Vinylmercury Compounds

Abstract

Divinylquecksilber wurde durch Behandlung von Quecksilber (II) -chlorid oder bromid mit einem Überschuß von Vinylmagnesiumbromid dargestellt. Durch verdünnte Schwefelsäure wird die Vinylgruppe vom Divinylquecksilber als Äthylen abgespalten. Die Reaktion von Quecksilber (II) -halogeniden mit Vinylgrignard-Verbindungen in einem Verhältnis 1: 1 gibt die Verbindungen CH2: CHHgX (X=Cl, Br, J). Die Vinylquecksilberhalogenide werden durch Behandlung mit Äthyl- oder Phenyl-Grignardverbindungen in die gemischten Verbindungen CH2: CHHgR (R=C2H5, C6H5) übergeführt.

Vinylmercury Hydrides: Synthesis and Spectroscopic Characterization

“…Tributylstannane (Bu 3SnH), 4 methyl-(1), 5 ethenyl-(2a), 6 1-methylethenyl-(2b), 1-propenylmercury chlorides (2c) 7 and divinylmercury (3a-c) 8 were prepared as previously reported.…”

“…13 -c). 8 In a 250 mL three-necked flask, the vinylmagnesium halide (0.1 mol) in THF (100 mL) was prepared as described above. The solution was cooled in an ice bath and a solution of HgCl 2 (13 g, 48 mmol) in dry THF (20 mL) was then slowly added.…”

“…Di-1-propenylmercury (3c). 8 Yield: 85% (mixture of (Z,Z), (Z,E), and (E,E) compounds in a 6:2:1 ratio). bp 0.2: 39 °C.…”

Experimental and Theoretical Studies of Bis(perfluorovinyl)mercury, Hg(CF=CF2)2: Synthesis, Characterization, and Structure in the Gaseous and Crystalline Phases

“…Metal complexes containing the perfluorovinyl (1,1,2-trifluoroethenyl) group, CFCF 2 , are a case in point; no structural data have been published despite the first examples of such materials being reported in the 1960s . By comparison structural data exist for a wide range of vinyl-containing compounds of main-group and transition-metal elements, and combined structural and theoretical modeling studies of divinylmercury and vinylmercury hydrides have been reported.…”

Selective Hydrodefluorination of Hexafluoropropene to Industrially Relevant Hydrofluoroolefins

“…Substituent effects on the regioselectivity of alkene hydroboration are well understood. [20][21][22] Expanding on the work of Stone, 13,23 Brown and co-workers have demonstrated previously that trifluoropropene reacts with HBX 2 (X = Cl, Br, H) to give primarily Markovnikov substitution products with the selectivity being sensitive to the number of halogen ligands on the borane and ranging from 7:1 to >9:1. 12 Similarly, vinyl chloride has been proposed to react with BH 3 by Markovnikov addition.…”