The magnetic susceptibilities at low temperatures of a series of 11 polycrystalline bimetallic coordination compounds of Cr(III) are presented. Materials such as [Cr(H2O)(NH))3][Co(CN)5] are found to behave as simple paramagnets, while [Cr(H2O)(NH3)5](CuCl5) appears to undergo magnetic ordering at 298 mK. A number of other Cr/Cr compounds, such as [Cr(urea)6] [Cr(NCS)6].3H2O, remain paramagnetic to temperatures as low as 40 mK. Exchange interactions are found to be remarkably weak in most of the compounds investigated. The compound [Cr(C5H5NO)6](ClO4)3 also exhibits very weak exchange interactions. © 1983, American Chemical Society. All rights reserved.
|Publication status||Published - 1 Jan 1983|