N-methylpyrazinium ion derivatives of an iron (II) dimethylglyoximatoborate complex

作者：Stynes Dennis V^*; Tran Ngoc Doan

来源：Canadian Journal of Chemistry, 2014, 92(8): 781-787.

DOI：10.1139/cjc-2014-0047

• iron dimethylglyoximatoborate
• N-methylpyrazinium ion
• cationic ligand
• tetracyanoethylene

New iron (II) bis(dimethylglyoximatoborate) complexes [Fe(dmgBR(2))(2)(MePz)L](+), R = 4-methoxyphenyl and L = N-methylpyrazinium ion (MePz), tetracyanoethylene (tcne), carbon monoxide, or pyridine are described. The dicationic bis MePz derivative is the first example of a complex containing two small cationic ligands. All adopt the C-2v conformation in solution, which serves to sandwich one axial ligand between 4-methoxyphenyl groups. Charge transfer spectra, conformational dynamics, and electrospray mass spectrometry studies are reported. Equilibrium and rate constants for ligand substitution reactions give a binding order trans to MePz: MePz similar to CO < pyridine, CH3CN.

• 出版日期2014-8