Tae-Jeong Kim, Soonchul Kwon, Yong-Hoon Kim
Apr 10, 1992
Citations
0
Influential Citations
21
Citations
Journal
Journal of Organometallic Chemistry
Abstract
Reactions of 1,1′-bis(diphenylphosphino)ferrocene (BPPF) with Fe2(CO)9 and Fe3(CO)12 produced a series of iron carbonyl derivatives: (η2-BPPF)Fe(CO)3 (1), (η2-BPPF)Fe(CO)4 (2), (μ,η2BPPF)(Fe(CO)4)2 (3), (η2-BPPF)Fe2(CO)7 (4), and (μ,η2BPPF)Fe3(CO)10 (5). The synthesis and characterization of 4 and 5 including X-ray crystal structures of 2, 3, and 5 confirmed various coordination modes of BPPF. Crystal data are as follows: (η1-BPPF)Fe(CO)4 (2): orthorhombic, space group Pbca, a = 26.27(1), b = 23.18(1), c = 10.938(8) A, V = 6661(7) A3, Z = 8; 3017 data with I > 3.0σ(I were refined to R = 0.057, Rw = 0.056; (μ,η2-BPPF)Fe3(CO)10 (5): monoclinic, space group P21 / n, a = 11.231(1) b = 21.043(4), c = 20.373(9) A, β = 97.373(9)° V = 4693(4) A3 V, Z = 4; 6082 data with I > 3.0σ(I) were refined to R = 0.054, Rw = 0.071; (μ,η2-BPPF)Fe2(CO)8 (3): monoclinic, space group C2/ c, a = 17.223(7), b = 14.97(2), c = 18.558(3) A, β = 108.39(3)°, V = 4541(6) A3, Z = 4; 3201 data with I > 3.0σ(I) were refined to R = 0.070, Rw = 0.139, as a result of difficulties with modeling electron density peaks associated with highly disordered solvent atoms.