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Volumn 23, Issue 4, 2004, Pages 635-646

Thermally reversible photochemical haptotropic rearrangement of diiron carbonyl complexes bearing a bridging acenaphthylene or aceanthrylene ligand

Author keywords

[No Author keywords available]

Indexed keywords

CALCULATIONS; COMPLEXATION; HEAT TREATMENT; ISOMERIZATION; ISOMERS; LIGHT ABSORPTION; MOLECULAR STRUCTURE; PHOTOCHEMICAL REACTIONS; THERMODYNAMIC STABILITY;

EID: 1442334149     PISSN: 02767333     EISSN: None     Source Type: Journal    
DOI: 10.1021/om034117i     Document Type: Article
Times cited : (20)

References (65)
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    • (d) Irie, M. Chem. Rev. 2000, 100, 1685.
    • (2000) Chem. Rev. , vol.100 , pp. 1685
    • Irie, M.1
  • 11
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    • Wilkinson, G., Stone, F. G. A., Abel, E. W., Eds.; Pergamon: Oxford; Chapter 20
    • (a) Mann, B. E. In Comprehensive Organometallic Chemistry; Wilkinson, G., Stone, F. G. A., Abel, E. W., Eds.; Pergamon: Oxford, 1982; Vol. 3, Chapter 20.
    • (1982) Comprehensive Organometallic Chemistry , vol.3
    • Mann, B.E.1
  • 14
    • 33847088382 scopus 로고
    • Representative examples for the haptotropic rearrangement of mononuclear transition metal complexes: (a) Treichel, P. M.; Johnson, J. W. Inorg. Chem. 1977, 16, 749.
    • (1977) Inorg. Chem. , vol.16 , pp. 749
    • Treichel, P.M.1    Johnson, J.W.2
  • 33
    • 0008490245 scopus 로고
    • 8 For an example of the thermal haptotropic rearrangement on dinuclear complex: Cotton, F. A.; Marks, T. J. J. Organomet. Chem. 1969, 19, 237.
    • (1969) J. Organomet. Chem. , vol.19 , pp. 237
    • Cotton, F.A.1    Marks, T.J.2
  • 46
    • 1442311976 scopus 로고    scopus 로고
    • note
    • 1H NMR spectra of 2-A, five signals were seen at -60°C. When the solution was warmed, three of them were broadened and disappeared. At 50°C two sharp and one broad peak were observed in a ratio of 1:1:3. Only three signals were visible in a ratio of 1:3:1 from -80°C to room temperature in the spectra of 2-B. All of these results suggested that the CO exchange processes of 1-B or 2-B were much faster than those of 1-A or 2-A. Details are described in the Supporting in the Supporting Information.
  • 47
    • 1442287405 scopus 로고    scopus 로고
    • note
    • 298 = 2 ± 5 cal/mol·deg for the reaction 1-B to 1-A, which are in agreement with those obtained by the first-order kinetics shown in the text. Details are reported in the Supporting Information.
  • 49
    • 1442336411 scopus 로고    scopus 로고
    • note
    • 6b We carried out the rearrangement between 1-A and 1-B in the presence of aceanthrylene and that between 2-A and 2-B in the presence of acenaphthylene. In both of the experiments, no scrambling of the aromatic ring took place. We consider that this is good support for ruling out the intermolecular mechanism.
  • 50
    • 1442336409 scopus 로고    scopus 로고
    • note
    • EHMO calculations were performed on a PC version of the EHMO program purchased from Kodansha Scientific, Ltd.: Details are described in the Supporting Information.
  • 51
    • 1442336410 scopus 로고    scopus 로고
    • to be published
    • DFT calculations of 1-A* and 1-B* support that photoirradiation put one electron into a σ* orbital of the Fe-Fe bond: Mogi, K.; Niibayashi, S.; Matsubara, K.; Nagashima, H., to be published.
    • Mogi, K.1    Niibayashi, S.2    Matsubara, K.3    Nagashima, H.4
  • 52
    • 1442360861 scopus 로고    scopus 로고
    • note
    • 3), whereas no luminescence was observed for 1-A.
  • 59
    • 1442336412 scopus 로고    scopus 로고
    • note
    • 9 are a = 10.056(7) Å, b = 16.089(10) Å, c = 9.376(6) Å, α = 90°, β = 91.53(9)°, and γ = 90°, Z = 4.
  • 60
    • 1442287407 scopus 로고    scopus 로고
    • note
    • Annealing of the pellets containing 1-A and 1-B resulted in a significant change of their IR spectra (IR-A and IR-B, respectively). Conversion of microcrystalline to amorphous may cause this change, which is promoted by photolysis of 1-A or thermal treatment of 1-B.
  • 62
    • 0004150157 scopus 로고    scopus 로고
    • University of Göttingen: Germany
    • (b) Sheldrick, G. M. SHELXL-97; University of Göttingen: Germany, 1997.
    • (1997) SHELXL-97
    • Sheldrick, G.M.1
  • 65
    • 1442360860 scopus 로고    scopus 로고
    • note
    • We attempted to measure DSC for the determination of ΔG° under an inert gas atmosphere; however, two overlapping peaks barely assignable were observed.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.