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Volumn 46, Issue 23, 2007, Pages 9827-9840

4-Amino- and 4-nitrodipicolinatovanadium(V) complexes and their hydroxylamido derivatives: Synthesis, aqueous, and solid-state properties

Author keywords

[No Author keywords available]

Indexed keywords

AMIDE; DIPICOLINIC ACID; PICOLINIC ACID DERIVATIVE; VANADIUM DERIVATIVE; WATER;

EID: 36348996465     PISSN: 00201669     EISSN: None     Source Type: Journal    
DOI: 10.1021/ic701233y     Document Type: Article
Times cited : (33)

References (64)
  • 1
    • 26444517894 scopus 로고    scopus 로고
    • 2nd ed, McCleverty, J, Meyer, T. J, Eds, Elsevier: Oxford
    • Crans, D. C.; Smee, J. J. In Comprehensive Coordination Chemistry, 2nd ed.; McCleverty, J., Meyer, T. J., Eds.; Elsevier: Oxford, 2003; Vol. 4, 175-239.
    • (2003) Comprehensive Coordination Chemistry , vol.4 , pp. 175-239
    • Crans, D.C.1    Smee, J.J.2
  • 51
    • 36349014168 scopus 로고    scopus 로고
    • The parent dipicolinate complexes are generally isolated between pH 1 and 2 where they are the most stable. In this pH range vanadate forms decavanadate, and the vanadium(V) is most likely to undergo redox reactions in the presence of hydroxylamines. Furthermore, the dipicolinate ligands are least soluble when protonated. Thus, careful attention to the pH and the order in which reagents are added can be critical for successful isolation of the product. The vanadium(V) complexes can be synthesized directly from metavanadate (NH 4, Na, or K+ salts) and the corresponding dipicolinic acid ligand (H2dipic, H2dipic- NH2, and H2dipic-NO2) at acidic pH (1-2) at 80°C as depicted in Scheme 1 to form complexes 1-3. Thus, the increased temperature is necessary to assure that all the dipicolinic acid (or its derivatives) dissolves. Because of the tendency to form decavanadate under the in
    • 2) at acidic pH (1-2) at 80°C as depicted in Scheme 1 to form complexes 1-3. Thus, the increased temperature is necessary to assure that all the dipicolinic acid (or its derivatives) dissolves. Because of the tendency to form decavanadate under the intermittent reaction conditions the preparation of the hydroxylamido complexes is most reliably obtained beginning from the dipicolinate complexes 1-3.
  • 56
    • 36348980372 scopus 로고    scopus 로고
    • Although formation of V10 is a major problem in preparation of these complexes, the concentrations are low, and the binary complexes are sufficiently stable that this species does not significantly impact these studies
    • 10 is a major problem in preparation of these complexes, the concentrations are low, and the binary complexes are sufficiently stable that this species does not significantly impact these studies.
  • 60
    • 36348932681 scopus 로고    scopus 로고
    • 3 stock solution should not be adjusted below ∼7 prior to mixing, or else the reaction will be seriously compromised.
    • 3 stock solution should not be adjusted below ∼7 prior to mixing, or else the reaction will be seriously compromised.
  • 62
    • 36349015303 scopus 로고    scopus 로고
    • Wavefunction, Inc.: Irvine, CA, 2006.
    • Wavefunction, Inc.: Irvine, CA, 2006.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.