31. Infrared spectroscopy has been used to obtain information about the different conformations of the methanium ion.32. Infrared Spectroscopy is also used in gas leak detection devices such as the DP-IR and EyeCGAs.33. He had utilized several experimental techniques, including X-ray and neutron diffraction, infrared spectroscopy , and M�ssbauer spectroscopy. 34. The technique is called Fourier transform infrared spectroscopy . 35. Infrared spectroscopy yields similar, but complementary, information.36. NMR and infrared spectroscopy ) are better at determining the structural features and identity of unknown compounds 37. Gas-phase infrared spectroscopy by Yeh and others ( 1989 ) has shown that both forms are stable. 38. Brugger, et al . ( 1997 ) used infrared spectroscopy to measure water content in Rom�ite crystals. 39. Infrared spectroscopy suggests the electronic structure is a zwitterion rather than a biradical as some had proposed.40. In 1975 its structure was descripted in base of mass spectrometry, infrared spectroscopy and nuclear magnetic resonance.
