Gold(I) Complexes of Secondary and Tertiary Amines. Crystal Structure of Triphenylphosphineaurio(I)quinuclidinium Tetrafluoroborate
نویسندگان
چکیده
The secondary amine piperidine and the tertiary amine quinuclidine (l-azabicyclo[2.2.2]octane) were reacted in THF with one equivalent of triphenylphosphinegold(I) tetrafluoro borate, [Ph3PAu]+ BF4“, to give the monoaurated ammonium salts of formula [R„NHp_„)AuPPh3]+ BF4~ (n = 2, 3). The compounds were obtained as crystalline solids in good yields, and were characterized by IR and NM R spectroscopy as well as mass spectrom etry and elemental analysis. The crystal structure of the quinuclidinium salt was determined (space group Pbca, Z = 8). The analysis shows independent formula units with no intermolec ular Au---Au contacts. The A u(I)-N bond (2.11(1) Ä) is significantly longer than the average value found in poly-aurated ammonium salts.
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