Novel triphenyltin substituted derivatives of heavier alkaline earth metals

Monoanionic Tin Oligomers Featuring Sn–Sn or Sn–Pb Bonds: Synthesis and Characterization of a Tris(Triheteroarylstannyl)Stannate and -Plumbate

“…The Sn-Sn bond lengths range from 2.8127(7) to 2.8217(6) Å and lie well within the previously known range (2.811-2.836 Å) for complexes of the [Sn(SnPh 3 ) 3 ] -anion [16][17][18][19] but are considerably shorter than those found for the distannylstannylenes Sn(SnAr 3 ) 2 (Ar = C 6 H 3 -2,6-(O i Pr) 2 ) (2.86 Å) [20] as well as Sn(SnPh 2 Ar*) 2 (Ar* = C 6 H 3 -2,6-(Trip) 2 , Trip = C 6 H 2 -2,4,6-i Pr 3 ) (2.96 Å) [21]). The geometry at Sn(2), whose interligand angles vary from 93.8(2)˝to 132.5(2)˝, is strikingly distorted from idealized tetrahedral geometry.…”

“…It has been shown that reactions of lead(II) halides with Grignard reagents involved disproportionation processes leading to plumbates of type [MgBr(THF) 5 3 ] (Bp = 4-Biphenyl) [12]. The formation of closely related anions [Sn(SnR 3 ) 3 ]´(R = Me or Ph) was found as part of decomposition of corresponding stannyl anions in the presence of distannanes [13][14][15][16]. Further rare investigations included the reduction reaction of SnPh 4 with elemental lithium in liquid ammonia to give [Li(NH 3 ) 4 ][Sn(SnPh 3 ) 3 ] [17] or reactions of the organotin chlorides SnPh 2 Cl 2 as well as SnMe 3 Cl with lanthanoid metals, yielding complexes [Yb(DME) 3 Cl] 2 [Sn(SnPh 3 ) 3 ] 2 [18] and [Ln(THF) 4 {Sn(SnMe 3 ) 3 } 2 ] (Ln = Sm, Yb) [19].…”

η3‐Allylkoordination an Zinn(II) – Reaktivität gegenüber Alkinen und Benzonitril

“…[8] Bei der Reaktion von Benzonitril mit der [18] Dreifach-koordiniertes Zinn(II) führt zu einer chemischen Verschiebung des 119 Sn-Kerns von d = À48 ppm, die mit der von [SnPh 3 ] À bei d = À98.4 ppm verglichen werden kann. [19] Die NH-Protonen konnten einem breiten Singulett bei d = 5.80 ppm zugeordnet werden, das zu den 1 H-NMR-Verschiebungen der NH-Protonen der oben erwähnten Übergansmetallkomplexe passt. Die anderen Protonen des 16-gliedrigen Rings weisen, wie für ein delokalisiertes p-System erwartet, chemische Verschiebungen von d = 6.46 (CH-(CH) 2 )u nd 6.49 ppm (CH-(CH) 2 )a uf.M ithilfe von zweidimensionaler 15 N-1 H-HSQC-NMR-Spektroskopie wurde die 15 N-NMR-chemische Verschiebung bei d = 182 ppm ( 1 J Sn,N = 165 Hz) gefunden.…”

Magnesium and chlorostannanes—building blocks for novel tinmodified silanes

“…Insertion reactions of alkaline earth metals into tin Á/ tin bonds are well known from our own work as well as from literature (Eq. (2)) [5,6].…”