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Volumn 27, Issue 23, 2008, Pages 6321-6325

Chiral cis-platinum acetylide complexes via diphosphine ligand exchange: Effect of the ligand

Author keywords

[No Author keywords available]

Indexed keywords

CHROMIUM COMPOUNDS; CIRCULAR DICHROISM SPECTROSCOPY; DICHROISM; LIGANDS; OPTICAL PROPERTIES; PH EFFECTS; PHOSPHORUS COMPOUNDS; PLATINUM;

EID: 57849099724     PISSN: 02767333     EISSN: None     Source Type: Journal    
DOI: 10.1021/om800633h     Document Type: Article
Times cited : (24)

References (52)
  • 4
    • 55349133567 scopus 로고    scopus 로고
    • Reviews, see: a
    • Reviews, see: (a) Lee, S. J.; Lin, W. Acc Chem. Res. 2008, 47, 521-537.
    • (2008) Acc Chem. Res , vol.47 , pp. 521-537
    • Lee, S.J.1    Lin, W.2
  • 5
    • 57849124113 scopus 로고    scopus 로고
    • Haley, M. M, Tykwinski, R. R. Eds, Wiley-VCH, Chapter 10
    • (b) Yam, V. W. W.; Tao, C. H. In Carbon-Rich Compounds; Haley, M. M., Tykwinski, R. R. Eds.; Wiley-VCH, 2006; Chapter 10.
    • (2006) Carbon-Rich Compounds
    • Yam, V.W.W.1    Tao, C.H.2
  • 40
    • 57849159490 scopus 로고    scopus 로고
    • For other examples of ligand exchange at a Pt-acetylide center, see refs 3a and 7a.
    • For other examples of ligand exchange at a Pt-acetylide center, see refs 3a and 7a.
  • 41
    • 57849105604 scopus 로고    scopus 로고
    • See Supporting Information for details
    • See Supporting Information for details.
  • 43
    • 57849139868 scopus 로고    scopus 로고
    • c-Pt = 1105 Hz. See Supporting Information (Figures S45-47).
    • c-Pt = 1105 Hz. See Supporting Information (Figures S45-47).
  • 44
    • 57849138590 scopus 로고    scopus 로고
    • C-P = 3.0 and 2.7 Hz (cis).
    • C-P = 3.0 and 2.7 Hz (cis).
  • 45
    • 57849140741 scopus 로고    scopus 로고
    • For a discussion of the significance of P-Pt-P bite angles, see for example: (a) Freixa, Z.; van Leeuwen, P. W. N. M. Dalton Trans. 2003, 1890-1901.
    • For a discussion of the significance of P-Pt-P bite angles, see for example: (a) Freixa, Z.; van Leeuwen, P. W. N. M. Dalton Trans. 2003, 1890-1901.
  • 48
    • 57849124247 scopus 로고    scopus 로고
    • The UV-vis spectra were recorded for pure ligands 2b-f, and all show a high-energy absorption between 254 and 263 nm corresponding to the π-π* transition for the phenyl chromophores with < 16 000 M -1 cm-1. These absorptions are also present in all of the cis-Pt-acetylide complexes that contain these ligands. The circular dichroism (CD) spectral analysis of the pure ligands R-PROPHOS (2c) and S, S-BDPP (2d) show weak signals at 228 and 243 nm, respectively, while the CD spectra of S,S-CHIRAPHOS (2b, R,R-Me-DUPHOS (2e, and R,R-NORPHOS (2f) contain stronger signals at 229, 317, and 233 nm, respectively. The CD spectra of all five ligands show at least one cross-over point in the range 236-275 nm. In all cases the absolute signal intensity of the pure ligand is Δε < 10 M-1 cm-1 for absorptions ≥225 nm; see Supporting Information for spe
    • -1 for absorptions ≥225 nm; see Supporting Information for spectra (Figures S1 and S2).
  • 49
    • 57849160370 scopus 로고    scopus 로고
    • For discussion of MLCT in Pt-acetylides, see: (a)Ref 2e. (b) Saha, R.; Qaium, M. A.; Debnath, D.; Younus, M.; Chawdhury, N.; Sultana, N.; Kociok-Köhn, G.; Ooi, L.-L.; Raithby, P. R.; Kijima, M. Dalton Trans. 2005, 2760, 2765.
    • For discussion of MLCT in Pt-acetylides, see: (a)Ref 2e. (b) Saha, R.; Qaium, M. A.; Debnath, D.; Younus, M.; Chawdhury, N.; Sultana, N.; Kociok-Köhn, G.; Ooi, L.-L.; Raithby, P. R.; Kijima, M. Dalton Trans. 2005, 2760, 2765.
  • 52
    • 57849127321 scopus 로고    scopus 로고
    • For a detailed description of the procedure used for the UV-vis and CD spectroscopic studies, see the Supporting Information
    • For a detailed description of the procedure used for the UV-vis and CD spectroscopic studies, see the Supporting Information.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.