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Volumn 48, Issue 38, 2009, Pages 7055-7058

Inorganic cryptand: Size-selective strong metallic cation encapsulation by a disilicoicosatungstate (Si2W20) polyoxometalate

Author keywords

Cryptands; Encapsulation; Polyoxometalates; Size selectivity; Tungsten

Indexed keywords

CRYPTANDS; METALLIC CATIONS; POLYOXOMETALATES; SIZE SELECTIVITY; SIZE-SELECTIVE;

EID: 70349925235     PISSN: 14337851     EISSN: None     Source Type: Journal    
DOI: 10.1002/anie.200903275     Document Type: Article
Times cited : (25)

References (41)
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    • Polyoxo Anions: Synthesis and Structure
    • M. T Pope Ed. : A. G Wedd, Elsevier Science New York, chap. 4.11
    • c) "Polyoxo Anions: Synthesis and Structure": M. T Pope in Comprehensive Coordination Chemistry II: Transition Metal Groups 3-6, Vol.4 (Ed. : A. G Wedd), Elsevier Science New York, 2004, chap. 4.11, pp. 635-678.
    • (2004) Comprehensive Coordination Chemistry II: Transition Metal Groups 3-6 , vol.4 , pp. 635-678
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    • Angew. Chem. Int. Ed. 2005, 44, 7757-7761;
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    • Angew. Chem. Int. Ed. 2006, 45, 1956-1960;
    • (2006) Angew. Chem. Int. Ed. , vol.45 , pp. 1956-1960
  • 30
    • 70349972639 scopus 로고    scopus 로고
    • 2+. The observation of three signals is probably because of the fast exchange in the disordered cation positions in Pb-1.
    • 2+. The observation of three signals is probably because of the fast exchange in the disordered cation positions in Pb-1.
  • 32
    • 70349970997 scopus 로고    scopus 로고
    • 85Rb:I=5/2
    • 85Rb: I=5/2).
  • 35
    • 70349973150 scopus 로고    scopus 로고
    • + (5.63) in MeCN.[18] This shows the sizeselective encapsulation of monocationic metallic cations from DCH-18C6 to the cavity of 1
    • + (5.63) in MeCN.[18] This shows the sizeselective encapsulation of monocationic metallic cations from DCH-18C6 to the cavity of 1.
  • 37
    • 70349973945 scopus 로고    scopus 로고
    • 3+ (1.30 Å) was not encapsulated, and coordinated to outer W=O groups. Therefore, the encapsulation of metallic cations for 1 depends not only on size, but also on charge. This effect is probably because the stronger electrostatic interaction of 1 with multivalent cations leads to the stabilization even by the outer W=O groups.
    • 3+ (1.30 Å) was not encapsulated, and coordinated to outer W=O groups. Therefore, the encapsulation of metallic cations for 1 depends not only on size, but also on charge. This effect is probably because the stronger electrostatic interaction of 1 with multivalent cations leads to the stabilization even by the outer W=O groups.
  • 38
    • 70349970319 scopus 로고    scopus 로고
    • + ion in Ag-1 could not be strictly determined by the X-ray analysis
    • + ion in Ag-1 could not be strictly determined by the X-ray analysis.
  • 39
    • 70349968306 scopus 로고    scopus 로고
    • 2+ salt of 1 was instantly formed, and the formation of Sr-1 could not be confirmed
    • 2+ salt of 1 was instantly formed, and the formation of Sr-1 could not be confirmed.
  • 41
    • 70349972914 scopus 로고    scopus 로고
    • 29Si NMR signal appeared at ô = -85.8 ppm with disappearance of the signal of Pb-1 at ô = -79.6 ppm, thus indicating the regeneration of 1.
    • 29Si NMR signal appeared at ô = -85.8 ppm with disappearance of the signal of Pb-1 at ô = -79.6 ppm, thus indicating the regeneration of 1.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.