Index

Core dictionary version 3.0.14

_atom_site_aniso.B_12

Definition:

   
     These are the standard anisotropic atomic displacement components
     in angstroms squared which appear in the structure factor term:

     T = exp{-1/4 sum~i~ [ sum~j~ (B^ij^ h~i~ h~j~ a*~i~ a*~j~) ] }

     h = the Miller indices
     a* = the reciprocal-space cell lengths
     The unique elements of the real symmetric matrix are entered by row.

     The IUCr Commission on Nomenclature recommends against the use
     of B for reporting atomic displacement parameters. U, being
     directly proportional to B, is preferred.

Type: Real

Units: angstrom_squared

Category:
atom_site_aniso