22702-71-2Relevant articles and documents
Aryl Oligogermanes as Ligands for Transition Metal Complexes
Zaitsev, Kirill V.,Lam, Kevin,Tafeenko, Viktor A.,Korlyukov, Alexander A.,Poleshchuk, Oleg Kh.
, p. 4911 - 4924 (2018)
The ligand properties of a series of aryl oligogermanes R3Ge-GeAr3, 3–7 [Me3Ge-GePh3 (3), Me3Ge-Ge(pTol)3 (4), Ph3Ge-GePh3 (5), (C6F5)3Ge-GePh3 (6), Ph3Ge-GeMe2GePh3 (7)] for the synthesis of transition metal carbonyl complexes such as R3Ge-GeAr2(R′C6H4-η6)M(CO)3 (M = Cr, 3a–7a; M = Mo, 3b; M = W, 3c) were investigated. The target complexes were obtained in moderate yields using several different synthetic approaches. The physicochemical properties of these new derivatives were investigated by IR, UV/Vis, NMR spectroscopy, electrochemistry, and DFT calculations. The molecular structures of 3c, 4a, and 5a were studied by single-crystal X-ray diffraction analysis. A comparative analysis of donor and acceptor properties of aryl oligogermanes as ligands for transition metal carbonyl complexes is reported.
UEBER POLYGERMANE. XV. DARSTELLUNG VON PHENYLIERTEN TRIGERMANEN IN HMPT
Draeger, Martin,Simon, Dietolf
, p. 183 - 192 (1986)
The optimum conditions for the synthesis of the trigermanes Ge3Ph8 and Ge3Me2Ph6 according to R2GeCl2 + 2 Ph3GeAk (Ak = Li, K) in HMPT have been determined.The main difficulty is to repress a nucleophilic attack of Ph3Ge- at newly formed Ge-Ge bonds.The mass spectrum of Ge3Me2Ph6 shows rearrangements of the GePh3 and Ph/Me groups.The 13C NMR phenyl signals of di-, tri- and tetra-germanes are nearly identical.Ge3Ph8 and Ge4Ph10 transform to the plastically-crystalline state before melting (ΔH 45.3 and 54.9 kJ mol-1).The crystal structure of Ge3Me2Ph6 has been determined.The molecule has C2 symmetry (Ge-Ge 242.9(1) pm, Ge-Ge-Ge 120.3(1) deg).
