27204
In this work , the gas phase [ M , C , 2H ] + ( M = Ta , W , Ir , Pt ) products are investigated by infrared multiple - photon dissociation ( IR - MPD ) spectroscopy using the Free Electron Laser for IntraCavity Experiments ( FELICE ) .
 C, 2H, Ta, W, Ir, Pt
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 C, 2H, Ta, W, Ir, Pt