STRUCTURAL AND MAGNETIC PROPERTIES OF THE U3M4Ge13 (M = Ru, Os, Rh, Ir)TERNARY GERMANIDES

U3M4Ge13 and U3Os4Ge13 germanides crystallize in a superstructure of the cubic Yb3Rh4Sn13-type structure and exhibit no magnetic order above 4.2 K. On the contrary, U3Ir4Ge13 orders ferromagnetically near Tc ≈ 15-17 K whereas U3Rh4Ge13 orders antiferromagnetically at 22 K

Détermination structurale des fluorozirconates de thallium trivalent

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Cationic Distribution in α-MZr3F15 Series (M = Y, In, Ln, Tl)

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α-Li3InF6, a ternary fluoride with a new structure type

InF6 octahedra sharing common corners with [Li2F6], create an approximately hexagonally packed framework in the plane (1 0 0). The antiferroelectric behaviour evident from dielectric studies is confirmed by the antiparallel displacements of In and Li atoms from octahedral centres. This structure is mainly featured by the disorder observed in the lightest atoms...

Synthesis and structures of two thiocyanato-lanthanoid cages

The cages [{La2(NCS)5(NCMe)6}2O]·MeCN and [{Eu2(NCS)5(NCMe)5}2O]·MeCN have been prepared by redox transmetallation between the lanthanoid metals and mercuric thiocyanate in acetonitrile. The structure of the former has a core of four La atoms bonded to a central oxygen atom. Two La atoms are nine coordinate being bonded to oxygen, four terminal MeCN ligands and four N-bridged thiocyanato ligands, whereas the other two are eight coordinate being bonded to oxygen, the four bridging thiocyanato ligands, two terminal acetonitrile molecules, and a terminal N-bonded thiocyanate ion. In the Eu complex, there is a similar core of four Ln atoms bound to a central oxygen atom, but all Eu atoms are eight coordinate, and have four N-bridged thiocyanate ligands. Two have three MeCN ligands, whilst the other two have one terminal NCS− and two acetonitrile ligands