Very Large Changes in Bond Length and Bond Angle in a Heavy Group 14 Element Alkyne Analogue by Modification of a Remote Ligand Substituent.

Roland C. Fischer, Lihung Pu, James C. Fettinger, Marcin A. Brynda, Philip P. Power

Publikation: Beitrag in einer FachzeitschriftArtikel


The synthesis and characterization of the compd. Me3Si-4-Ar'SnSnAr'-4-SiMe3 (Ar'-4-SiMe3 = C6H2-2,6-(C6H3-2,6-i-Pr2)2-4-SiMe3) shows that it has a Sn-Sn bond length = 3.066(1) Å and a Sn-Sn-C bending angle of 99.25(14)°. These parameters differ by ∼0.4 Å and ∼26° from those previously reported for the closely related Ar'SnSnAr' (Ar' = C6H3-2,6-(C6H3-2,6-i-Pr2)2). In accordance with the theor. predictions by Nagase and Takagi, very small amts. of energy (∼5 kcal mol-1) sep. structural isomers of distannynes that have large differences in their bonding parameters. [on SciFinder(R)]
Seiten (von - bis)11366-11367
FachzeitschriftJournal of the American Chemical Society
PublikationsstatusVeröffentlicht - 2006


  • potassium redn dimerization chlorostannyl terphenylsilane
  • crystal structure distannane bis terphenylsilane
  • mol structure distannane bis terphenylsilane

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