Cluster self-assembly of di[gold(I)]halonium cations

Schmidbaur H, Hamel A, Mitzel NW, Schier A, Nogai S (2002)
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 99(8): 4916-4921.

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Autor*in
Schmidbaur, H; Hamel, A; Mitzel, Norbert W.UniBi; Schier, A; Nogai, S
Abstract / Bemerkung
Treatment of gold(l) halide complexes of the type L-Au-X [where L = PPh3, PEt3 with X = Cl, Br, I, or L = 2,6-(MeO)(2)C6H3PPh2 with X = Cl] with AgSbF6 in the molar ratio 2:1 in dichloromethane/tetrahydrofuran at -78degreesC affords high yields of di[gold(l)]halonium salts of the formula {X[Au(PR3)](2)}(+) SbF6- (2-8). A determination of the crystal structures of the four triarylphosphine complexes (2-4, 8) revealed the presence of novel tetranuclear dications with a highly symmetrical structure (point group S-4) that arises from self-assembly of the dinuclear monocations through a set of four equivalent aurophilic Au-Au interactions. A comparison with two reference structures of corresponding chloronium perchlorate and bromonium tetrafluoroborate salts with monomeric, dinuclear cations shows that the geometry of the latter is greatly altered on dimerization to optimize the interactions between the closed-shelf metal centers (Au: 5d(10)). Weak metallophilic bonding clearly becomes significant only in crystal lattices where anions with a larger ionic radius (SbF6- vs. BF4-, ClO4-) reduce the otherwise dominant role of strong interionic Coulomb forces, The results indicate that aurophilic bonding is indeed an ubiquitous, quite dependable mode of intermetallic interactions provided that the right environment is chosen to allow the weak forces to become operative.
Erscheinungsjahr
2002
Zeitschriftentitel
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
Band
99
Ausgabe
8
Seite(n)
4916-4921
ISSN
0027-8424
eISSN
1091-6490
Page URI
https://pub.uni-bielefeld.de/record/1928767

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Schmidbaur H, Hamel A, Mitzel NW, Schier A, Nogai S. Cluster self-assembly of di[gold(I)]halonium cations. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA. 2002;99(8):4916-4921.
Schmidbaur, H., Hamel, A., Mitzel, N. W., Schier, A., & Nogai, S. (2002). Cluster self-assembly of di[gold(I)]halonium cations. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 99(8), 4916-4921. https://doi.org/10.1073/pnas.062643599
Schmidbaur, H, Hamel, A, Mitzel, Norbert W., Schier, A, and Nogai, S. 2002. “Cluster self-assembly of di[gold(I)]halonium cations”. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 99 (8): 4916-4921.
Schmidbaur, H., Hamel, A., Mitzel, N. W., Schier, A., and Nogai, S. (2002). Cluster self-assembly of di[gold(I)]halonium cations. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 99, 4916-4921.
Schmidbaur, H., et al., 2002. Cluster self-assembly of di[gold(I)]halonium cations. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 99(8), p 4916-4921.
H. Schmidbaur, et al., “Cluster self-assembly of di[gold(I)]halonium cations”, PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, vol. 99, 2002, pp. 4916-4921.
Schmidbaur, H., Hamel, A., Mitzel, N.W., Schier, A., Nogai, S.: Cluster self-assembly of di[gold(I)]halonium cations. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA. 99, 4916-4921 (2002).
Schmidbaur, H, Hamel, A, Mitzel, Norbert W., Schier, A, and Nogai, S. “Cluster self-assembly of di[gold(I)]halonium cations”. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 99.8 (2002): 4916-4921.

16 Zitationen in Europe PMC

Daten bereitgestellt von Europe PubMed Central.

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