Stable Doubly Bonded Compounds of Germanium and Tin

Synthetic, Structural, and Physical Aspects of Organo-Oligogermanes

“…In addition to the aforementioned linear systems, the chemistry of the cyclic trigermane (Mes 2 Ge) 3 has also been extensively investigated and it has been demonstrated that upon photolysis this species behaves as both a digermene and a germylene. [52][53][54][55][56][57][58][59][60][61][62][63][64][65][66] However, in contrast to the linear and cyclic oligogermanes the corresponding branched systems are relatively obscure. Prior to 2008, only a handful of these materials had been reported, including (Ph 3 Ge) 3 GeH, [72] (Ph 3 Ge) 3 GeMe, [72] (PhCl 2 Ge) 3 GePh, [73] (PhMe 2 Ge) 3 -GePh, [73] and (Ph(X) 2 Ge) 3 GePh (X = MeO, MeS, Me 2 N, Et 2 P).…”

Pyridine derived N-heterocyclic germylenes: A density functional perspective

“…In 1960s, organometallic chemistry encountered the start point of a series of revolutionary studies when the old idea of the unstable double bonds between heavier main group elements was broken down [1][2][3][4]. In this way, the valuable studies directed by Satgé introduced first transient intermediates having germanium doubly bonded to nitrogen (germanimines) in 1978 [5,6].…”

Reactions of cyclotrigermane and germylenes with carbonyl compounds: Cycloadducts and oligomers

“…These transient species were trapped by various reagents (protic species and unsaturated compounds, e.g., ketones, phenylacetylene, sulfur, selenium, diazomethane, etc.) in high yields [1,2].…”