Cs₂Pt, ein Platinid(‐II) mit vollständiger Ladungstrennung

Low-energy electron elastic scattering cross sections for excited Au and Pt atoms

“…Platinum has a high EA value compared to any chalcogen atom that readily form negatively charged dianions. This has been exploited to synthesize the first ionic compound Cs 2 Pt containing Pt atoms in a negative oxidation state [24], namely (Cs 2+ )Pt 2À ; its stability is attributed partly to the strong polarization of the Pt 2À ions and the Cs 2+ shells. Furthermore, dissociative electron attachment has been investigated in phenyl azide, with the interpretation that the observed negative ion fragments at higher energies are generated through low-lying shape resonances or higher core-excited resonances [25].…”

[Tl8]6− in Cs8Tl8O – ein “nackter” achteckiger closo‐Deltaeder als Clusteranion

“…[Tl 13 ] 10À mit der Struktur eines zentrierten Ikosaeders. [13] Im Zusammenhang mit unseren Untersuchungen an Auriden [14] und Platiniden [15] waren wir ebenso an Tl …”

Dibariumplatinide: (Ba2+)2Pt2−⋅2 e−and Its Relation to the Alkaline‐Earth‐Metal Subnitrides

“…In this case dynamic correlation contributions have to be assumed. [9] Above À0.5 Ry, the densities of states of both Ba 2 Pt and Ba 2 N are very similar (Figure 3), showing a lower part describing the ionic layers and an upper delocalized part (Ba 2 Pt: above À0.28 Ry; Ba 2 N: above À0.19 Ry). The delocalized part is mainly built from …”

“…Also, striking parallels to the chemistry of halogens have been uncovered, such as the close crystal chemical correspondences of auride and halide compounds, [7] and the disproportionation of elemental gold in basic media. [8] For platinum, only recently evidence for its capability to exist as an anion has been provided: Cs 2 Pt, [9] forming red transparent crystals, shows full charge separation, and thus is composed of the ions Cs + and Pt 2À . Treating platinum with barium, which is less electropositive than cesium, again induces charge transfer, which now, however, is incomplete.…”