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5
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0000419781
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Helicate: Vier- und fünfkernige Doppelhelix-Komplexe aus CuI und Poly(bipyridin)-Liganden
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For a discussion about the self assembly of synthetic helicates using metal‐ion templates see
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(1988)
Angewandte Chemie
, vol.100
, pp. 1121
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Lehn, J.‐M.1
Rigault, A.2
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11
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0000290616
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The self assembly of [2]catenanes by means of a hydrogen‐bonding motif has been described recently
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(1992)
J. Am. Chem. Soc.
, vol.114
, pp. 5303
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Hunter, C.A.1
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18
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0000433056
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Ein [2]-Catenan auf Bestellung
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(1989)
Angewandte Chemie
, vol.101
, pp. 1404
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Ashton, P.R.1
Goodnow, T.T.2
Kaifer, A.E.3
Reddington, M.V.4
Slawin, A.M.Z.5
Spencer, N.6
Stoddart, J.F.7
Vicent, C.8
Williams, D.J.9
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20
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1242280982
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(1992)
J. Am. Chem. Soc.
, vol.114
, pp. 193
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Anelli, P.L.1
Ashton, P.R.2
Ballardini, R.3
Balzani, V.4
Delgado, M.5
Gandolfi, M.T.6
Goodnow, T.T.7
Kaifer, A.E.8
Philp, D.9
Pietraszkiewicz, M.10
Prodi, L.11
Reddington, M.V.12
Slawin, A.M.Z.13
Spencer, N.14
Stoddart, J.F.15
Vicent, C.16
Williams, D.J.17
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21
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0003066333
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Supramolekulare Chemie – Moleküle, Übermoleküle und molekulare Funktionseinheiten (Nobel-Vortrag)
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(1988)
Angewandte Chemie
, vol.100
, pp. 91
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Lehn, J.‐M.1
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23
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0000409230
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Perspektiven der Supramolekularen Chemie – von der molekularen Erkennung zur molekularen Informationsverarbeitung und Selbstorganisation
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(1990)
Angewandte Chemie
, vol.102
, pp. 1347
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Lehn, J.‐M.1
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30
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84989539768
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6 were dissolved in 3‐nitrobenzyl alcohol that had previously been coated onto a stainless steel probe tip. Spectra were recorded in the positive‐ion mode at a scan speed of 30 s per decade.
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31
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84989599283
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w = 0.137.
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32
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84989599284
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Kα radiation (graphite monochromator). The structure was solved by direct methods and refined an isotropically. Further details of the crystal structure can be obtained from the Cambridge Crystallographic Data Centre, 12 Union Road, GB‐Cambridge CB21EZ (UK), on quoting the full journal citation.
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33
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84989511799
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The equatorial plane of the cyclophane is defined as the mean plane of the four methylene carbon atoms.
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34
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84989525733
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6, there are additional weak stabilizing CH… O interactions between, for example, the α‐CH proton of the included bipyridinium unit nearest to the m‐xylyl spacer and the central oxygen atom of the BPP34C10 component (H… O = 2.52 Å, CH… O angle = 153°) and between the diametrically opposite central oxygen atom of the crown ether and one of the aromatic protons in the p‐xylyl spacer (H… O = 2.57 Å, CH… O angle = 159°).
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35
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84989525747
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6 this separation is 6.95 Å).
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36
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84989504696
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Each stack contains only one of the enantiomeric forms of the [2]catenane.
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39
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84989591659
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6 are shifted significantly from those observed in the spectra of free BHEEB and free cyclophane.
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41
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84989550909
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w = 0.097.
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42
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84989504659
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6. There are, for example, short H… O contacts between the central oxygen atom of the BPP34C10 component and one of the methylene protons of the tetracationic cyclophane component (H… O = 2.35 Å, CH… O angle = 157°) and between the diametrically opposite central ether oxygen atom and one of the α‐CH protons on the included bipyridinium unit (H… O = 2.58 Å, CH… O angle = 147°).
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43
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0000728385
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Selbstassoziierende [3]-Catenane
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(1991)
Angewandte Chemie
, vol.103
, pp. 1055
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Ashton, P.R.1
Brown, C.L.2
Chrystal, E.J.T.3
Goodnow, T.T.4
Kaifer, A.E.5
Parry, K.P.6
Slawin, A.M.Z.7
Spencer, N.8
Stoddart, J.F.9
Williams, D.J.10
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45
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84989586087
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2), 6.31 (s, 4H, “alongside” hydroquinone ring protons), 7.87 (t, 2H, 5‐position of m‐xylyl spacer), 8.04 (s, 2 H, 2‐position of m‐xylyl spacer), 8.17 (d, 4H, 4‐ and 6‐positions of m‐xylyl spacer), 8.23 (d, 8H, β‐CH bipyridinium protons), 9.13 (d, 8H, α‐CH bipyridinium protons).
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46
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84989525717
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c = 28 °C) of the “inside” hydroquinol resonances (δ = 3.17 and 5.53 at −60 °C, Δv = 944 Hz) nearest to the m‐xylyl spacer (see [23] for calculation).
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48
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84989550914
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1 H NMR spectroscopic study, but estimation of the barrier to circumrotation was not possible owing to the complexity of the spectra at low temperature.
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