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Volumn 47, Issue 9, 2008, Pages 3625-3633

Complexation of molybdenum(V) with glycolic acid: An unusual orientation of glycolato ligand in {Mo2O4}2+ complexes

Author keywords

[No Author keywords available]

Indexed keywords

GLYCOLIC ACID; GLYCOLIC ACID DERIVATIVE; LIGAND; MOLYBDENUM; ORGANOMETALLIC COMPOUND; OXIDE;

EID: 44149120027     PISSN: 00201669     EISSN: None     Source Type: Journal    
DOI: 10.1021/ic7020726     Document Type: Article
Times cited : (42)

References (66)
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    • (b) Burgess, B. K. Chem. Rev. 1990, 90, 1377-1406.
    • (1990) Chem. Rev , vol.90 , pp. 1377-1406
    • Burgess, B.K.1
  • 26
    • 44149126284 scopus 로고    scopus 로고
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    • Sheldrick, G. M. SHELXTL, version 6.12; Bruker Analytical X-ray Systems, Inc, Madison, WI, 2000
    • Sheldrick, G. M. SHELXTL, version 6.12; Bruker Analytical X-ray Systems, Inc.: Madison, WI, 2000.
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    • CrystalMaker for Windows, version 1.4.5; CrystalMaker Software Ltd.: Oxfordshire, U.K., 2007.
  • 40
    • 44149087692 scopus 로고    scopus 로고
    • The shorter metal-metal bond length in 3 (2.5593(4) Å) as compared to 1 and 2 is due to the presence of pyridine ligands whose nature is electron-donating. As a rule, longer metal-metal bonds occur in complexes with the electron-withdrawing ligands such as chlorides and bromides.
    • The shorter metal-metal bond length in 3 (2.5593(4) Å) as compared to 1 and 2 is due to the presence of pyridine ligands whose nature is electron-donating. As a rule, longer metal-metal bonds occur in complexes with the electron-withdrawing ligands such as chlorides and bromides.
  • 43
    • 44149115554 scopus 로고    scopus 로고
    • The {Mo4O4(μ3-O)2(μ 2-O)2(glyc)2} core of 4 and 5 is a structural analogue of the alkoxide-containing {Mo4O 4(μ3-O)2(μ2-O) 2(μ2-OR)2}2, R, Me, Et) core, in which a monodentate alkoxide serves a role of the alkoxyl oxygen in 4 and 5 (see refs 28 and 29, The rhomboid arrangement of metal atoms in 4, 5, and the alkoxide tetranuclear clusters is a motif often found in various contexts of molybdenum(V) coordination chemistry
    • 2+ (R = Me, Et) core, in which a monodentate alkoxide serves a role of the alkoxyl oxygen in 4 and 5 (see refs 28 and 29). The rhomboid arrangement of metal atoms in 4, 5, and the alkoxide tetranuclear clusters is a motif often found in various contexts of molybdenum(V) coordination chemistry.
  • 44
    • 44149105987 scopus 로고    scopus 로고
    • The sum of the corresponding van der Waals radii is significantly longer, 3.04 Å. Data were taken from: Douglas, B.; McDaniel, D.; Alexander, J. Concepts and Models of Inorganic Chemistry, 3rd ed.; John Wiley and Sons: New York, 1994; p 102.
    • The sum of the corresponding van der Waals radii is significantly longer, 3.04 Å. Data were taken from: Douglas, B.; McDaniel, D.; Alexander, J. Concepts and Models of Inorganic Chemistry, 3rd ed.; John Wiley and Sons: New York, 1994; p 102.
  • 49
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    • McCleverty, J. A, Meyer, T. J, Eds, Elsevier Pergamon: Amsterdam, Chapter 4.7, pp
    • (a) Young, C. G. In. Comprehensive Coordination Chemistry II; McCleverty, J. A.; Meyer, T. J., Eds.; Elsevier Pergamon: Amsterdam, 2004; Vol. 4, Chapter 4.7, pp 415-527.
    • (2004) Comprehensive Coordination Chemistry II , vol.4 , pp. 415-527
    • Young, C.G.1
  • 60
    • 44149127306 scopus 로고    scopus 로고
    • 2- was assumed in order to provide a plausible explanation of the solution NMR spectra. Nevertheless, the X-ray structure analysis of a potassium salt of dioxotungstate(VI) which crystallized from such a solution revealed the usual disposition of ligands, i.e., the one with the carboxylate oxygen atoms occupying the trans sites. See: Ramos, M. L.; Pereira, M. M.; Beja, A. M.; Silva, M. R.; Paixao, J. A.; Gil, V. M. S. J. Chem. Soc., Dalton Trans. 2002, 2126-2131.
    • 2- was assumed in order to provide a plausible explanation of the solution NMR spectra. Nevertheless, the X-ray structure analysis of a potassium salt of dioxotungstate(VI) which crystallized from such a solution revealed the usual disposition of ligands, i.e., the one with the carboxylate oxygen atoms occupying the trans sites. See: Ramos, M. L.; Pereira, M. M.; Beja, A. M.; Silva, M. R.; Paixao, J. A.; Gil, V. M. S. J. Chem. Soc., Dalton Trans. 2002, 2126-2131.
  • 66
    • 44149091764 scopus 로고    scopus 로고
    • Geometry optimization for the 3a isomer was done using the data from the crystal structure of 3 as a starting point. The trial geometry of 3c was derived by reversing the orientation of glycolato ligands in 3.
    • Geometry optimization for the 3a isomer was done using the data from the crystal structure of 3 as a starting point. The trial geometry of 3c was derived by reversing the orientation of glycolato ligands in 3.


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