Preparation and crystal structures of dicyanamido(triphenylphosphane)gold(I) and nitrosodicyanomethanido(triphenylphosphane)gold(I)

The coordination compounds [(Ph3P)Au{N(CN)(2)}] (1) and [(Ph3P)Au{ONC(CN)(2 )}] (2) are obtained by the reaction of [Au(PPh3)]NO3 with Na[N(CN)(2)] or K[ONC(CN)(2)] in CH2Cl2.(.) The compounds are characterized by IR spectrosc opy and by crystal structure determination. 1. crystallizes triclinic in th e space group P (1) over bar with a = 930.16(4), b=1011.89(13), c=1118.35(1 6)pm. alpha =115.327(10). beta= 90.899(8), gamma= 103.394(8)degrees, Z = 2. 2 crystallizes monoclinic in the space group P2(1)/n with a = 832.59(10), b = 1139.30(16), c = 2078.9(4) pm, beta= 99.84(2)degrees, Z = 4. The crysta l structures of both compounds are built up by pairs of antiparallel orient ed molecules with Linear coordinated gold atoms and weak intermolecular Au- N-interactions.