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For recent reviews, see; (a) S. Trofimenko, Chem. Rev., 1993, 93, 943;
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Trofimenko, S.1
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6
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85088234692
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note
-
RR′] with the 3- and 5-alkyl substituents listed respectively as superscripts.
-
-
-
-
7
-
-
33748734021
-
-
For a review of monomeric alkyl, hydride and hydroxide complexes of the s- and p-block metals, see ref. 1(b)
-
For a review of monomeric alkyl, hydride and hydroxide complexes of the s- and p-block metals, see ref. 1(b).
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8
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0029797766
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M. C. Kuchta, J. B. Bonanno and G. Parkin, J. Am. Chem. Soc., 1996, 118, 10914.
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(CF3)2] ligand to isolate a series of carbonyl derivatives of Cu, Ag and Au. See: H. V. R. Dias and W. Jin, J. Am. Chem. Soc., 1995, 117, 11 381;
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Inorg. Chem., 1996, 35, 3687;
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18
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84974761339
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RR′] derivatives with bulkier substituents (in both 3- and 5-positions) typically show a marked twisting of the pyrazolyl planes with respect to the Tl⋯B axis. For example, see: C. Dowling, D. Leslie, M. H. Chisholm and G. Parkin, Main Group Chemistry, 1995, 1, 29.
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0003438540
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cov(N) = 0.74 Å. See: L. Pauling, The Nature of The Chemical Bond, Cornell University Press, Ithaca, 3rd edn., 1960.
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Pauling, L.1
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21
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4243883474
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13 such an observation is not easily rationalized as a steric effect in which increased repulsion between the substituents in the 5-position and the B-H moiety would modify the bite of the ligand such that a longer Tl-N interaction would result. See: J. C. Calabrese, P. J. Domaille, S. Trofimenko and G. J. Long, Inorg. Chem., 1991, 30, 2975.
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H. V. R. Dias, H.-J. Kim, H.-L. Lu, K. Rajeshwar, N. R. de Tacconi, A. Derecskei-Kovacs and D. S. Marynick, Organometallics, 1996, 15, 2994.
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20544433165
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The van der Waals radii of Tl and F are 1.96 Å and 1.47 Å, respectively. See: A. Bondi, J. Phys. Chem., 1964, 68, 441.
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Bondi, A.1
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0011659307
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For reference, the Tl-F bond length in (TPP)TlF (TPP = tetraphenylporphyrinato) is 2.441(6) Å. See: A. G. Coutsolelos, M. Orfanopoulos and D. L. Ward, Polyhedron, 1991, 10, 885.
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0002611169
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For a review of secondary bonding (i.e. interactions with bond lengths that are intermediate between the sum of covalent and van der Waals radii), see: N. W. Alcock, Adv. Inorg. Chem. Radiochem., 1972, 15, 1.
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85088247675
-
-
note
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205Tl coupling constants is frequently not discernible.
-
-
-
-
40
-
-
85088235095
-
-
205Tl NMR studies due to the unavailability of a suitable probe for the latter nucleus
-
205Tl NMR studies due to the unavailability of a suitable probe for the latter nucleus.
-
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42
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0001119081
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33748716722
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Tl-F coupling constant data, see: W. Kitching, D. Praeger, C. J. Moore, D. Doddrell and W. Adcock, J. Organomet. Chem., 1974, 70, 339;
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0000892443
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J. A. Samuels, E. B. Lobkovsky, W. E. Streib, K. Folting, J. C. Huffman, J. W. Zwanziger and K G. Caulton, J. Am. Chem. Soc., 1993, 115, 5093;
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50
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33751391128
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J. A. Samuels, J. W. Zwanziger, E. B. Lobkovsky and K. G. Caulton, Inorg. Chem., 1992, 31, 4046.
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51
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85088254539
-
-
note
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Tl-F coupling constants to be close to zero.
-
-
-
-
52
-
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0001134370
-
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3. See: H. V. R. Dias, W. Jin, H.-J. Kim and H.-L. Lu, Inorg. Chem., 1996, 35, 2317.
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53
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85088257030
-
-
note
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1/2 ≈ 7 Hz).
-
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54
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0039120638
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18 (a) D. Sanz, R. M. Claramunt, J. Glaser, S. Trofimenko and J. Elguero, Magn. Reson. Chem., 1996, 34, 843;
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55
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(b) J. M. Lehn, J. P. Sauvage and B. Dietrich, J. Am. Chem. Soc., 1970, 92, 2916.
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33748720068
-
-
note
-
Tl-F coupling to the unco-ordinated pyrazolyl group is non-zero, the observed coupling would be expected to be greater than 566 Hz.
-
-
-
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58
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0000660743
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C. López, D. Sanz, R. M. Claramunt, S. Trofimenko and J. Elguero, J. Organomet. Chem., 1995, 503, 265.
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59
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85088261076
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note
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Tl-F coupling constant (Table 2).
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60
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0025305722
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