Organometallic Polymers of Germanium, Tin and Lead

Abstract

Scope and Limitations Organometallic Polymers Containing Tin and Germanium in the Backbone Polymer‐Supported Organotin and Organogermanium Compounds Coordination Polymers of Organotin and Organolead Compounds

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

“…The synthesis and characterization of catenated heavier group 14 element compounds have attracted attention in recent years [1][2][3][4][5]. However, contrary to silicon and germanium, there are limitations for tin and lead associated with the significant decrease in element-element bond energy.…”

“…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]. Complete structural characterizations, however, are missing due to the very low solubility and sensitivity of all compounds reported.…”

“…Recently, conventional salt metathesis reactions have been employed for synthesis of neutral distannylstannylene species Sn(SnAr 3 ) 2 (Ar = C 6 H 3 -2,6-(O i Pr) 2 ) [20] and 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 ) [21], bearing a divalent tin atom bonded to two triarylstannyl groups. In both cases, the catenation was implemented by a stannyl lithium derivative LiSnAr 3 or LiSnPh 2 Ar*, respectively.…”