The e.s.r. spectrum of Ag(CO)3, a 2A1′ ground state molecule

Abstract

Ag(CO)₃ has been prepared by the reaction of carbon monoxide with silver atoms in a rotating cryostat at 77 K and its isotropic e.s.r. spectrum observed; in the case of ¹⁰⁷Ag(¹³CO)₃ in adamantane it consists of a doublet of quartets with a₁₀₇(1)=-566.5, a₁₃(3)= 19.2 G (1 G = 10^–4T), and g= 2.00086, which suggests a D_3th molecule with a ²A₁′ ground state and the unpaired electron located largely in the Ag 5s orbital.