Synthesis And Structural Characterization Of Metal Organic Complexes Diazaphospholide Ligands

Five-membered 1,2,4-diazaphospholide complexes have recently attracted great interest. Complexes with 1,2,4-diazaphospholide ligands are potential in organic synthesis, catalysis, and new materials. This paper describes the synthesis of1,2,4-diazaphospholide sandwich ferric complexes and a few of2,6-（bis-1,2,4-diazaphosphol-1-yl）pyridine nickel（II）, cobalt（II）, and iron（II） complexes. All complexes were characterized by melting point determination, nuclear magnetic resonance（NMR）, and X-Ray single crystal diffraction analysis.1. The reaction of potassium 3,5-di-tert-butyl-1,2,4-diazaphospholide and potassium 3,5-di-phenyl-1,2,4-diazaphospholide with Cp*Li, and iron dichloride in a ratio of 1:1:1 gave complexes[Cp*Fe（3,5-t Bu₂dp）] and [Cp*Fe（3,5-Ph2dp）], respectively.2. The reaction of 2,6-bis（1,2,4-diazaphosphol-1-yl）pyridine and Fe（BF₄）₂?6H₂O, Co（BF₄）₂?6H₂O, and Ni（BF₄）₂?6H₂O in a ratio of 2:1 gave complexes {[（2,6-dp₂）py]₂Fe}²⁺（BF₄）₂^–, {[（2,6-dp₂）py]₂Co}²⁺（BF₄）₂^–,{[（2,6-dp₂）py]2Ni}²⁺（BF₄）₂^–, respectively.