Metallophilicity:  The Dimerization of Bis[(triphenylphosphine)gold(I)]chloronium Cations

Cluster self-assembly of di[gold(I)]halonium cations

“…Selected interatomic distances and angles are shown in the corresponding figure legends and in Table 2. The data for 2 were included in a preliminary communication (27). Thermal parameters and tables of all interatomic distances and angles have been deposited with the Cambridge Crystallographic Data Centre (12 Union Road, Cambridge CB2 1EZ, U.K.).…”

“…27) has shown that the di(gold)halonium salts have an extremely interesting supramolecular chemistry that only emerges as larger counterions are introduced. It appears that changes in the Coulomb energies of the ionic lattice allow weak forces based on closed-shell interactions Au-Au (d 10 -d 10 ) between the metal centers to contribute significantly to the lattice energy (28)(29)(30)(31).…”

Tetraedrische Gold(I)‐Cluster mit Carba‐closo‐dodecaboranylethinido‐Liganden: [{12‐(R3PAu)2CC‐closo‐1‐CB11H11}2]

“…[1][2][3][4] Intermolekulare Gold-Gold-Wechselwirkungen liegen wiederum in der Regel den Selbstorganisationsprozessen zugrunde. [2,5] Salze mit den vierkernigen Bis[triphenylphosphangold(I)]halonium-Dikationen A, [6,7] in denen vier Gold-Atome eine verzerrt-tetraedrische Anordnung mit vier relativ kleinen inter-und zwei größeren intramolekularen Au···Au-Abständen aufweisen, sind ungewöhn-liche Verbindungen dieses Typs, die ausschließlich im Festkörper stabil sind. Für das Bis(trigoldoxonium)-Dikation B [8] und den Bis(tetraauriomethan)-Komplex C [9] wurde ein analoger Aufbau ebenfalls nur im Festkörper beobachtet.…”

Silver-free Gold(I) Catalysts for Organic Transformations

“…It therefore appears that gold(I) hydroxide catalysts are a true alternative to the already established catalytic systems. − in the solid state established through interionic aurophilic bonding [103]. With C 6 H 4 -1,4-(CH 2 PPh 2 ) 2 even a cyclic chloronium salt was obtained [104].…”