메뉴 건너뛰기




Volumn 44, Issue 6, 2005, Pages 1794-1809

Combined spectroscopic/computational study of binuclear Fe(I)-Fe(I) complexes: Implications for the fully-reduced active-site cluster of Fe-only hydrogenases

Author keywords

[No Author keywords available]

Indexed keywords

1,3 PROPANE DITHIOLATE; DIMER; DITHIOL DERIVATIVE; HYDROGENASE; IRON COMPLEX; UNCLASSIFIED DRUG;

EID: 15944389809     PISSN: 00201669     EISSN: None     Source Type: Journal    
DOI: 10.1021/ic048739n     Document Type: Article
Times cited : (42)

References (110)
  • 34
    • 3042850004 scopus 로고    scopus 로고
    • Our previous studies involving TD-DFT are described in the following references: (a) Brooks, A. J.; Vlasie, M.; Banerjee, R.; Brunold, T. C. J. Am. Chem. Soc. 2004, 126, 8167-8180. (b) Stich, T. A.; Brooks, A. J.; Buan, N. R.; Brunold, T. C. J. Am. Chem. Soc. 2003, 125, 5897-5914. (c) Stich, T. A.; Buan, N. R.; Brunold, T. C. J. Am. Chem. Soc. 2004, 126, 9735-9749. (d) Craft, J. L.; Horng, Y. C.; Ragsdale, S. W.; Brunold, T. C. J. Am. Chem. Soc. 2004, 126, 4068-4069. (e) Craft, J. L.; Horng, Y. C.; Ragsdale, S. W.; Brunold, T. C. J. Biol. Inorg. Chem. 2004, 9, 77-89.
    • (2004) J. Am. Chem. Soc. , vol.126 , pp. 8167-8180
    • Brooks, A.J.1    Vlasie, M.2    Banerjee, R.3    Brunold, T.C.4
  • 35
    • 0038295926 scopus 로고    scopus 로고
    • Our previous studies involving TD-DFT are described in the following references: (a) Brooks, A. J.; Vlasie, M.; Banerjee, R.; Brunold, T. C. J. Am. Chem. Soc. 2004, 126, 8167-8180. (b) Stich, T. A.; Brooks, A. J.; Buan, N. R.; Brunold, T. C. J. Am. Chem. Soc. 2003, 125, 5897-5914. (c) Stich, T. A.; Buan, N. R.; Brunold, T. C. J. Am. Chem. Soc. 2004, 126, 9735-9749. (d) Craft, J. L.; Horng, Y. C.; Ragsdale, S. W.; Brunold, T. C. J. Am. Chem. Soc. 2004, 126, 4068-4069. (e) Craft, J. L.; Horng, Y. C.; Ragsdale, S. W.; Brunold, T. C. J. Biol. Inorg. Chem. 2004, 9, 77-89.
    • (2003) J. Am. Chem. Soc. , vol.125 , pp. 5897-5914
    • Stich, T.A.1    Brooks, A.J.2    Buan, N.R.3    Brunold, T.C.4
  • 36
    • 3543116192 scopus 로고    scopus 로고
    • Our previous studies involving TD-DFT are described in the following references: (a) Brooks, A. J.; Vlasie, M.; Banerjee, R.; Brunold, T. C. J. Am. Chem. Soc. 2004, 126, 8167-8180. (b) Stich, T. A.; Brooks, A. J.; Buan, N. R.; Brunold, T. C. J. Am. Chem. Soc. 2003, 125, 5897-5914. (c) Stich, T. A.; Buan, N. R.; Brunold, T. C. J. Am. Chem. Soc. 2004, 126, 9735-9749. (d) Craft, J. L.; Horng, Y. C.; Ragsdale, S. W.; Brunold, T. C. J. Am. Chem. Soc. 2004, 126, 4068-4069. (e) Craft, J. L.; Horng, Y. C.; Ragsdale, S. W.; Brunold, T. C. J. Biol. Inorg. Chem. 2004, 9, 77-89.
    • (2004) J. Am. Chem. Soc. , vol.126 , pp. 9735-9749
    • Stich, T.A.1    Buan, N.R.2    Brunold, T.C.3
  • 37
    • 1842450597 scopus 로고    scopus 로고
    • Our previous studies involving TD-DFT are described in the following references: (a) Brooks, A. J.; Vlasie, M.; Banerjee, R.; Brunold, T. C. J. Am. Chem. Soc. 2004, 126, 8167-8180. (b) Stich, T. A.; Brooks, A. J.; Buan, N. R.; Brunold, T. C. J. Am. Chem. Soc. 2003, 125, 5897-5914. (c) Stich, T. A.; Buan, N. R.; Brunold, T. C. J. Am. Chem. Soc. 2004, 126, 9735-9749. (d) Craft, J. L.; Horng, Y. C.; Ragsdale, S. W.; Brunold, T. C. J. Am. Chem. Soc. 2004, 126, 4068-4069. (e) Craft, J. L.; Horng, Y. C.; Ragsdale, S. W.; Brunold, T. C. J. Biol. Inorg. Chem. 2004, 9, 77-89.
    • (2004) J. Am. Chem. Soc. , vol.126 , pp. 4068-4069
    • Craft, J.L.1    Horng, Y.C.2    Ragsdale, S.W.3    Brunold, T.C.4
  • 38
    • 0842333899 scopus 로고    scopus 로고
