Synthesis and structure of hydrido bis(ethylene) and hydrido dinitrogen complexes of rhenium(I) having dimethylphenylphosphine ligands

Article abstract of DOI:10.1021/om00055a024

mer-Hydridobis(ethylene)tris(dimethylphenylphosphine)rhenium(I) (1) and cis-hydrido(dinitrogen)-tetrakis(dimethylphenylphosphine)rhenium(I) (2) have been prepared by the reaction of mer-trichloro-tris(dimethylphenylphosphine)rhenium(I) with ethyllithium and n-propyllithium, respectively. X-ray structure analysis reveals that which complexes are octahedral, and in the former complex the two coordinated ethylenes occupy sites perpendicular to each other in cis positions and in the latter complex hydrido and dinitrogen ligands in cis positions. The coordinated ethylene and dinitrogen can be smoothly displaed by dihydrogen to give known trihydrido- or pentahydridorhenium complexes. Crystal data for 1: space group P1, Z = 2, a = 9.285 (3) ?, b = 19.229 (5) ?, c = 9.044 (3) ?, α = 93.47 (3)°, β = 120.16 (2)°, γ = 90.23 (3)°, V = 1392.5 (8) ?³, R = 0.0653, R_w = 0.0641, based on 3959 reflections with F > 3σ(F). Crystal data for 2: space group P2₁/a, Z = 4, a = 27.49 (1) ?, b = 10.113 (2) ?, c = 12.235 (6) ?, β = 91.94 (4)°, V = 3424 (2) ?³, R = 0.0464, R_w = 0.0533, based on 4129 reflections with F > 3σ(F).