Synthesis, crystal structure and magnetic properties of a new cyanide-bridged two-dimensional CrIII2CoII3 ferromagnet

• The first cyanide-bridged two-dimensional CrIIICoII complex has been synthesized.
• The complex displays typical ferromagnet behaviors with Tc = 15.0 K.

A new cyanide-bridged CrIIICoII heterometallic complex {[Co(L-N5)]3[Cr(CN)6]2}n·nCH3CN·5nH2O (1) has been synthesized by the reaction of [CoII(L-N5)2(H2O)2]·(ClO4)2 with the hexacyanidechromate(III) building block K3[CrIII(CN)6]. X-ray single crystal diffraction analysis shows that complex 1 has a two-dimensional (2D) layer-like structure. Magnetic investigations show that the magnetic coupling between Cr(III) and Co(II) ions through cyanide bridge is ferromagnetic for the complex. The complex displays typical soft ferromagnet behaviors with a three-dimensional ferromagnetic ordering of Tc = 15.0 K, a small coercive field of 10 Oe and a remnant magnetization of about 7.8 Nβ.

A new cyanide-bridged two-dimensional CrIIICoII complex has been synthesized. Magnetic property investigations show that the complex is a typical ferromagnetic with Tc = 15.0 K.Figure optionsDownload as PowerPoint slide