The "symmetric" types of these interactions seem to violate the duet rule, and occur in high-pressure ice known as "Ice X." This is the main mechanism by which R-groups in DNA interact, and the spacing of them results in the 
The "symmetric" types of these interactions seem to violate the duet rule, and occur in high-pressure ice known as "Ice X." This is the main mechanism by which R-groups in DNA interact, and the spacing of them results in the alpha helix and beta pleated sheet. Water's high boiling point is due to the high ratio of these bonds to the low molecular mass. For 10 points, name this type of bond resulting from the dipole-dipole force between an electronegative atom and the namesake element bonded to nitrogen, oxygen, or fluorine.
The "symmetric" types of these interactions seem to violate the duet rule, and occur in high-pressure ice known as "Ice X.