Mercurials germyl

In another copper-mediated carbene transfer reaction, diazoester 222 has been decomposed in the presence of bis(triethylsilyl- or -germyl)mercury (equation 72) it was assumed that the obtained ketenes 223 result from the insertion of ethoxycarbonyl(trimethylsilyl)carbene into a Hg-element bond followed by a cyclic fragmentation process110. 

Similarly, from a mixed germyl(stannyl)mercury compound, the tetrametallic complex (CgF5)3SnHgM(PPh3)2Ge(C6F5)3 was obtained as a mixture of cis and trans isomers345. 

Formation of Germanium-Transition and Inner Transition Metal Bond 271 5.8.4.S. Bis(germyl)mercury or -cadmium [NOTE highly toxic]... 

S.8.4.5. from Bls(germyl)mercury or -cadmium [NOTE These substances are highly toxic and must be handled with care.]... 

Germyl bromide reacts with bis(trimethylgermyl)mercury to exchange either one or both MejGe groups ... 

Diazo(trialkylsilyl)acetates 1 can be prepared conveniently from an alkyl diazoacetate and a trialkylsilyltriflate in the presence of a tertiary amine (path A). Furthermore, metalation of ethyl diazoacetate with butyllithium at — 110 °C, followed by addition of chlorotrimethylsilane provides ethyl diazo(trimethylsilyl)acetate. Ethyl diazo(trimethylsilyl)acetate and the corresponding trimethylgermyl- and trimethylstannyl- substituted diazoacetate have been prepared from mercury bis(ethyl diazoacetate) and bis(trimethylsilyl-, germyl- or stannyl)sulfide (path B). Ethyl diazo(trimethylgermyl)- and ethyl diazo(trimethylstannyl)acetate were obtained from ethyl diazoacetate and diethylaminotrimethyltin or -germanium (path C). Similarly, the ethyl (trimethylplumbyl)diazoacetate was obtained from bis(trimethylsilyl)aminotrimethyl-lead. 2... 

The synthesis is carried out in a 500-ml., single-necked, round-bottomed flask which is connected to a standard vacuum line by means of a stopcock adapter. The stopcock adapter is important, since it allows for the easy attachment and removal of the reaction vessel from the vacuum line without exposing the contents of the reactor to air. The vacuum line must be equipped with a mercury manometer in order to measure the pressure of PH3 during the preparation of the Li[Al(PH2)4] solution. A conventional vacuum line with greased stopcocks is satisfactory. However, germyl-phosphine does attack conventional stopcock lubricants so a greaseless system is preferred if available. 

The preparation of tris(pentafluorophenyl)-silyI, -germyl, and -stannyl derivatives of cadmium and mercury has been described. Thus tris(penta-fluorophenyl)silane yields bis[tris(pentailuorophenyl)silyI]cadmium by the route ... 

Bromotris(pentafluorophenyl)tin and the germyl-mercury compound Et3Ge Hg Ge(C F8)3 react photochemically to yield a Ge-Hg Sn compound ... 

Vanadium.- Bis(germyl)mercury compounds oxidise (n-PhEt)2V e.g. 

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