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Volumn 133, Issue 15, 2011, Pages 5853-5860

Dramatic structural rearrangements in porous coordination networks

Author keywords

[No Author keywords available]

Indexed keywords

AB INITIO; AMORPHOUS PHASE; CONTROL EXPERIMENTS; COORDINATION NETWORKS; CRYSTALLINE-TO-AMORPHOUS; ELEVATED TEMPERATURE; ISOSTRUCTURAL; MECHANISTIC ASPECTS; MOLECULAR REARRANGEMENT; PHASE TRANSFORMATION; STRUCTURAL INFORMATION; STRUCTURAL REARRANGEMENT; X-RAY POWDER;

EID: 79954555818     PISSN: 00027863     EISSN: 15205126     Source Type: Journal    
DOI: 10.1021/ja109160a     Document Type: Article
Times cited : (86)

References (49)
  • 21
  • 27
    • 0004326059 scopus 로고
    • Oxford University Press: Oxford, U.K.
    • Izumi, F. The Rietveld Method; Oxford University Press: Oxford, U.K., 1995.
    • (1995) The Rietveld Method
    • Izumi, F.1
  • 31
    • 79954524381 scopus 로고    scopus 로고
    • Robson et al. reported the network 3 without detailed information in reference. (1) We attempted to redetermine the crystal structure in this study using single crystal X-ray diffraction, but high quality data was not obtained due to polycrystallinity. However, we determined the 10,3- b type framework (see ref 42). Our X-ray powder diffraction experiments, TG-DSC, and elemental analysis suggest that the product 3 is the same interpenetrated network as 1 and 2. Therefore, we used 3 as a starting material for the heating experiment
    • Robson et al. reported the network 3 without detailed information in reference. (1) We attempted to redetermine the crystal structure in this study using single crystal X-ray diffraction, but high quality data was not obtained due to polycrystallinity. However, we determined the 10,3- b type framework (see ref 42). Our X-ray powder diffraction experiments, TG-DSC, and elemental analysis suggest that the product 3 is the same interpenetrated network as 1 and 2. Therefore, we used 3 as a starting material for the heating experiment.
  • 34
    • 79954510814 scopus 로고    scopus 로고
    • For the details of the ab initio structure determination at 95 K (vacuum), and structural information, see Supporting Information.
    • For the details of the ab initio structure determination at 95 K (vacuum), and structural information, see Supporting Information.
  • 35
    • 79954567407 scopus 로고    scopus 로고
    • 1 and 1a were collected at different temperatures 95 K (vacuum) and 82 K.
    • 1 and 1a were collected at different temperatures 95 K (vacuum) and 82 K.
  • 41
    • 16844375321 scopus 로고    scopus 로고
    • 1b has an interpenetrated structure in which triphenylene is intercalated between two triazine ligands. Triphenylene is regarded as a host framework rather than guest because it cannot be replaced by common aromatic compounds under guest exchange conditions, due to the strong stacking between triazine panels and triphenylene thorough charge-transfer interactions.
    • Ohmori, O.; Kawano, M.; Fujita, M. Angew. Chem. Int. Ed. 2005, 44, 1962-1964 1b has an interpenetrated structure in which triphenylene is intercalated between two triazine ligands. Triphenylene is regarded as a host framework rather than guest because it cannot be replaced by common aromatic compounds under guest exchange conditions, due to the strong stacking between triazine panels and triphenylene thorough charge-transfer interactions.
    • (2005) Angew. Chem. Int. Ed. , vol.44 , pp. 1962-1964
    • Ohmori, O.1    Kawano, M.2    Fujita, M.3
  • 42
    • 79954504967 scopus 로고    scopus 로고
    • See Supporting Information to see the XRPD pattern of 2a obtained after heating 2 and 2b at 553 K (Figure S10). We also obtained the same XRPD pattern and hence the same interpenetrated structure 2a from a biporous coordination network reported in ref 29 (Figure S11).
    • See Supporting Information to see the XRPD pattern of 2a obtained after heating 2 and 2b at 553 K (Figure S10). We also obtained the same XRPD pattern and hence the same interpenetrated structure 2a from a biporous coordination network reported in ref 29 (Figure S11).
  • 43
    • 79954465845 scopus 로고    scopus 로고
    • 2) (3c) although 3 can be obtained as a minor product. The network 3c has 1D channels formed by π-π stacking of TPT (Figure S24). See Supporting Information for detailed information.
    • 2) (3c) although 3 can be obtained as a minor product. The network 3c has 1D channels formed by π-π stacking of TPT (Figure S24). See Supporting Information for detailed information.
  • 44
    • 79954519091 scopus 로고    scopus 로고
    • Compound 3 did not provide a clear XRPD pattern after reaching 573 K, whereas compounds 1 and 2 having good crystallinity provided 1a and 2a via crystalline-to-amorphous-to-crystalline (CAC) transformation at 573 K. In the case of 3, the equivalent 3a obtained after the amorphous phase is not crystalline enough and cannot be characterized by ab initio X-ray diffraction. However, similarities with the diffraction pattern of 2a and elemental analyses suggest the same desolvated structure.
    • Compound 3 did not provide a clear XRPD pattern after reaching 573 K, whereas compounds 1 and 2 having good crystallinity provided 1a and 2a via crystalline-to-amorphous-to-crystalline (CAC) transformation at 573 K. In the case of 3, the equivalent 3a obtained after the amorphous phase is not crystalline enough and cannot be characterized by ab initio X-ray diffraction. However, similarities with the diffraction pattern of 2a and elemental analyses suggest the same desolvated structure.
  • 45
    • 79954491540 scopus 로고    scopus 로고
    • 2, since it is very likely that solid-liquid phase was created at 573 K, the most stable product 3b was obtained.
    • 2, since it is very likely that solid-liquid phase was created at 573 K, the most stable product 3b was obtained.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.