Synthesis, Structure, and Electrochemical Properties of OO ‐Alkyldithiophosphato Nickel Complexes with Chelating Aminodiphosphine Ligands

摘要

> Eight new O ‐alkyldithiophosphato nickel complexes 1 – 8 with chelating aminodiphosphine ligands have been successfully synthesized in moderate yields by the treatment of O , O′ ‐alkydithiophosphoric acid salts (R 1 O) ₂ P{S}SH · Et ₂ NH (R 1 = CH ₃ , CH ₂ CH ₃ ) with nickel aminodiphosphine precursors Ni[(Ph ₂ P) ₂ NR 2 ]Cl ₂ [R 2 = (CH ₂ ) ₃ OCH ₃ , (CH ₂ ) ₃ SCH ₃ , (CH ₂ ) ₂ CH(CH ₃ ) ₂ , CH(CH ₃ )C ₆ H ₅ ] in the presence of Et ₃ N at room temperature. Meanwhile, reactions of Ni(S ₂ P{OR 1 } ₂ ) ₂ and aminodiphosphine ligands (Ph ₂ P) ₂ NR 2 in CHCl ₃ solvents at room temperature also resulted in the formation of the target complexes 1 – 8 in satisfactory yields. The two synthetic routes are found to be efficient pathways to prepare O