Structural and magnetic characterization of [Fe(Cp*)(2)]DR-DCNQI, R=Me andPh

The synthesis and magnetic properties of [Fe(Cp*)(2)]DR-DCNQI, R=Me and Ph, are presented and discussed. The crystal structure for the [Fe(Cp*)(2)]DMe -DCNQI compound consists of an array of parallel stacks of alternating cati ons [Fe(Cp*)(2)](+) and anions DMe-DCNQI; . .D(+)A(-)D(+)A(-)D(+)A(-). .. S trong intrachain DA FM interactions dominate the magnetic behavior of [Fe(C p*)(2)]DMe-DCNQI and the competition between those interactions and weak AF M interchain interactions results in the obsecration of a metamagnetic beha vior at low temperatures, with T-N=3 K and H-C=2.5 kG, at 1.8 K. In the cas e of [Fe(Cp*)(2)]DPh-DCNQI, weak AFM interactions dominate the magnetic beh avior of this compound.