1425045-06-2Relevant academic research and scientific papers
Low oxidation state iron(0), iron(I), and ruthenium(0) dinitrogen complexes with a very bulky neutral phosphine ligand
Gilbert-Wilson, Ryan,Field, Leslie D.,Colbran, Stephen B.,Bhadbhade, Mohan M.
, p. 3043 - 3053 (2013/04/24)
The synthesis of a series of iron and ruthenium complexes with the ligand P2P3Cy, P(CH2CH2PCy 2)3 is described. The iron(0) and ruthenium(0) complexes Fe(N2)(P2P3Cy) (1) and Ru(N 2)(P2P3Cy) (2) were synthesized by treatment of [FeCl(P2P3Cy)]+ and [RuCl(P2P3Cy)]+ with an excess of potassium graphite under a nitrogen atmosphere. The Fe(I) and Ru(I) species [Fe(N2)(P2P3Cy)]+ (3) and RuCl(P2P3Cy) (4) were synthesized by treatment of [FeCl(P2P3Cy)]+ and [RuCl(P 2P3Cy)]+ with 1 equiv of potassium graphite under a nitrogen atmosphere. The cationic dinitrogen species [Fe(N 2)H(P2P3Cy)]+ (6) and [Ru(N2)H(P2P3Cy)]+ (7) were formed by treatment of 1 and 3, respectively, with 1 equiv of a weak organic acid. The iron(II) complex Fe(H)2(P2P 3Cy) (5) was also synthesized and characterized. Complexes [RuCl(P2P3Cy)][BPh4], 1, 2, 3[BPh4], 4, 5, 6[BF4], and 7[BF4] were characterized by X-ray crystallography. The Fe(I) and Ru(I) complexes 3 and 4 were characterized by electron paramagnetic resonance (EPR) spectroscopy, and the Fe(I) complex has an EPR spectrum typical of a metal-centered radical.