    • Our previous studies involving TD-DFT are described in the following references: (a) Brooks, A. J.; Vlasie, M.; Banerjee, R.; Brunold, T. C. J. Am. Chem. Soc. 2004, 126, 8167-8180. (b) Stich, T. A.; Brooks, A. J.; Buan, N. R.; Brunold, T. C. J. Am. Chem. Soc. 2003, 125, 5897-5914. (c) Stich, T. A.; Buan, N. R.; Brunold, T. C. J. Am. Chem. Soc. 2004, 126, 9735-9749. (d) Craft, J. L.; Horng, Y. C.; Ragsdale, S. W.; Brunold, T. C. J. Am. Chem. Soc. 2004, 126, 4068-4069. (e) Craft, J. L.; Horng, Y. C.; Ragsdale, S. W.; Brunold, T. C. J. Biol. Inorg. Chem. 2004, 9, 77-89.
    • (2004) J. Biol. Inorg. Chem. , vol.9 , pp. 77-89
    • Craft, J.L.1    Horng, Y.C.2    Ragsdale, S.W.3    Brunold, T.C.4
  • 39
    • 0742269843 scopus 로고    scopus 로고
    • For examples of TD-DFT applied to polynuclear transition-metal clusters, see the following references: (a) Ebihara, M.; Iiba, M.; Higashi, S.; Tsuzuki, N.; Kawamura, T.; Morioka, T.; Ozawa, S.; Yamabe, T.; Masuda, H. Polyhedron 2003, 22, 3413-3422. (b) Wu, D. Y.; Hayashi, M.; Chang, C. H.; Liang, K. K.; Lin, S. H. J. Chem. Phys. 2003, 118, 4073-4085. (c) Bakker, M. J.; Vergeer, F. W.; Hartl, F.; Rosa, P.; Ricard, L.; Le Floch, P.; Calhorda, M. J. Chem. - Eur. J. 2002, 8, 1741-1752.
    • (2003) Polyhedron , vol.22 , pp. 3413-3422
    • Ebihara, M.1    Iiba, M.2    Higashi, S.3    Tsuzuki, N.4    Kawamura, T.5    Morioka, T.6    Ozawa, S.7    Yamabe, T.8    Masuda, H.9
  • 40
    • 0037336917 scopus 로고    scopus 로고
    • For examples of TD-DFT applied to polynuclear transition-metal clusters, see the following references: (a) Ebihara, M.; Iiba, M.; Higashi, S.; Tsuzuki, N.; Kawamura, T.; Morioka, T.; Ozawa, S.; Yamabe, T.; Masuda, H. Polyhedron 2003, 22, 3413-3422. (b) Wu, D. Y.; Hayashi, M.; Chang, C. H.; Liang, K. K.; Lin, S. H. J. Chem. Phys. 2003, 118, 4073-4085. (c) Bakker, M. J.; Vergeer, F. W.; Hartl, F.; Rosa, P.; Ricard, L.; Le Floch, P.; Calhorda, M. J. Chem. - Eur. J. 2002, 8, 1741-1752.
    • (2003) J. Chem. Phys. , vol.118 , pp. 4073-4085
    • Wu, D.Y.1    Hayashi, M.2    Chang, C.H.3    Liang, K.K.4    Lin, S.H.5
  • 41
    • 0037006829 scopus 로고    scopus 로고
    • For examples of TD-DFT applied to polynuclear transition-metal clusters, see the following references: (a) Ebihara, M.; Iiba, M.; Higashi, S.; Tsuzuki, N.; Kawamura, T.; Morioka, T.; Ozawa, S.; Yamabe, T.; Masuda, H. Polyhedron 2003, 22, 3413-3422. (b) Wu, D. Y.; Hayashi, M.; Chang, C. H.; Liang, K. K.; Lin, S. H. J. Chem. Phys. 2003, 118, 4073-4085. (c) Bakker, M. J.; Vergeer, F. W.; Hartl, F.; Rosa, P.; Ricard, L.; Le Floch, P.; Calhorda, M. J. Chem. - Eur. J. 2002, 8, 1741-1752.
    • (2002) Chem. - Eur. J. , vol.8 , pp. 1741-1752
    • Bakker, M.J.1    Vergeer, F.W.2    Hartl, F.3    Rosa, P.4    Ricard, L.5    Le Floch, P.6    Calhorda, M.J.7
  • 55
    • 15944415174 scopus 로고    scopus 로고
    • Unpublished results
    • Ahlrichs, R. Unpublished results.
    • Ahlrichs, R.1
  • 69
    • 33847800977 scopus 로고
    • 6 to transitions involving the Fe(I)-Fe(I) unit but does not provide specific transition assignments: Teo, B. K.; Hall, M. B.; Fenske, R. F.; Dahl, L. F. Inorg. Chem. 1975, 14, 3103-3117.
    • (1975) Inorg. Chem. , vol.14 , pp. 3103-3117
    • Teo, B.K.1    Hall, M.B.2    Fenske, R.F.3    Dahl, L.F.4
  • 71
    • 15944413909 scopus 로고    scopus 로고
    • note
    • -1. See Supporting Information for more details.
  • 74
    • 15944402899 scopus 로고    scopus 로고
    • note
    • -1 mode of 2 is substantially broadened and often appears on the slope associated with the Rayleigh scattering peak. Therefore, it was not possible to obtain a high-quality rR profile for this mode.
  • 75
    • 15944424020 scopus 로고    scopus 로고
    • note
