Ellermann J, Gabold P, Knoch F, Moll M, Pohl D, Sutter J, Bauer W (1996)
Publication Status: Published
Publication Type: Journal article
Publication year: 1996
Publisher: Elsevier
Book Volume: 525
Pages Range: 89-107
Treatment of [Fe-2(CO)(9)] with bis(diphenylphosphino)amine, Ph(2)P-NH-PPh(2), dppa (1) in THF yields [(OC)(4)Fe(mu-dppa)Fe(CO)(4)] (5) and [Fe-2(CO)(6)(mu-CO)(mu-dppa)] . THF (6 . THF). Further reaction of 6 . THF with dppa gives [Fe-2(CO)(4)(mu-CO)(mu-dppa)(2)] . 2 THF (9 . 2 THF) by CO-substitution, whereas P(n-Bu)Ph(2), PPh(3) and PMe(3) add themselves to 6 . THF by forming the linear complexes [(OC)(4)Fe(mu-dppa)Fe(CO)(3)P(n-Bu)Ph(2)] (7a), [(OC)(4)Fe(mu-dppa)Fe(CO)(3)PPh(3)] (7b) and [(OC)(4)Fe(mu-dppa)Fe(CO)(3)PMe(3)] (7c). The reaction of 6 . THF with HPPh(2) or ClPPh(2) results in carbonyl loss and oxidative addition of the phosphorus-hydride, respectively the phosphorus-chloride, to the diiron centre yielding the iron(I) compounds [Fe-2(H)(mu-PPh(2))(CO)(5)(mu-dppa)] . THF (15 . THF) or [Fe-2(mu-Cl)(mu-PPh(2))(CO)(4)(mu-dppa)] . THF (16 . THF). Electrophilic attack of NOBF4 leads to cleavage of the diiron complex 6 . THF into [Fe(CO)(2)(NO)dppa]BF4 (17) and [Fe(CO)(5)] without oxidation of the iron centres. In the solid state, compound 17 forms linear as well as symmetrical bifurcated H-bonds to the BF4- anions. Furthermore, the NH group of 6 . THF can be deprotonated by n-BuLi. Treatment of 6 in its lithiated form with ClPPh(2) yields [Fe-2(mu-PPh(2))(mu-Ph(2)P-N-PPh(2))(CO)(6)] (10) by simultaneous CO loss. The structures of 5, 6 . THF, 7b, 9 . 2 THF, 10, 15 . CHCl3 and 17 were determined by X-ray crystallography. As the X-ray crystallographic studies show, the PNP backbone of the coordinated ligand 1 is conformatively highly flexible. All the compounds were also characterized by H-1 NMR, C-13{H-1} NMR, P-31{H-1} NMR, mass, and IR spectroscopy.
APA:
Ellermann, J., Gabold, P., Knoch, F., Moll, M., Pohl, D., Sutter, J., & Bauer, W. (1996). Chemistry of polyfunctional molecules .122. Complexes and chemical reactivity of bis(diphenylphosphono)amine with diironnonacarbonyl and reactions of [Fe-2(CO)(6)(mu-CO)(mu-Ph(2)P-NH-PPh(2))]center dot THF. Journal of Organometallic Chemistry, 525, 89-107.
MLA:
Ellermann, J., et al. "Chemistry of polyfunctional molecules .122. Complexes and chemical reactivity of bis(diphenylphosphono)amine with diironnonacarbonyl and reactions of [Fe-2(CO)(6)(mu-CO)(mu-Ph(2)P-NH-PPh(2))]center dot THF." Journal of Organometallic Chemistry 525 (1996): 89-107.
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