The three direction cosines defining the XH bond vector within the diffusion frame are

Let the set of geometric parameters be

(15.112) |

and the set of orientational parameters be the Euler angles

(15.113) |

The five weights *c*_{i} in the correlation function of the Brownian rotational diffusion of an ellipsoid (15.132) are

where

d |
= 3δ_{x}^{4} + δ_{y}^{4} + δ_{z}^{4} - 1, |
(15.115) |

e |
= (1 + 3 | (15.116) |

The factor is defined as

The relax user manual (PDF), created 2016-10-28.