Preparation and structure of F3As-Au+SbF6-, the structures of Au(CO)(2)(+)and Au(PF3)(2)(+)

AuF3, Au(SbF6)(2), or [Au(SbF6). Au(AuF4)(2)] react with AsF3 in HF/SbF5 un der formation of F3As-Au1SbF6- This is stable to about 0 degrees C. The cry stal structure reveals strong cationic-anionic interactions through one flu orine atom so that a description as F3As-Au-F...SbF5 is also possible (a = 798.3(1), b = 912.0(2), c = 1076.3(2) pm, beta = 96.25 degrees, space group P2(1)/n). A similar reaction with CO affords [Au(CO)(2)(+)](2)SbF6-. Sb2F1 1- (a = 1404.8(1), b = 622.86(3), c = 1130.2(1) pm, space group Pmma). The cations in these compounds have the expected linear geometry. Reaction with PF3 affords Au(PF3)(2)+SbF6- (a = 825.5(2), b = 824.4(2), c = 876.4(3) pm, gamma = 119.99 degrees, space group P2(1)/n).