Synthesis and characterization of manganese triple-decker complexes

摘要

The use of the highly sterically demanding Cp-BIG ligand (Cp-BIG = C-5(4-nBuC(6)H(4))(5)) and white phosphorus (P-4) enables the synthesis of new P-rich derivatives of the rare P-n ligand complexes of manganese. The obtained complexes, [{(CpMn)-Mn-BIG}(2)(mu,eta(5:5)-P-5)] (2) and [{(CpMn)-Mn-BIG}(2)(mu,eta(2:2)-P-2)(2)] (3), exhibit the highest number of P atoms in this class of manganese compounds identified by X-ray structure analyses. The EPR spectrum of the 29 VE triple-decker complex 2 shows one unpaired electron coupling with two 5/2 spin Mn nuclei.