We report the 488 nm photoelectron spectra of the mass-selected Cr2H- and Cr2D- anions. The electron affinity of Cr2H is 1.474 ± 0.005 eV. Frequencies are reported for all three vibrational modes in both the neutral molecules and the anions, and their structures and bonding properties are discussed.
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We thankA shfaqB engalif or first makingC r,Hin thef low tubea nd obtainingt hei nitial data.G rad-uatef ellowships upportf or SMC from theE lmoreH . Northey Endowment is also gratefully acknowl-edgedT. his researchw ass upportedb y the NSF under PYI Grant CHE-8858373.