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and ref [9]
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b) For later syntheses, see also G. Mehta, G. Panda, P. V. V. Srirama Sarma, Tetrahedron Lett. 1998, 39, 5835 and ref [9].
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24
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8444223980
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note
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3, 22 °C): δ = 7.37 (dd, 3 H), 7.61 (d, 3H), 7.65 (d, 3H), 7.83 ppm (s, 3H).
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25
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8444222839
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2 converged at R1 = 0.0333 and wR2 = 0.0687 for 77 parameters and 462 reflections with I > 2σ(I) (R1 = 0.0423, wR2 = 0.0718 for 542 unique reflections) and a GOF of 1.072. CCDC-238109 and CCDC-238110 (2-o and 2-t) contain the supplementary crystallographic data for this paper. These data can be obtained free of charge via www.ccdc.cam.ac.uk/conts/retrieving.html (or from the Cambridge Crystallographic Data Centre, 12, Union Road, Cambridge CB21EZ, UK; fax: (+ 44) 1223-336-033; or deposit@ccdc.cam.ac.uk).
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27
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0029835973
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30
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8444249382
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note
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12 bowl (2) pictured in Figure 1 would be designated as M, assuming that the concave surface is facing the reader.
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31
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0002211289
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34
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8444239809
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note
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3, 22 °C): δ = 7.37 (dd, 3 H), 7.61 (d, 3 H), 7.65(d, 3H), 7.83 ppm (s, 3H).
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-
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35
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8444234032
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note
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2 converged at R1 =0.0613 and wR2 = 0.1092 for 412 parameters, 30 restraints, and 2375 reflections with I > 2σ(I) (R1 = 0.1461, wR2 = 0.1292 for 5169 unique reflections) and a GOF of 0.821. CCDC-238111 contains the supplementary crystallographic data for 3; see ref. [11] for ordering information.
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36
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0037179960
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a) F. A. Cotton, E. A. Hillard, C. Y. Liu, C. A. Murillo, W. Wang, X. Wang, X. Inorg. Chim. Acta 2002, 337, 233;
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Wang, W.5
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2442620343
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Dikarev, E.V.1
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0011401883
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41
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8444234770
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note
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Higher level molecular orbital calculations (B3LYP/6-31G*) predict bond lengths [Å] that correlate approximately with those derived from simple considerations of Pauling bond orders (see Figure 1): a) 1.3917, b) 1.4571, c) 1.4237, d) 1.3908, e) 1.4228, f) 1.3851, g) 1.4342, h) 1.4063, i) 1.3787, j) 1.4424, k) 1.4124, l) 1.5138, m) 1.4278. It is interesting to note that metal complexation is observed at the rim bond with the highest Pauling order (a), in preference even to bonds that are calculated to have shorter lengths (d, f, and i).
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