Abstract
Reaction of the diiron propanedithiolate complex [μ-(SCH2)2CHC6H5]Fe2(CO)6 (A) with 1,1′-bis(diphenylphosphino)ferrocene (dppf) in refluxing xylene yielded an intramolecular bridged complex [(μ-SCH2)2CHC6H5]Fe2(CO)4(μ-dppf) (1), while in MeCN in the presence of Me3NO·2H2O gave an intermolecular bridged complex [(μ-SCH2)2CHC6H5Fe2(CO)5]2(μ,κ1,κ1-dppf) (2). The structures of both complexes were fully characterized by spectroscopic methods and X-ray crystallography. In the solid state, the diphosphine spans the iron–iron vector, adopting cis basal–basal arrangement as expected in intramolecular bridged complex 1, while the diphosphine connects the two [2Fe2S] clusters by coordinating one of the two Fe atoms of each [2Fe2S] cluster in intermolecular bridged complex 2. The Fe–Fe bond length of 2.63 Å in 1 is longer than that in 2, among the longest of Fe–Fe bonds in the synthetic active sites of Fe–Fe hydrogenases. Electrochemical investigation showed that complex 1 catalyzed the reduction of protons to give dihydrogen in the presence of HBF4, but did not catalyze the oxidation of dihydrogen in the presence of pyridine.
Similar content being viewed by others
References
Georgakaki IP, Thomson LM, Lyon EJ, Hall MB, Darensbourg MY (2003) Coord Chem Rev 238–239:255
Gloaguen F, Rauchfuss TB (2009) Chem Soc Rev 38:100
Tard C, Pickett CJ (2009) Chem Rev 109:2245
Peters JW, Lanzilotta WN, Lemon BJ (1998) Science 282:1853
Nicolet Y, Piras C, Legrand P, Hatchikian CE, Fontecilla-Camps JC (1999) Structure 7:13
Vignais PM, Billoud B (2007) Chem Rev 107:4206
Wang WG, Rauchfuss TB, Zhu LY (2014) J Am Chem Soc 136:5773
Manor BC, Rauchfuss TB (2013) J Am Chem Soc 135:11895
Fontecilla-Camps JC, Volbeda A, Cavazza C, Nicolet Y (2007) Chem Rev 107:4273
Felton GAN, Mebi CA, Petro BJ, Vannucci AK, Evans DH, Glass RS, Lichtenberger DL (2009) J Organomet Chem 694:2681
Wang N, Wang M, Chen L, Sun LC (2013) Dalton Trans 42:12059
Ghosh S, Hogarth G, Hollingsworth N, Holt KB, Kabirc SE, Sanchez BE (2014) Chem Commun 50:945
Li CG, Zhu Y, Jiao XX, Fu XQ (2014) Polyhedron 67:416
Dolomanov OV, Bourhis LJ, Gildea RJ, Howard JAK, Puschmann H (2009) J Appl Cryst 42:339
Sheldrick GM (2008) Acta Cryst A64:112
Song LC, Li CG, Ge JH, Yang ZY, Wang HT, Zhang J, Hu QM (2008) J Inorg Biochem 102:1973
Adam FI, Hogarth G, Kabir SE, Richards I (2008) C R Chimie 11:890
Gao WM, Ekström J, Liu JH, Chen CN, Eriksson L, Weng LH, Åkermark B, Sun LC (2007) Inorg Chem 46:1981
Liu XF (2014) J Organomet Chem 750:117
Liu XF, Yin BS (2010) J Coord Chem 63:4061
Adam FI, Hogarth G, Richards I (2007) J Organomet Chem 692:3957
Li CG, Xue F, Cui MJ, Shang JY (2014) J Clust Sci. doi:10.1007/s10876-014-0763-8
Song LC, Yang ZY, Bian HZ, Hu QM (2004) Organometallics 23:3082
Song LC, Yang ZY, Bian HZ, Liu Y, Wang HT, Liu XF, Hu QM (2005) Organometallics 24:6126
Li P, Wang M, He CJ, Li GH, Liu XY, Chen CN, Åkermark B, Sun LC (2005) Eur J Inorg Chem 2506
Wang N, Wang M, Liu J, Jin K, Chen L, Sun LC (2009) Inorg Chem 48:11551
Chong D, Georgakaki IP, Mejia-Rodriguez R, Sanabria-Chinchilla J, Soriaga MP, Darensbourg MY (2003) Dalton Trans 4158
Borg SJ, Behrsing T, Best SP, Razavet M, Liu X, Pickett CJ (2004) J Am Chem Soc 126:16988
Gloaguen F, Lawrence JD, Rauchfuss TB (2001) J Am Chem Soc 123:9476
Felton GAN, Glass RS, Lichtenberger DL, Evans DH (2006) Inorg Chem 45:9181
Acknowledgments
This work is supported by the Chinese National Natural Science Foundation under Grant [No. 21072046]; the Chinese National Training Programs of Innovation and Entrepreneurship for Undergraduates under Grant (No. 201210467022).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Li, CG., Xue, F., Cui, MJ. et al. 1,1′-bis(diphenylphosphino)ferrocene as an intramolecular or intermolecular bridging ligand related to the phenyl-functionalized diiron propanedithiolate complex: synthesis and catalysis of the reduction of protons. Transition Met Chem 40, 47–52 (2015). https://doi.org/10.1007/s11243-014-9888-8
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11243-014-9888-8