Single-Crystal X-Ray Diffraction and Electronic Band Structure Studies of PdTeI

Strong charge density wave fluctuation and sliding state in PdTeI with quasi-one-dimensional PdTe chains

“…High-quality single crystals of PdTeI were grown using hydrothermal method [13,14]. Pd powder, Te and I2 chunks were mixed together with the ratio of 1 : 1 : 2.…”

“…Recent X-ray diffraction (XRD) and neutron powder diffraction (NPD) studies on PdTeI polycrystal with quasi-1D PdTe chains along the c axis revealed that there is a dynamic charge separation of Pd ions with local Pd 2+ and Pd 4+ pair persisting at high 3 temperature and this dynamic charge disproportionation becomes static without longrange CDW ordering at T < 50 K [12]. Moreover, a theoretical study also suggested that this system is susceptible to the instability of charge density [13]. These studies motivates us to examine on the crystal structure, electronic transport properties, and electronic structure of PdTeI single crystals.…”

The Valence Problem of Pd4Br4Te3

“…Low-temperature solvothermal synthesis has proven to be a fruitful preparative method for gaining access to ternary chalcogen halogen compounds of the platinum group metals with unforeseen structural features and intricate bonding interactions and physical properties. [1][2][3][4][5][6][7][8][9][10] Halogen-rich compounds, as for instance [PdBr 2 A C H T U N G T R E N N U N G (TeBr 2 ) 2 ] [1] or [PtCl 4 -A C H T U N G T R E N N U N G (SeCl 4 ) 2 ], [2] exhibit neutral chalcogen di-or tetrahalide species coordinating to the metal atoms, whereas phases that contain less halogen, for example, [Pd 8 Cl 8 (S 2 ) 4 ], [3] [Pd 6 Cl 6 (S 2 ) 3 ] [4] or [Pd 4 I 6 Se 2 ] [5] usually contain dichalcogenide dumbbells. If the phases are rich in chalcogen, like [PdCl 2 Se 6 ] , [6] [PdBr 2 Se 6 ], [6,7] or [PdCl 2 Se 8 ], [8] neutral chalcogen moieties are coordinating to the metal atoms.…”

“…[11][12][13][14][15] Some related noble metal chalcogenide halides exhibit mixed electron-and ion-conducting properties. [16] Most of the phases identified so far were prepared by solvothermal routes using halogen, [10] chalcogen halide [3] or a concentrated aqueous hydrohalic acid [9] as liquid phase.…”

Eine neue Form von PdSCl: Der molekulare Komplex Tris(μ4-disulfido)-hexa-μ2-chloro-hexapalladium(II) [Pd6(S2)3Cl6]Professor Joachim Strähle zum 65. Geburtstag gewidmet

“…Ternäre Verbindungen sind zu erhalten, wenn die Umsetzungen bei tieferen Temperaturen (T Ͻ 200°C) unter hydrothermalen oder solvothermalen Bedingungen durchgeführt werden. Bei entsprechenden Versuchen mit schwefelreicheren S x Cl 2 -Lösungen (x ϭ 4Ϫ8) hatten wir schwarze Kristalle erhalten, denen nach Aussage der Elektronenstrahl-Mikroanalyse die einheitliche Zusammensetzung PdSCl zukam [5] (2) .1516 (3) .2500 .7926(2) 24(1) Pd (3) .5910 (2) .1267 (1) .5573(2) 31(1) Pd (4) .9004 (2) .1279 (1) .9081(2) 33(1) S (1) .5884(8) .1605 (5) .8022(6) 43(1) S (2) .0391 (6) .1224 (4) .5971(5) 24(1) S (3) .8570 (7) .0323 (4) .6827(5) 31(1) Cl (1) .6343 (7) .1031 (4) .3145(5) 37(1) Cl (2) .3367(10) .2500 .4490(10) 47(2) Cl (3) .2246 (7) .1051 (4) .9814(6) 45(1) Cl (4) . Mit Halogenen im Überschuss sind im Falle von Palladium molekulare Komplexe PdX 2 (EX 2 ) 2 zu erhalten, bei denen Chalkogenhalogenide EX 2 neben Halogenatomen als Liganden in der Koordinationssphäre der Metalle gebunden sind [1,2].…”