[Au(PPh3)2]+[BF4]−

The Coordination Behaviour of Ferrocene‐based Pyridylphosphine Ligands towards AgI and AuI

“…The Au–P bond lengths are 2.314(4) Å and 2.315(4) Å, and the gold coordination angle is 162.52(13)°. This compares well to values reported for closely related compounds such as, for example, [Au(PPh 3 ) 2 ][BF 4 ], which exhibits Au–P bond lengths of 2.321(3) Å and 2.322(3) Å and aP–Au–P angle of 167.3(1)° 33. The fairly pronounced, but not unusual, deviation of the P–Au–P unit from linearity in[Au( 4 ‐κ 2 P , P )][SbF 6 ] is neither due to Au···F nor to Au···N contacts.…”

Di‐ and Trinuclear Gold Complexes of Diphenylphosphinoethyl‐Functionalised Imidazolium Salts and their N‐Heterocyclic Carbenes: Synthesis and Photophysical Properties

“…The P1-Au1-P2 angle is widened to 151.78(5)8, whereas the P-Au-Cl angles are squeezed together to 105.62(5)8 and 102.59(6)8, and clearly differ from the ideal angle of 1208. Although the AuÀP bond lengths are in the usual range (P1ÀAu1 2.324(2) and P2ÀAu1 2.330(2) ), compared with [(Ph 3 P) 2 Au] [BF 4 ], [73] the AuÀCl distance of 2.709(2) is remarkably long and thus points to a weak bond. The bond length is considerably longer than for typical AuCl complexes (see compound 1 for example), as well as for trigonal planar compounds such as [AuCl(PPh 3 ) 2 ] (d(AuÀCl) = 2.5257 ) [74] and lies in the range between their atoms' covalent (2.38 ) [75] and Van der Waals radii (3.4 ).…”

(Triphenylarsine)gold(I) Complexes: Synthesis of an Oxonium Salt and Redistribution of the Arsine Ligands

“…The anion is crystallo graphically disordered, but the positioning of the fluorine atoms could be resolved in a split model calculation. The situation is similar for the phos phorus analogue [9]. The main difference between the two structures (with Ph^P and Ph^As ligands) is the variation in the Au-E and C-E distances (E = P, As).…”

“…The crystals are monoclinic, space group C2/c, with 8 formula units in the unit cell. The com pound is thus isomorphous with the corresponding triphznylphosphine complex [9]. The lattice con tains bis(triphenylarsine)gold(I) cations loosely as sociated with the tetrafluoroborate anions (Fig.…”