• stability
  • Il'in E.G. Parshakov A.S. Privalov V.I. Danilov V.V. Bodrin G.V. Goryunov E.I. Nifant'ev E.E., "Specifics of titanium tetrafluoride complexation with Ph2P(O)(CH2)2C(O)NMe2: The remarkable stability of the seven-membered chelate heterocycle TiOPCCCO and its conformational isomerism in solution", Dokl. (mathnet.ru)
  • stable
  • Like other large molecules and biopolymers, DNA often exists in multiple stable geometries (that is, it exhibits conformational isomerism) and configurational, quantum states which are close to each other in energy on the potential energy surface of the DNA molecule. (wikipedia.org)
  • bonds
  • Although the distinction is not always clear-cut, since certain bonds that are formally single bonds actually have double bond character that becomes apparent only when secondary resonance contributors are considered, like the C-N bonds of amides, for instance. (wikipedia.org)
  • alpha
  • Proline is the only proteinogenic amino acid with a secondary amine, in that the alpha-amino group is attached directly to the side chain, making the α carbon a direct substituent of the side chain. (wikipedia.org)