alkylpyrogallol[4]arenes (PgCs) have been studied for their ability to form metal-organic nanocapsules (MONCs) through coordination appropriate metal ions. Here we present the synthesis and characterization of an MnII/MnIII-seamed MONC in addition its electrochemical magnetic behavior. This assembles from 24 manganese ions 6 PgCs, while additional ion is located on capsule interior, anchored introduction bridging nitrite The latter originate situ redox reaction that occurs during...
Under suitable conditions, C-alkylpyrogallol[4]arenes (PgCs) arrange into spherical metal–organic nanocapsules (MONCs) upon coordination to appropriate metal ions. Herein we present the synthesis and structural characterization of a novel FeII/FeIII-seamed MONC, as well studies related its electrochemical magnetic behaviors. Unlike other MONCs that are assembled through 24 ions, this nanocapsule comprises 32 Fe uncovering 8 additional sites situated between constituent PgC subunits. The FeII...
A series of di-alkoxo bridged Cr(<sc>iii</sc>) dimers have been synthesised using pyridine alcohol ligands.
A family of heterometallic Anderson-type 'wheels' general formula [MIII2MII5(hmp)12](ClO4)4 (where MIII = Cr or Al and MII Ni Zn giving [Cr2Ni5] (1), [Cr2Zn5] (2), [Al2Ni5] (3) [Al2Zn5] (4); hmpH 2-pyridinemethanol) have been synthesised solvothermally. The metallic skeleton common to all structures describes a centred hexagon with the sites disordered around outer wheel. structural disorder has characterised via single crystal X-ray crystallography, 1-3D 1H 13C solution-state NMR...
Heteroleptic ligands induce ferromagnetic exchange in Cr(<sc>iii</sc>) dimers.
Dissolution of FeBr3 in a mixture acetonitrile and 3,4-lutidine the presence an amine results formation [Fe30] molecular metal oxide containing alternating layers tetrahedral octahedral FeIII ions. Mass spectrometry suggests cluster is formed quickly remains stable solution, while magnetic measurements DFT calculations reveal competing antiferromagnetic exchange interactions.
Two structurally analogous Mn-seamed C-alkylpyrogallol[4]arene (PgCn)-based metal–organic nanocapsules (MONCs) have been synthesized under similar reaction conditions and characterized by crystallographic, electrochemical, magnetic susceptibility techniques. Both MONCs contain 24 Mn centers, but, somewhat surprisingly, marked differences in oxidation state distribution are observed upon analysis. One MONC contains exclusively MnII ions, while the other is a mixed-valence MnII/ MnIII...
A family of heterometallic Anderson-type 'wheels' general formula [MM(hmp)12]4+ (MIII = Cr or Al and MII Ni Zn, Hhmp 2-pyridinemethanol) has been extended to include MIII Co, Fe, Mn Cu, affording five new species formulae [Cr2Co5(hmp)12](ClO4)4 (1), [Cr2Fe5(hmp)12](ClO4)4 (2), [Cr2Mn5(hmp)12](ClO4)4 (3), [Cr2Cu5(hmp)12](ClO4)2(NO3)2 (4) [Al2Co5(hmp)12](ClO4)4 (5). As per previous members, the metallic skeleton common cations 1-5 describes a centred hexagon with two sites disordered around...
Reaction between NiCl2·6H2O, 2-hydroxy-4-methyl-6-phenyl-pyridine-3-amidoxime (H2L), benzoic acid, and M(NO3)3·6H2O (M = Gd, Y) in MeCN under basic conditions yields the complexes [NiII4GdIII5(PhCOO)10(HL)4(HLzw)4(OH)2(NO3)2]Cl·13.6MeCN·H2O (1·13.6MeCN·H2O) [NiII4YIII5(PhCOO)10(HL)4(HLzw)4(OH)2(NO3)1.5(H2O)0.5]0.5Cl(NO3)·3H2O (2·3H2O). Both clusters display similar structures, consisting of a bell-shaped {NiII4MIII5} unit, which linear "zigzag" {Ni4} subunit bisects central {MIII5} "ring"....
Abstract The dissolution of anhydrous iron bromide in a mixture pyridine and acetonitrile, the presence an organic amine, results formation [Fe 34 ] metal oxide molecule, structurally characterised by alternate layers tetrahedral octahedral Fe III ions connected hydroxide ions. outer shell complex is capped combination molecules Magnetic data, measured at temperatures as low 0.4 K fields up to 35 T, reveal competing antiferromagnetic exchange interactions; DFT calculations showing that...
Heterometallic [(V IV O) 2 M 5 ] Anderson wheels (M = Ni, 1; Co, 2), synthesised solvothermally, exhibit competing magnetic exchange interactions.