in N,N-dimethyl-formamide Sonication; glove box under N2; mixed, ultrasonication at 25+-5°C for 96h; centrifuged, washed (pentane or hexane), extd. (three times with pentane or hexane), evapd., recrystd. (hexane); elem. anal.;

in N,N-dimethyl-formamide Sonication; glove box under N2; mixed, ultrasonication at 25+/-5°C for 104h; centrifuged, washed (pentane or hexane), extd. (three times with pentane or hexane), evapd., recrystd. (hexane); elem. anal.;

1: tetrahydrofuran 2: toluene View Scheme