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Volumn 127, Issue 34, 2005, Pages 11969-11978

Geometric and electronic structure of the heme-peroxo-copper complex [(F8TPP)FeIII-(O22-)-Cu II(TMPA)](ClO4)

Author keywords

[No Author keywords available]

Indexed keywords

ANTIFERROMAGNETISM; BAND STRUCTURE; ELECTRONIC STRUCTURE;

EID: 24144453140     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja043374r     Document Type: Article
Times cited : (31)

References (78)
  • 44
    • 33645594705 scopus 로고    scopus 로고
    • Karlin, K. D., and co-workers, unpublished results
    • Karlin, K. D., and co-workers, unpublished results.
  • 48
    • 0003795626 scopus 로고    scopus 로고
    • Stanford Synchrotron Radiation Laboratory, Stanford Linear Accelerator Center, Stanford University: Stanford, CA
    • George, G. N. EXAFSPAK; Stanford Synchrotron Radiation Laboratory, Stanford Linear Accelerator Center, Stanford University: Stanford, CA, 2000.
    • (2000) EXAFSPAK
    • George, G.N.1
  • 60
    • 33645600913 scopus 로고    scopus 로고
    • note
    • The phase and amplitude envelope of an EXAFS single scattering (SS) contribution is nearly identical and indistinguishable by the fitting routines for scatterers with atomic number Z and Z ± 1 located at the same distance from the absorber. Fe-O/N refers to a SS contribution from either O or N; however, the theoretical phase and amplitude parameters were calculated for an Fe-O path.
  • 63
    • 33645601345 scopus 로고    scopus 로고
    • note
    • The Cu⋯Fe SS and MS paths are strongly correlated. The disorder in the MS path in solution is larger than that in the solid. This, in addition to the higher noise level in the solution data, increases the error bar on the metal-metal distance determination.
  • 65
    • 33645599414 scopus 로고    scopus 로고
    • note
    • + with the Fe⋯Cu constrained at different values between 3.6 and 4.15 Å was calculated using the Jaguar program at the BP86 level of theory, resulting in an energy difference between the fully optimized structure and that with an Fe⋯Cu distance constrained at 3.7 Å of 7.1 kcal/mol. Details of these calculations are given in Supporting Information.
  • 66
    • 33645605236 scopus 로고    scopus 로고
    • note
    • Coupling constants calculated with pure DFT methods are normally 2-3 times larger than the experimental values.
  • 67
    • 33645587371 scopus 로고    scopus 로고
    • note
    • 2-Cu plane.
  • 68
    • 33645583950 scopus 로고    scopus 로고
    • note
    • For this bonding description, the porphyrin is defined as the xy plane, with the z axis perpendicular to this plane and the z axis along the O-O vector.
  • 69
    • 33645586302 scopus 로고    scopus 로고
    • note
    • + to provide a better basis for comparison. Details are given in Supporting Information.
  • 70
    • 33645608167 scopus 로고    scopus 로고
    • note
    • In the broken symmetry description (S = 0), each spin-up orbital is energetically degenerate with a spin-down electron on the opposite site of the molecule. Such spin-up and spin-down electrons are images of one another under inversion.
  • 73
    • 33645586171 scopus 로고    scopus 로고
    • note
    • - model complex was also optimized using a larger basis set containing diffuse functions. In particular, the basis set 6-311+G* was used for Fe and O, and the basis set 6-31+G* was used for N, C, and H. The results are very similar to those presented here.
  • 77
    • 33645592656 scopus 로고    scopus 로고
    • note
    • 36 The reported Fe⋯Cu of 3.4 Å has been reevaluated in this study, and the EXAFS data are fit with an Fe⋯Cu and Cu⋯Fe component of ∼3.97 Å. This difference is likely due to differences in sample preparation, as the EXAFS data in L6 are clearly different from those reported herein.
  • 78
    • 33645592396 scopus 로고    scopus 로고
    • note
    • Some contribution to the σ superexchange pathway is also present in β-193.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.