Formation of Ni[C-4(CN)(8)] from the reaction of Ni(COD)(2) (COD=1,5cyclooctadiene) with TCNE in THF

The dissolution of Ni(COD)(2)(COD = 1,5-cyclooctadiene) into dichloromethane leads to decomposition and formation of a room temperature magnetic material, whereas the reaction of Ni(COD)(2) and tetracyanoethylene (TCNE) in THF forms paramagnetic materials including Ni II[C-4(CN)(8)](THF)2.xTHF. These results are discussed in context with a recent report of a room temperature magnet based upon the reaction of Ni(COD)(2) and TCNE in dichloromethane.