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Volumn 128, Issue 30, 2006, Pages 9825-9833

X-ray absorption spectroscopy and density functional theory studies of [(H3buea)FeIII-X]n- (X = S2-, O 2-, OH-): Comparison of bonding and hydrogen bonding in oxo and sulfido complexes

Author keywords

[No Author keywords available]

Indexed keywords

CORRELATION METHODS; ELECTRONIC STRUCTURE; IRON COMPOUNDS; OXYGEN; PROBABILITY DENSITY FUNCTION; X RAY SPECTROSCOPY;

EID: 84962406568     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja061618x     Document Type: Article
Times cited : (44)

References (78)
  • 43
    • 84962455158 scopus 로고    scopus 로고
    • G. N. George, Stanford Synchrotron Radiation Laboratory, Stanford Linear Accelerator Center, Stanford University, Stanford, CA., 2001
    • EDG_FIT: G. N. George, Stanford Synchrotron Radiation Laboratory, Stanford Linear Accelerator Center, Stanford University, Stanford, CA., 2001.
  • 53
    • 15744375697 scopus 로고    scopus 로고
    • Gaussian. Inc.: Wallingford, CT. (Full reference in Supporting Information)
    • Pople, J. A. et al. Gaussian 03, Revision C.02; Gaussian. Inc.: Wallingford, CT, 2004. (Full reference in Supporting Information.)
    • (2004) Gaussian 03, Revision C.02
    • Pople, J.A.1
  • 56
    • 84962336026 scopus 로고    scopus 로고
    • note
    • 2- compound is the smallest of the three, it is also broader.
  • 58
    • 11344278017 scopus 로고    scopus 로고
    • (Rohde et al. J. Am. Chem. Soc. 2004, 126, 16750-16761). However, these species are Fe(IV) and Fe(V) and thus have more holes in the d manifold.
    • (2004) J. Am. Chem. Soc. , vol.126 , pp. 16750-16761
    • Rohde1
  • 60
    • 84962336012 scopus 로고    scopus 로고
    • note
    • Note that even though the calculations underestimate the 4p mixing, they reproduce the intensity distribution of the pre-edge feature (vide infra).
  • 61
    • 84962336008 scopus 로고    scopus 로고
    • note
    • Note that the force constant for Fe-O is expected to be higher than that of Fe-S by a factor of 1.44 due to higher mass of S (32) relative to O (16). However, here the ratio is 1.9 which indicates that the Fe-O bond is stronger than the Fe-S bond.
  • 62
    • 84962471832 scopus 로고    scopus 로고
    • note
    • a's of these dianaionic ligands in addition to entropy effects. The ΔE's provide relative binding energy estimates due to differences in bonding.
  • 63
    • 84962437692 scopus 로고    scopus 로고
    • note
    • Note that there will be some contribution to the differences in Fe-O and Fe-S bonding energy from the differences of binding energy of the tridentate ligand between the Fe-O and the Fe-S complexes.
  • 64
    • 84962437691 scopus 로고    scopus 로고
    • note
    • III-O complex is derived from shorter O-H distances and higher charge density on oxo relative to sulfido in the Fe-X complexes (Table 4).
  • 65
    • 84962437687 scopus 로고    scopus 로고
    • note
    • 3buea chelate in lowering energy required for H-bonding.
  • 66
    • 84962342586 scopus 로고    scopus 로고
    • note
    • 2O complex (solvent corrected).
  • 67
    • 84962412505 scopus 로고    scopus 로고
    • note
    • 2 solvent.
  • 68
    • 84962437682 scopus 로고    scopus 로고
    • note
    • 3p character in those orbitals due to higher covalency of the Fe-S bond.
  • 70
    • 84962342569 scopus 로고    scopus 로고
    • note
    • IV-O.
  • 71
    • 84962417432 scopus 로고    scopus 로고
    • note
    • Ionic interaction energy is estimated by treating the Fe, S, and O as point charges separated by their internuclear distances and the magnitude of the charges were derived from the NPA calculations.
  • 72
    • 84962424754 scopus 로고    scopus 로고
    • note
    • 2O molecule.
  • 78
    • 84962417440 scopus 로고    scopus 로고
    • note
    • IV-O unit may be overestimated by additional Coulombic interaction.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.