torsion angle

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torsion angle

the angle between the axes of any two different portions of long bones, such as between the head and neck of the femur and its long axis.
References in periodicals archive ?
The decrease in the dihedral angles between the two adjacent subunits induced by the presence of [pi]-spacers groups is in the order of PFEBT > PFVBT > PFDTBT > PFBT, which increases the effective conjugation degree.
We calculated the structural characteristics of dihedral angle, molecular volume, molecular surface area, p[K.
For HL cytosol, SULT1A1*1, and SULT1A1*2, we found no significant correlation between dihedral angle, molecular surface area, molecular surface volume, log P, log D at pH 7.
The key feature of the C-TunePhos family of ligands is their tunable dihedral angle to optimize enantioselectivity that result in high catalytic turnover activities.
As a result, the centroid-Zr-centroid angle ([alpha] in Scheme 1) is increased slightly, while the dihedral angle [beta] is greatly increased (Scheme 1).
The compound 1 of smaller dihedral angle [alpha] (larger angle [beta]) showed better comonomer reactivity than the compound 2.
Stereochemical evaluation of backbone Psi and Phi dihedral angles revealed that 78.
The difficulty is caused by overlap of van der Waals radii and repulsion before the two ends of a chain may become joined and, in the ring, by repulsions between transannular hydrogens and by unfavorable dihedral angles.