On the Crystal and Magnetic Behavior of ScFe4Al8 Single Crystal

Nuclear and magnetic properties of the ScFe4Al8 single crystal were found to exhibit unparalleled complexity of nuclear and magnetic structures. Our previous neutron measurements revealed presence of two modulation vectors, both along [", ", 0], however with dfferent critical temperatures. Recent experiments forced us to revise our knowledge of the structural ordering in the sample. So far, the crystal structure of this alloy, being of ThMn12-type, has never been questioned

Uranium Hydridoborates: Synthesis, Magnetism, and X-ray/Neutron Diffraction Structures

While uranium hydridoborate complexes containing the [BH₄]⁻ moiety have been well-known in the literature for many years, species with functionalized borate centers remained considerably rare. We were now able to prepare several uranium hydridoborates (<b>1–4</b>) with amino-substituted borate moieties with high selectivity by smooth reaction of [Cp*₂UMe₂] (Cp* = C₅Me₅) and [Cp′₂UMe₂] (Cp′ = 1,2,4-<i>t</i>Bu₃C₅H₂) with the aminoborane H₂BN­(SiMe₃)₂. A combination of nuclear magnetic resonance spectroscopy, deuteration experiments, magnetic SQUID measurements, and X-ray/neutron diffraction studies was used to verify the anticipated molecular structures and oxidation states of <b>1–4</b> and helped to establish a linear tridentate coordination mode of the borate anions