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Volumn 45, Issue 25, 2006, Pages 10034-10036

Monohelical iron(II) and zinc(II) complexes of a (1R,2R)-cyclohexyl salen ligand with benz[a]anthryl sidearms

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EID: 33846161224     PISSN: 00201669     EISSN: None     Source Type: Journal    
DOI: 10.1021/ic061553z     Document Type: Article
Times cited : (37)

References (38)
  • 13
    • 33846131974 scopus 로고    scopus 로고
    • 2: C 84.86, H 5.50, N 4.50. Found: C 84.52, H 5.67, N 4.48.
    • 2: C 84.86, H 5.50, N 4.50. Found: C 84.52, H 5.67, N 4.48.
  • 17
    • 33846167448 scopus 로고    scopus 로고
    • Anhydrous zinc chloride (0.066 g, 0.48 mmol, sodium methoxide (0.078 g, 1.5 mmol, and (R,R)-3 (0.301 g, 0.48 mmol) were suspended into a 2:1 mixture of methylene chloride/ethanol (15 mL) and stirred for 16 h. The reaction mixture was concentrated and filtered to give a yellow solid that was subsequently dissolved into THF (20 mL) and filtered to remove fine insoluble solids. The clear filtrate was stirred for 2 h, resulting in the formation of a yellow precipitate, which was collected and washed consecutively with THF (5 mL) and ethanol (5 mL) to afford (R,R)-4 (0.177 g, 53, yield, Anal. Calcd for C44H32N2O2Zn: C 77.02, H 4.70, N 4.08. Found: C 77.19, H 4.65, N 4.21, R,R)-5 was synthesized in 68% yield by the same general procedure, with some variation in workup see Supporting Information, Anal. Calcd for C44H 32N2O2Fe: C 78.11, H 4.77, N 4.14. Found
    • 2Fe: C 78.11, H 4.77, N 4.14. Found: C 78.12, H 5.02, N 3.90.
  • 18
    • 33846162829 scopus 로고    scopus 로고
    • The sample used for crystallization was not thoroughly dried of residual solvent, and this is the source of ethanol in the crystals. Crystal data for (R,R)-4(pyridine)·[0.5C5H5N C 2H5OH, Bruker SMART 1000, yellow prisms, 0.44 x 0.24 x 0.22 mm3, C53.5H44.5N3.5O 3Zn, M, 849.80, hexagonal, a, 26.3597(6) Å, c, 10.2518(5) Å, V, 6169.0-(4) Å3, T, 100(2) K, space group P65, Z, 6, 2θ collection range 0.89-30.10°, h ± 37, k ± 36, 1 ± 14, μ(Mo Kα, 0.649 mm-1, graphite monochrometer, 71 849 reflections collected, 12 068 unique (R int, 0.0304) which were used in all calculations. R1, 0.0395 (all data) and wR2(F2, 0.0996. Flack parameter, 0.0036
    • 2) = 0.0996. Flack parameter = -0.003(6).
  • 19
    • 0032761925 scopus 로고    scopus 로고
    • Amendola, V.; Fabbrizzi, L.; Linati, L.; Mangano, C.; Pallavicini, P.; Pedrazzini, V.; Zema, M. Chem. Eur. J. 1999, 5, 3679. Racemic ligand was used; (R,R) gives M helices and (S,S) gives P helices.
    • Amendola, V.; Fabbrizzi, L.; Linati, L.; Mangano, C.; Pallavicini, P.; Pedrazzini, V.; Zema, M. Chem. Eur. J. 1999, 5, 3679. Racemic ligand was used; (R,R) gives M helices and (S,S) gives P helices.
  • 20
    • 33846134760 scopus 로고    scopus 로고
    • Single crystals suitable for X-ray analysis were grown by diffusion of ethanol into a pyridine solution of (R,R)-5. Crystal data for (R,R)-5(pyridine, Bruker SMART 1000, black prisms, 0.33 x 0.18 x 0.09 mm3, C49H37N3O2Fe, M, 755.67, monoclinic, a, 10.7342(11) Å, b, 19.595(2) Å, c, 17.7357(19) Å, b, 105.904(2)°, V, 3587.8(7) Å3, T, 100(2) K, space group P21, Z, 4, 2θ collection range 2.01-30.03°, h ± 15, k ± 27, 1 ± 24, μ(Mo Kα, 0.468 mm-1, graphite monochrometer, 41 757 reflections collected, 20 505 unique (Rint, 0.0322) which were used in all calculations. R1, 0.0539 (all data) and wR2(F2, 0.1107. Flack parameter, 0.0029
    • 2) = 0.1107. Flack parameter = 0.002(9).
  • 23
    • 33846173057 scopus 로고    scopus 로고
    • B3LYP* calculations carried out using ADF showed the M conformer to be more favorable as follows (kcal/mol, R,R)-4, 1.1; (R,R)-4(py, 3.6; (R,R)-5, 1.9; (R,R)-5py, 0.1
    • B3LYP* calculations carried out using ADF showed the M conformer to be more favorable as follows (kcal/mol). (R,R)-4, 1.1; (R,R)-4(py), 3.6; (R,R)-5, 1.9; (R,R)-5(py), 0.1.
  • 27
    • 33846169433 scopus 로고    scopus 로고
    • 1998, 2659
    • (c) 1998, 2659.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.