Zur struktur von bis(trimethylsilyl)quecksilber

The Synthesis and Molecular Structure of the First Two-Coordinate, Dinuclear σ-Bonded Mercury(I) RHgHgR Compound

“…[17] The (Me 3 SiMe 2 Si) 3 SiHg fragments in 1 have regular bond lengths and angles. The Hg ± Si distance of 248.5(1) pm in 1 is similar to that in (Me 3 Si) 2 Hg (250 pm), [18] indicating the absence of significant steric repulsions between the six Me 3 SiMe 2 Si groups or of strong electronic interactions with the Hg I ± Hg I bond.…”

Energy analysis of metal–metal bonding in [RM–MR] (M=Zn, Cd, Hg; R=CH3, SiH3, GeH3, C5H5, C5Me5)

“…1 [35]. It is important to note that the Cd-Cd bond distances are longer than the Hg-Hg bond distances, although the radii of both Cd and Hg are almost same.…”

Organosilanes

“…Hydrogen chloride will also increase the yield o f phenylchlorosilanes by suppressing the reactions that lead to the formation o f carbon which deactivates the contact mass, while hydrogen inhibits side reactions leading to chlorinated biphenyls. Fluorosilanes can be prepared conveniently at room temperature using a palladium-carbon catalyst, or b y heating the hydride with antimony trifluoride (equations [18][19][20][21]. Isopropylmagnesium chloride only substitutes two chlorine atoms and the more reactive alkyllithium i s needed to replace the third (equation 15).…”

“…58 The use o f aluminium halides will reverse the above series, aluminium iodide going the f u l l length o f the series in one step. 61 The silanes undergo base-catalysed hydrolysis increasingly slowly i n the order (17), (18), (19) and (20). The lattice energies o f aluminium oxide and fluoride are sufficient to offset the strength o f the silicon-oxygen and silicon-fluorine bonds.…”

“…The most important laboratory method, comprehensively surveyed, 19 i n v o l v e s the reaction o f an organometallic carbon nucleophile such as a Grignard reagent or an organolithium compound with chloro-or alkoxy-silanes. The most important laboratory method, comprehensively surveyed, 19 i n v o l v e s the reaction o f an organometallic carbon nucleophile such as a Grignard reagent or an organolithium compound with chloro-or alkoxy-silanes.…”