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- W4384283402 abstract "Abstract Efforts over 40 yr still leave the source of astronomical infrared emission bands largely unidentified. Here, we report the first laboratory infrared (6–25 μ m) spectra of gas-phase fullerene-metal complexes, [C 60 -Metal] + (Metal = Fe, V) and show with density functional theory calculations that complexes of C 60 with cosmically abundant metals, including Li, Na, K, Mg, Ca, Al, V, and Fe, all have similar spectral patterns. Comparison with observational infrared spectra from several fullerene-rich planetary nebulae demonstrates a strong positive linear cross-correlation. The infrared features of [C 60 -Metal] + coincide with four bands attributed earlier to neutral C 60 bands and in addition also with several bands unexplained to date. Abundance and collision theory estimates indicate that [C 60 -Metal] + could plausibly form and survive in astrophysical environments. Hence, [C 60 -Metal] + are proposed as promising carriers, in supplement to C 60 , of observational bands, potentially representing the largest molecular species in space other than C 60 , C 60 + , and C 70 ." @default.
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- W4384283402 date "2023-07-01" @default.
- W4384283402 modified "2023-10-12" @default.
- W4384283402 title "Buckyball-metal Complexes as Potential Carriers of Astronomical Unidentified Infrared Emission Bands" @default.
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- W4384283402 doi "https://doi.org/10.3847/1538-4357/accf1b" @default.
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