Four micro states of Fe-CO with 3d.-4s and 3d6-3db electronsspin-paired or unpaired are examined to investigate the influence of pairingversus unpairing mechani
LaC2+, LaC22+, LaC3 and teC3- clusters have been studied using B3LYP densityfunctional method. Four isomers with C2v, Cs, C∞v and D∞h Symmetry were presented