Phosphine, germyl

The addition of bromine or iodine to Mes2Ge=PAr (Ar = 2,4,6-tri-/-butylphenyl) gave two major products the vicinal dihalide and the (halo-germyl)phosphine.59... 

Cleavage of Ge—P bonds in acyclic and cyclic germyl phosphines yields Ge—H-containing products, e.g. ... 

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. 

Ci2H27GeOP terf-butyl-pivaloyl-(trimethyl-germyl)-phosphine 131570-98-4 ... 

Germyl phosphine derivatives can be made by reactions analogous to (9.166), (9.169) through (9.172), or by the action of phosphine on compounds with Ge-N or Ge-Cl bonds (9.296, 9.297). Some germyl... 

If germyl phosphine is heated in oxygen, an eight-membered ring compound is obtained (9.308), and with water, phosphine is evolved (9.309). 

Double resonance has been used to measure SC Se) in Sn-Se (375, 400-402) and P-Se compounds (403, 404), silyl and germyl selenides, (404) and secondary phosphine selenides. (98, 174, 405) H- P, SeJ selective triple resonance was used (98, 174) for organophosphorus selenides where J( H - - Se) is effectively zero. Recently P- Sej pulsed FT experiments have been performed to measure SC Se) in [MePhP(Se)],CH2 (406) and several cyclodiphosphazane selenides. (407)... 

The reaction of germyl- or silyl-phosphines with biacetyl leads to cyclic products as well as acyclic derivatives derived from 1,1- and 1,2-addition (see Scheme 1). Condensation of hydrometal-phosphines (39) with biacetyl gives mono-insertion products which cyclize in the presence of HaPtCU into germa-or sila-dioxolan derivatives. 

Germyl- and silyl-phosphines add readily to one of the carbonyl groups of glyoxal to give unstable products which readily lose carbon monoxide, e.g. 

H. Schumann, Organo germyl, stannyl and plnmbyl phosphines, AWC, 8, 937, 1969. 

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