Hydrogen-bonded networks: (phosphine)gold(I) 4-amino-2-pyrimidine-thiolates

Treatment of the gold(I) halide complexes LAuCl (where L = PMe3, PEt3, PPh3, PPh2Py) and PP(AuCl)(2) [where PP = bis(diphenylphosphino)methane 1,1'-bis(diphenylphosphino)ferrocene] with 4-amino-2-pvrimidine-thiol (2-SPym-4-NH2) (one or two equivalents as required) in the presence of sodium methoxide provides the corresponding (phosphine)gold(I) thiolate complexes LAu(2-SPym-4-NH2) and PP[Au(2-SPym-4-NH2)](2), respectively. A polyaurated product [(Ph3PAu)(2)(2-SPym-4-NH2)]BF4 is obtained on treating the thiol with the oxonium complex [(Ph3PAu)(3)O]BF4. The compounds LAu(2-SPym-4-NH2) (L = PPh3, PPh2Py, PEt3) and [(dppm)Au-2(2-SPym-4-NH2)(2)] have been investigated crystallographically. (C) 2002 Elsevier Science B.V. All rights reserved.