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Images of a mixture of Mn2(CO)10 or W(CO)6 soaked polystyrene beads suspended in water. (a) Transmitted IR light image of bead sample. (b) Fourier transform infrared (FTIR) absorption spectra of different beads, as indicated by pixel numbers. (c) False color FTIR absorption image. The W(CO)6 (1971 cm−1) absorption is mapped to red while the Mn2(CO)10 (2004 cm−1) is colored in cyan.
