(CN)2CO2C2H5(1-) in neat (no solvent, gas phase) High Pressure; react. in a pulsed ionization high-pressure mass spectrometer; not isolated, detected by high-pressure mass spectrometry;

MeONO CH4 carrier gas; deprotonation of HCN to CN(1-) by MeO(1-) formed from added trace of MeONO; pulsed high-pressure mass spectrometry;

in neat (no solvent, gas phase) High Pressure; react. in a pulsed ionization high-pressure mass spectrometer; not isolated, detected by high-pressure mass spectrometry;