Observation of New Neutron Resonances in $$^{17,19}\mathrm{C}$$

High-lying isolated neutron resonances have been observed in \(^{17,19}\mathrm{C}\). Analyses of the decay properties utilizing shell-model calculations suggest that they could be interpreted as possible variants of proton core excited states. The spins of these states are likely to be originating from anti-parallel coupling of spins of the \(d_{5/2}\) neutron and the proton \(2^+\) state in the assumed respective core nuclei, \(^{16,18}\mathrm{C}\).