w in a high boiling non coordinating solvent ode the reactions times were 1 30 sec 2 1 min 3 3 min and 4 7 min fig4 c shows temperature and pressure profiles of the reaction consisting of the high boiling ode non coordinating solvent preparation of ingap in decane the reaction stoichiometry and method in decane is substantially identical to the reaction in ode the preparation of the cations consisted of placing 710 u03bcmol indium iii acetate and 74 1 u03bcmol of gallium iii 2 4 pentanedionate and 2 36 mmol hexadecanoic acid in a three neck flask the cations in ga were prepared in the absence of the non coordinating solvent due to its low boiling point 174 u00b0 c this was achieved by heating the salts to 150 u00b0 c under reduced pressure the melt was clear and colorless and was backfilled with ar four times at this temperature the reactants were allowed to cool to room temperature at which time 50 0 ml of decane was injected into flask under inert conditions the temperature was raised to 50 u00b0 c to afford a clear and colorless solution at which time 393 u03bcmol of tris trimethylsilyl phosphine was injected the solution slowly turned pale yellow over a 30 min period 5 ml of the stock solution was placed in microwave reaction tubes and immediately placed in the microwave chamber for various reaction times from 30 sec to 7 min at 280 u00b0 c with a stable power at 280 w by active cooling the ramping and cooling parameters were identical to the ingap prepared in octadecene sample quality for all reactions was monitored by absorption spectroscopy pl and pxrd fig4 b illustrates the growth characteristics of ingap at 280 u00b0 c and 280 w in.