Π1←XΣ+1 band systems of jet-cooled ScCo and YCo

摘要: Rotationally resolved resonant two-photon ionization (R2PI) spectra of ScCo and YCo are reported. The measured reveal that these molecules possess ground electronic states (1)Sigma(+) symmetry, as previously found in the isoelectronic Cr(2) CrMo molecules. state rotational constants for B(0)(")=0.201 31(22) cm(-1) B(0) (")=0.120 96(10) cm(-1), corresponding to bond lengths r(0) (")=1.812 1(10) A (")=1.983 0(8) A, respectively. single band system, assigned a (1)Pi<--X transition, has been identified both In ScCo, (1)Pi is characterized by T(0)=15,428.8, omega(e)(')=246.7, omega(e)(')x(e)(')=0.73 cm(-1). YCo, T(0)=13 951.3, omega(e)(')=231.3, omega(e)(')x(e) (')=2.27 For hot bands originating from levels up v(")=3 observed, allowing vibrational omega(e)(")=369.8, omega(e)(")x(e)(")=1.47, Delta G(12)(")=365.7 be deduced. energy 2.45 eV onset predissociation congested vibronic spectrum. comparison chemical bonding related presented.