Ein sechskerniger Gold(I)‐Komplex: [{(Ph₃PAu)₂C(PPh₂AuPPh₂)}₂](ClO₄)₂

Abstract

Blaßgelb, luft‐ und feuchtigkeitsbeständig ist der sechskernige Au1‐Komplex 1 mit zentralem Au2C2P4‐Achtring, an dessen C‐Atome zusätzlich jeweils zwei AuPPh3‐Gruppen gebunden sind. Die Au‐Au‐Abstände in 1 sind Kurz und alle Au‐Atome linear koordiniert. magnified image

Coordination Chemistry of the cyclo‐(P5tBu4)− Ion: Monomeric and Oligomeric Copper(I), Silver(I) and Gold(I) Complexes

“…The AuP bond lengths (230.7(7)–233.2(7) pm) are in agreement with those reported for other Au I complexes 13. 21, 22 The Au⋅⋅⋅Au distances in 8 of between ≈341.6 and 401.2 pm indicate no interaction between the metal centres 21. 22…”

“…The AuP bond lengths in 9 (231.6(3), 232.1(3) pm) are similar to those in other Au I complexes 13. 21, 22 The slightly bent coordination of the two‐coordinate gold atoms (P1Au1P1A 167.0(2)°) is comparable to that of the related gold(I) phosphanido complex [{Au(PMes 2 )} 4 ] 13. The PP bond lengths are typical for single bonds 20.…”

“…The gold atom shows an almost linear geometry (P1Au1P6 172.91(4)°) with bond lengths in the range of other Au I phosphanido and phosphane complexes (Au1P1 233.3(2), Au1P6 230.1(2) pm) 13. 21, 22…”

“…The PP bond lengths are typical for single bonds 20. Gold(I) complexes often exhibit inter‐ or intramolecular AuAu contacts (≈300 pm),21, 22 but the corresponding Au⋅⋅⋅Au distances in tetranuclear gold complex 9 are much longer (≈510.5 pm).…”

Gold(i)-doped films: new routes for efficient room temperature phosphorescent materials

“…Nevertheless, this Au1•••Au2 contact may be the responsible for the closed chair conformation where the two Au-phenanthrene branches are looking to the inner part of the cyclic structure. These distances are in the same range than those previously reported for analogous tetranuclear gold(I) cyclic complexes [41][42][43][44]. Another explanation for this ring conformation is the presence of several intermolecular C-H••• π bifurcated hydrogen bonds between phosphanes and phenanthrenes.…”