Dj. Cui et al., First heterobimetallic seven-membered macrocycle complex with a Fe(0) -> Cu(I) donor-acceptor bond, ORGANOMETAL, 20(19), 2001, pp. 4126-4128
A new ligand, 2-(N-diphenylphosphinomethyl-N-cyclohexyl)aminopyridine (NNP)
, was prepared by the Mannich reaction of HPPh2 with 2-(N-cyclohexyl)aminop
yridine and paraformaldehyde. The ligand NNP reacted with Fe(CO)(5) to give
the monometallic complex trans-Fe(CO)(3)(NNP)(2) (2). The reaction of comp
lex 2 with [Cu(CH3CN)(4)](+)[ClO4](-) gave a novel complex 3, [(OC)(3)Fe(mu
-NNP)(2)CU]+ClO4-, which has two seven-membered macrocycles and an Fe(O) -
-> Cu(I) donor-acceptor bond. The molecular structure of complex 3 was dete
rmined by X-ray single-crystal analysis.