X-Ray Crystal Structures of Discrete and Polymeric Chiral Silver Complexes of Monoterpenoid Alkenes

X-Ray crystal structures are reported for five silver(I) complexes of four monoterpenoid alkenes. Discrete mononuclear complexes of the chiral alkenes (1S)-(-)-α-pinene and (1S)(-)-β-pinene with silver perchlorate and silver hexafluorophosphate are described. The achiral diene γ-terpinene forms a discrete mononuclear adduct with silver hexafluorophosphate and a two-dimensional polymeric network structure with silver triflate. The chiral diene (R)-(+)limonene forms a one-dimensional chiral coordination polymer with silver hexafluorophosphate. In all structures the silver atom is η-bonded to the carbon-carbon bond(s) of the monoterpene with slightly longer bond distances to the more substituted carbon of the alkene moiety.