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- W2987816963 abstract "The transient molecular species CN2 (CNN, NCN, c(yclic)-CN2) and CP2 (CPP, PCP, c(yclic)-CP2), along with the isoelectronic to CNN and isovalent to CPP, CCO, have been studied theoretically through the ab initio methodologies multireference configuration interaction (MRCI) and RCCSD(T) coupled with augmented correlation-consistent quintuple and sextuple basis sets. For the CNN, NCN, and c-CN2 molecules, the examined states are [X̃3Σ–, ã1Δ, b̃1Σ+, Ã3Π, and c̃1Π], X̃3Σg–, and X̃1A1, respectively. The analogous phosphorous system CPP has been studied theoretically for the first time. Our results show that the symmetries 3Σ–, 1Δ, and 1Σ+ are not stationary states; thence, the ground state of CPP is of 3Π symmetry and of similar electronic structure to that of the Ã3Π state of CNN. For most of the symmetries studied, we have constructed fully optimized potential energy profiles or “cuts” through the corresponding surfaces at the MRCI level of theory in an effort to follow the (valence) electronic distributions from the “selected” adiabatic species to equilibrium. Our numerical results are in excellent agreement with existing experimental data and previous, although limited, high-level ab initio calculations. Finally, it should be said that some of our findings like dissociation energies, permanent electric dipole moments, and bonding considerations are addressed for the first time." @default.
- W2987816963 created "2019-11-22" @default.
- W2987816963 creator A5028054457 @default.
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- W2987816963 date "2019-10-31" @default.
- W2987816963 modified "2023-10-18" @default.
- W2987816963 title "Electronic Structure and Bonding of the Fastidious Species CN<sub>2</sub> and CP<sub>2</sub>: A First-Principles Study" @default.
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- W2987816963 doi "https://doi.org/10.1021/acs.jpca.9b09084" @default.
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