42967-38-4

Upstream product

• 2816-39-9 hexaphenyldigermane 
• 76-03-9 trichloroacetic acid 

Downstream Products

• 37044-16-9 tetraphenyldigermanium dichloride 
• 13891-99-1 1,1,2,2-tetraphenyl 1,2-digermane 
• 13969-30-7 Octaphenyl-1,4-dioxa-2,3,5,6-tetragermacyclohexan 
• 96574-70-8 Octaphenyl-1,4-dithia-2,3,5,6-tetragermacyclohexan 
• 96574-71-9 (C₆H₅)8Ge₄OS 

Relevant academic research and scientific papers

Hydroalumination of Oligoalkynylgermanes and -digermanes – Reactions with Heterocumulenes by Al–C or Ge–C Bond Activation and Formation of a Hexazenedialuminum Complex

Hydroalumination of the dialkynylgermane Ph2Ge(C≡CtBu)2 (1) and the digermanes Phn(tBuC≡C)3–nGe–Ge(C≡CtBu)3–nPhn (2a: n = 2; 2b: n = 1) with two equivalents of H–AltBu2 or H–AlEt2 yielded the mixed Al/Ge compounds Ph2Ge[C(AltBu2)=CH-tBu]2 (3), [Ph2GeC(AltBu2)=CH-tBu]2 (4a), and [Ph2GeC(AlEt2)=CH-tBu]2 (4b). Reactions of 2b with both aluminum hydrides afforded inseparable mixtures of products. 3 reacted with heterocumulenes by retrohydroalumination. Phenyl isocyanate gave insertion of the C=N group into the resulting Ge–C(≡C–tBu) bond (5), whereas the NCS and NCN groups of phenyl isothiocyanate and a carbodiimide inserted into Al–Cvinyl bonds (6 and 7) with unaffected terminal Ge–C≡C–tBu moieties. The generation of 5 represents the first example of the insertion of a heterocumulene into a Ge–C bond, which may be favored by the activation of the isocyanate group by the Lewis acidic Al atom and the increased polarity of the N=C=O fragment as determined by NBO calculations. The reactions of the digermanes 4 with heterocumulenes were unselective and afforded inseparable mixtures. Treatment of 4a with the azide (4-tBu)C6H4CH2–N3 led interestingly to reductive coupling of two azide molecules, and the hexazene complex (tBuC6H4CH2N3–N3C6H4tBu)(AltBu2)2 (8) was isolated in moderate yield. Six nitrogen atoms form a dianionic chain, which coordinated two AltBu2 fragments by formation of two joint AlN4 heterocycles.

Structural, spectral, and electrochemical investigations of para-tolyl-substituted oligogermanes

The synthesis of four new oligogermanes containing para-tolyl-substituents has been achieved via the hydrogermolysis reaction, including the digermane Tol3GeGePh3, the trigermanes Tol3GeGePh2GeTol3 and Tol3GeGeTol2GeTol3, and the tetragermane Tol3GeGePh2GePh2GeTol3 (Tol?=?p-CH3C6H4). These four oligogermanes have been structurally characterized and their structures have been compared with those of their per-phenyl-substituted analogs. The digermane Tol3GeGePh3 exhibits an unusually short Ge-Ge bond distance of 2.408(1)?A?. The four para-tolyl-substituted oligogermanes have also been characterized by UV/visible spectroscopy and cyclic voltammetry. The expected red shift in the absorbance maximum with increasing catenation was observed for this series of compounds. Their cyclic voltammograms each contain n?-?1 irreversible oxidation waves (n?=?the number of Ge atoms), which is atypical since oligogermanes generally exhibit only one irreversible oxidation wave regardless of the degree of catenation.