188685-25-8Relevant articles and documents
Reversible, photoinduced activation of P4 by low-coordinate main group compounds
Dube, Jonathan W.,Graham, Cameron M. E.,Macdonald, Charles L. B.,Brown, Zachary D.,Power, Philip P.,Ragogna, Paul J.
supporting information, p. 6739 - 6744 (2014/06/09)
Two unique systems based on low-coordinate main group elements that activate P4 are shown to quantitatively release the phosphorus cage upon short exposure to UV light. This reactivity marks the first reversible reactivity of P4, and the germanium system can be cycled 5 times without appreciable loss in activity. Theoretical calculations reveal that the LUMO is antibonding with respect to the main group element-phosphorus bonds and bonding with respect to reforming the P4 tetrahedron, providing a rationale for this unprecedented activity, and suggesting that the process is tunable based on the substituents.
A germanium isocyanide complex featuring (n → π*) back-bonding and its conversion to a hydride/cyanide product via C-H bond activation under mild conditions
Brown, Zachary D.,Vasko, Petra,Fettinger, James C.,Tuononen, Heikki M.,Power, Philip P.
, p. 4045 - 4048 (2012/04/10)
Reaction of the diarylgermylene Ge(ArMe6)2 [Ar Me6 = C6H3-2,6-(C6H 2-2,4,6-(CH3)3)2] with tert-butyl isocyanide gave the Lewis adduct species (Ar
Synthesis and characterization of the monomeric diaryls M{C6H3-2,6-Mes2}2 (M = Ge, Sn, or Pb; Mes = 2,4,6-Me3C6H2-) and dimeric aryl-metal chlorides [M(Cl){C6H3-2,6-Mes2}]2 (M = Ge or Sn)
Simons, Richard S.,Pu, Lihung,Olmstead, Marilyn M.,Power, Philip P.
, p. 1920 - 1925 (2008/10/08)
The reaction of 2 equiv of LiC6H3-2,6-Mes2 (Mes = 2,4,6-Me3C6H2-) with GeCl2·dioxane, SnCl2, or PbCl2 in ether solution has resulted in the isolation of rare examples of monomeric, σ-bonded, diaryl derivatives M{C6H3-2,6-Mes2}2 (M = Ge (1), Sn (2), or Pb (3)). The compounds 1-3 are thermally stable, purple, crystalline solids with V-shaped geometries and remarkably wide (ca. 114.5°) interligand bond angles. The monoaryl metal chloride derivatives [M(Cl){C6H3-2,6-Mes2}]2 (M = Ge (4) or Sn (5)) were isolated by treatment of the appropriate dichlorides with either 1 equiv of LiC6H3-2,6-Mes2 or 1 equiv of the diaryls 1 or 2. The orange germanium compound 4 has a dimeric structure in which the monomers are linked by a relatively weak, 2.443(2) A?, Ge-Ge interaction. In sharp contrast, its yellow tin analogue 5 has a dimeric structure in which three-coordinate tin centers are associated by asymmetrically bridging chlorides. The compounds 1-3 constitute a unique, structurally characterized diaryl series for Ge, Sn, and Pb and display evidence of steric crowding that is significantly greater than that observed in previously known σ-bonded diorgano group 14 derivatives. The compounds 4 and 5 are the first fully structurally characterized organometal halide derivatives of Ge or Sn in which the organic ligand is monodentate, purely σ-bonded, and nonchelating.
