Concepedia

Synthesis, Structure, and Reactivity of Kinetically Stabilized Divalent Organolead Compounds (Plumbylenes)

Naokazu Kano, Kazusato Shibata, Norihiro Tokitoh, Renji Okazaki

Organometallics · 1999 · 50 citations · 33 references

DOI

Concepts

Abstract

Divalent organolead compounds (plumbylenes; Tip 2 Pb ( 6; Tip = 2,4,6-triisopropylphenyl) and Tbt(R)Pb ( 7a, R = Tbt; 7b, R = Ttm; 7c, R = Tip; 7d, R = Dis; Tbt = 2,4,6-tris[bis(trimethylsilyl)methyl]phenyl, Ttm = 2,4,6-tris[(trimethylsilyl)methyl]phenyl, and Dis = bis(trimethylsilyl)methyl)) were synthesized by taking advantage of kinetic stabilization afforded by bulky substituents and characterized by UV/vis and 207 Pb NMR spectroscopy. X-ray structural analysis revealed that plumbylene 7a has a V-shaped, monomeric structure. Reactions of these plumbylenes with methyl iodide, carbon tetrabromide, diphenyl disulfide, diphenyl diselenide, and elemental sulfur are described. New methods for the synthesis of plumbylenes from tetravalent organolead compounds, by reductive debromination of dibromoplumbanes and exhaustive desulfurization of tetrathiaplumbolanes, were developed.

References

33

Monomeric, volatile bivalent amides of group IV<sub>B</sub>elements, M(NR<sup>1</sup><sub>2</sub>)<sub>2</sub>and M(NR<sup>1</sup>R<sup>2</sup>)<sub>2</sub>(MGe, Sn, or Pb; R<sup>1</sup>Me<sub>3</sub>Si, R<sup>2</sup>Me<sub>3</sub>C)

David Harris, Michael F. Läppert · Journal of the Chemical Society Chemical Communications · 1974 · 323 citations

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Synthesis and Characterization of the Monomeric Diaryls M{C<sub>6</sub>H<sub>3</sub>-2,6-Mes<sub>2</sub>}<sub>2</sub> (M = Ge, Sn, or Pb; Mes = 2,4,6-Me<sub>3</sub>C<sub>6</sub>H<sub>2</sub>−) and Dimeric Aryl−Metal Chlorides [M(Cl){C<sub>6</sub>H<sub>3</sub>-2,6-Mes<sub>2</sub>}]<sub>2</sub> (M = Ge or Sn)

Richard S. Simons, Lihung Pu, Marilyn M. Olmstead et al. · Organometallics · 1997 · 315 citations

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Subvalent Group 4B metal alkyls and amides. Part 5. The synthesis and physical properties of thermally stable amides of germanium(<scp>II</scp>), tin(<scp>II</scp>), and lead(<scp>II</scp>)

M. J. S. GYNANE, David Harris, Michael F. Läppert et al. · Journal of the Chemical Society Dalton Transactions · 1977 · 268 citations

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Stabilisation of metals in a low co-ordinative environment using the bis(trimethylsilyl)methyl ligand; coloured Sn II and Pb II alkyls, M[CH(SiMe3)2]2

P. J. Davidson, Michael F. Läppert · Journal of the Chemical Society Chemical Communications · 1973 · 267 citations

, , +16

Molecular structures of the main group 4 metal(II) bis(trimethylsilyl)-amides M[N(SiMe3)2]2 in the crystal (X-ray) and vapour (gas-phase electron diffraction)

Torgny Fjeldberg, H. Hope, Michael F. Läppert et al. · Journal of the Chemical Society Chemical Communications · 1983 · 188 citations

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