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Volumn , Issue 20, 1997, Pages 3713-3717

Synthesis and structural characterization of tris[3-trifluoromethyl-5-(2-thienyl)pyrazolyl]hydroborato thallium, Tl[TpCF3,Tn]: A monovalent thallium complex with a highly solvent dependent JTl-F coupling constant, ranging from 0 to 850 Hz

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EID: 33748722523     PISSN: 03009246     EISSN: None     Source Type: Journal    
DOI: 10.1039/a703496b     Document Type: Article
Times cited : (34)

References (62)
  • 1
    • 0010636960 scopus 로고
    • For recent reviews, see; (a) S. Trofimenko, Chem. Rev., 1993, 93, 943;
    • (1993) Chem. Rev. , vol.93 , pp. 943
    • Trofimenko, S.1
  • 6
    • 85088234692 scopus 로고    scopus 로고
    • note
    • RR′] with the 3- and 5-alkyl substituents listed respectively as superscripts.
  • 7
    • 33748734021 scopus 로고    scopus 로고
    • 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).
  • 15
    • 0007745986 scopus 로고
    • (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;
    • (1995) J. Am. Chem. Soc. , vol.117 , pp. 11381
    • Dias, H.V.R.1    Jin, W.2
  • 16
    • 0007794431 scopus 로고    scopus 로고
    • Inorg. Chem., 1996, 35, 3687;
    • (1996) Inorg. Chem. , vol.35 , pp. 3687
  • 18
    • 84974761339 scopus 로고
    • 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.
    • (1995) Main Group Chemistry , vol.1 , pp. 29
    • Dowling, C.1    Leslie, D.2    Chisholm, M.H.3    Parkin, G.4
  • 19
    • 0003438540 scopus 로고
    • Cornell University Press, Ithaca, 3rd edn.
    • cov(N) = 0.74 Å. See: L. Pauling, The Nature of The Chemical Bond, Cornell University Press, Ithaca, 3rd edn., 1960.
    • (1960) The Nature of the Chemical Bond
    • Pauling, L.1
  • 21
    • 4243883474 scopus 로고
    • 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.
    • (1991) Inorg. Chem. , vol.30 , pp. 2975
    • Calabrese, J.C.1    Domaille, P.J.2    Trofimenko, S.3    Long, G.J.4
  • 23
    • 20544433165 scopus 로고
    • 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.
    • (1964) J. Phys. Chem. , vol.68 , pp. 441
    • Bondi, A.1
  • 24
    • 0011659307 scopus 로고
    • 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.
    • (1991) Polyhedron , vol.10 , pp. 885
    • Coutsolelos, A.G.1    Orfanopoulos, M.2    Ward, D.L.3
  • 25
    • 0002611169 scopus 로고
    • 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.
    • (1972) Adv. Inorg. Chem. Radiochem. , vol.15 , pp. 1
    • Alcock, N.W.1
  • 39
    • 85088247675 scopus 로고    scopus 로고
    • note
    • 205Tl coupling constants is frequently not discernible.
  • 40
    • 85088235095 scopus 로고    scopus 로고
    • 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.
  • 51
    • 85088254539 scopus 로고    scopus 로고
    • note
    • Tl-F coupling constants to be close to zero.
  • 53
    • 85088257030 scopus 로고    scopus 로고
    • note
    • 1/2 ≈ 7 Hz).
  • 57
    • 33748720068 scopus 로고    scopus 로고
    • 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.
  • 59
    • 85088261076 scopus 로고    scopus 로고
    • note
    • Tl-F coupling constant (Table 2).


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.