    • The following approximations were also made for 2: (i) the elimination of the propane linkage in the pdt ligand, (ii) the modeling of CO ligands as single atoms, (iii) the inclusion of a small S⋯S interaction force constant, and (iv) the use of a single force constant for inequivalent internal coordinates involving the same set of atoms.
  • 76
    • 15944428668 scopus 로고    scopus 로고
    • note
    • Because of the symmetry inequivalence of all four Fe-S bonds in 2, the corresponding force constants are expected to show some variation. Consequently, when carrying out a NCA for 2, it is impossible to separate the role of interaction force constants from the differences in Fe-S force constants on the calculated frequencies of the ν(Fe-S) modes. As reasonable frequencies for these modes were calculated using a single set of Fe-S force constants and without inclusion of interaction force constants, these approximations should have only minor impact on the quality of the final force field. Nevertheless, the Fe-S stretching force constants determined for 2 are subject to somewhat greater uncertainties than those obtained for 1.
  • 80
    • 15944372711 scopus 로고    scopus 로고
    • note
    • As the same Fe-C-N and C-N force constants were used for both CN ligands and the δ(Fe-C-N) and ν(C-N) modes are largely uncoupled to the motions of the Fe-S core, the calculated frequencies for these two modes are nearly identical for the axial and basal CN ligands. Conversely, the axial and basal ν(Fe-CN) modes have distinct frequencies due to different degrees of vibrational coupling with the Fe-S stretching motions (Table 4).
  • 84
    • 0033546683 scopus 로고    scopus 로고
    • 2+, for which an Fe-C force constant of 1.673 mdyn/Å was determined. It appears that the large positive charge of this complex, which is distributed over a relatively small number of atoms, significantly reduces the strength of the Fe-COπ-backbonding interaction, leading to weaker Fe-C bonds. See the following reference: Bernhardt, E.; Bley, B.; Wartchow, R.; Willner, H.; Bill, E.; Kuhn, P.; Sham, I. H. T.; Bodenbinder, M.; Bröchler, R.; Aubke, F. J. Am. Chem. Soc. 1999, 121, 7188-7200.
    • (1999) J. Am. Chem. Soc. , vol.121 , pp. 7188-7200
    • Bernhardt, E.1    Bley, B.2    Wartchow, R.3    Willner, H.4    Bill, E.5    Kuhn, P.6    Sham, I.H.T.7    Bodenbinder, M.8    Bröchler, R.9    Aubke, F.10
  • 93
    • 15944419609 scopus 로고    scopus 로고
    • note
    • Given the experimental uncertainties inherent to both the rR profiles and the excited-state parameters extracted from the absorption spectra, the values determined for 1 are estimated to be accurate within ±0.2 units.
  • 95
    • 15944410030 scopus 로고    scopus 로고
    • note
    • k,3, the distortions in the second and third excited states are identical.
  • 96
    • 15944383490 scopus 로고    scopus 로고
    • note
    • The donor orbital for transition i is also Fe-Fe antibonding, but in a π fashion. As σ interactions are generally much stronger than π interactions, it is expected that this transition results in a net weakening of the Fe-Fe bond.
  • 101
    • 15944419019 scopus 로고    scopus 로고
    • note
    • -1.
  • 102
    • 15944374002 scopus 로고    scopus 로고
    • note
    • Cys bond distance was fixed at 2.35 Å, which is compatible with the distance of 2.38 Å found crystallographically.
  • 105
    • 15944410373 scopus 로고    scopus 로고
    • note
    • Geometry optimizations were also performed using the pdt ligand. The resulting structures were very similar to those obtained with a neutral dta ligand.
  • 107
    • 15944399502 scopus 로고    scopus 로고
    • note
    • b conformation.
  • 110
    • 15944366275 scopus 로고    scopus 로고
    • note
    • -1.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.