Reactions of some organogermanium(II) chlorides

Flexible and Versatile Pincer-Type PGeP and PSnP Ligand Frameworks

“…11.12 Generally, pincer-type ligands are an intensely investigated class of compounds as they often provide an excellent balance of stability and reactivity. 13 Given that heavier tetrelene ligands can also act as strong electron-donating ligands, [14][15][16][17][18] efforts have been made to develop novel pincer-type tetrelene ligands and to utilize them in combination with transition metals for various catalytic transformations. [19][20][21][22][23][24] However, so far they are limited to ECE or ENE systems (E = Si, Ge) and only very recently, the first phosphine-functionalized germylene and stannylene ligands and their applications have been reported.…”

Organosilicon and ‐germanium Hydrides in Catalyst‐Free Hydrometallation Reactions

“…Germanium in these hydrides can possess oxidation number +IV or +II. The compounds of the former type are relatively stable, but the latter require stabilisation with bulky substituents and/or other groups; however, they are usually more reactive. It has been shown that compounds containing germanium in oxidation state +II can be transformed into compounds containing germanium in oxidation state +IV with one or two Ge–H bonds .…”

Synthesis, Insertion Reactivity, and Transmetalation Reactions of the Lithium Complex [{2‐(6‐R‐Pyr)(Me3Si)}CHLi·OEt2]2 (R = H or Me)

“…[7,8] Furthermore, a series of derived pyridyl-1-azaallyl low-valent group 14 compounds were described. [9,10] The synthesis of [MCl 2 {N(SiMe 3 )-C(Ph)C-(H)(C 9 H 6 N-2)}] (M = Hf and Zr) from the reaction of MCl 4 with the quinolyl-1-azaallyllithium complex [Li{N-(SiMe 3 )C(Ph)C(H)(C 9 H 6 N-2)}] 2 was reported previously, [11] as well as the synthesis of Pd complexes containing the 1-azaallyl ligand of [{[N(R)C(tBu)CH] 2 C 5 H 3 N-2,6}{Li 2 (tmen)}] and [{[N(R)C(Ph)CH] 2 C 5 H 3 N-2,6}{Li-(tmen) 2 }]. [12] In this paper, we report the synthesis of dimeric [{2-(6-R-Pyr)(Me 3 Si)}CHLi·OEt 2 ] 2 [R = H (1a) or Me (1b)], in which two lithium atoms have different bonding modes in an asymmetric pattern, and their insertion products to form the corresponding pyridyl-1-azaallyllithium complexes [{2- (4).…”