Two-state model of antiaromaticity: The triplet state. Is Hund's rule violated?

Keyphrases

• Alternating Structure 25%
• Antiaromatic Compounds 25%
• Antiaromaticity 100%
• Biradical 75%
• Bonding Structure 50%
• Computational Study 25%
• Cyclic Hydrocarbons 25%
• Cyclobutadiene 25%
• Cyclooctatetraene 25%
• Electron Pairing 25%
• Energy Difference 25%
• Even number 25%
• Exchange Resonance 25%
• Heptalene 25%
• Hund's Rule 100%
• Low-lying 50%
• Model Prediction 25%
• Monoanion 25%
• Pentalene 25%
• Resonance Hybrid 50%
• Resonance Stabilization 50%
• Ring Width 25%
• Singlet 100%
• Singlet State 50%
• Spectroscopic Observations 25%
• Symmetric Form 25%
• Symmetric Structure 25%
• Symmetry Property 25%
• Transition State 50%
• Triplet 100%
• Triplet Pairing 25%
• Triplet State 100%
• Two-state 25%
• Two-state Model 100%
• Valence Bond 50%

Chemistry

• Antiaromatic Compound 33%
• Antiaromaticity 100%
• Covalent Structure 33%
• Cyclic Hydrocarbon 33%
• Heptalene 33%
• Monoanion 33%
• Pentalene 33%
• Singlet State 66%
• Singlet State Transition 33%
• Transition State 33%
• Triplet State 100%