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Preparation and Structure of F3As–Au+SbF6–, the Structures of Au(CO)2+ and Au(PF3)2+

✍ Scribed by Ralf Küster; Konrad Seppelt

Publisher
John Wiley and Sons
Year
2000
Tongue
German
Weight
104 KB
Volume
626
Category
Article
ISSN
0372-7874

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✦ Synopsis

AuF 3 , Au(SbF 6 ) 2 , or [Au(SbF 6 ) 2 ´Au(AuF 4 ) 2 ] react with AsF 3 in HF/SbF 5 under formation of F 3 As±Au + SbF 6 ± . This is stable to about 0 °C. The crystal structure reveals strong cationic-anionic interactions through one fluorine atom so that a description as F 3 As±Au±F. . . SbF 5 is also possible (a = 798.3(1), b = 912.0(2), c = 1076.3(2) pm, b = 96.25°, space group P2 1 /n). A similar reaction with CO affords [Au(CO) 2 + ] 2 SbF 6 ± ´Sb 2 F 11 ± (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 PF 3 affords Au(PF 3 ) 2 + SbF 6 ± (a = 825.5(2), b = 824.4(2), c = 876.4(3) pm, c = 119.99°, space group P2 1 /n).

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