The first application of samarium(II) diiodide for the formation of Group 14 element catenates: synthesis of tri- or poly-germanes and polystannanes

Abstract

Some Group 14 element catenates such as tri-or poly-germanes and polystannanes are synthesized by use of the one-electron reducing agent Smlz.

Organotin compounds bearing mesogenic sidechains: synthesis, X-ray structures and polymerisation chemistry

“…Synthetic methods for achieving relatively high molecular weight (R 2 Sn) n have evolved from conventional Wurtz reduction (R 2 SnCl 2 Á/Na) [3] to milder dehydrogenative coupling of R 2 SnH 2 monomers promoted by a variety of transition metal catalysts [2,6 Á/8]. Electrochemical methods [9] and reduction using SmI 2 have also been reported in recent years [10].…”

Hydrogermolysis reactions involving the α-germylated nitriles R3GeCH2CN (R=Ph, Pri, But) and germanium amides R3GeNMe2 (R=Pri, But) with Ph3GeH: Substituent-dependent reactivity and crystal structures of Pri3GeGePh3 and But3Ge[NHC(CH3)CHCN]

“…In the case of germanium, until recently existing methods for the synthesis of oligomeric systems have been complicated by low yields and/or the formation of mixtures of products . Improvements in this regard have been made by the use of SmI 2 to promote Ge-Ge bond formation [57,58], the insertion reactions of germylenes into germane Ge-H bonds [59], and use of the hydrogermolysis reaction for Ge-Ge bond formation [60].…”

Phthalocyanine dimer with a direct Si—Si linkage: A response to a recent work

“…The group 14 element compounds such as polysilanes, polygermanes and polystannanes have attracted increasing attention owing to their unique physical, chemical and optical properties [1][2][3].…”