The Fourier transform microwave spectrum of YC2 (X̃2A1) and its 13C isotopologues has been measured in the 10-57 GHz range, the first FTMW study of a metal dicarbide species. The molecule was created from yttrium vapor and CH4 in argon in a supersonic jet with a discharge-assisted laser ablation source (DALAS). Rotational, fine structure, and Y and 13C hyperfine constants were determined for each isotopologue. The calculated rm(1) structure is r(Y-C) = 2.187(4) Å, r(C-C) = 1.270(4) Å, and θ(C-Y-C) = 33.74(7)°. The hyperfine parameters indicate that the unpaired electron resides principally in an sd hybridized orbital on the yttrium nucleus.
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Physics and Astronomy(all)