Category: category_overview
Data type: null
Examples:
loop_ _valence_param_atom_1 _valence_param_atom_1_valence _valence_param_atom_2 _valence_param_atom_2_valence _valence_param_Ro _valence_param_B _valence_param_ref_id _valence_param_details Cu 2 O -2 1.679 0.37 a . Cu 2 O -2 1.649 0.37 j . Cu 2 N -3 1.64 0.37 m '2-coordinate N' Cu 2 N -3 1.76 0.37 m '3-coordinate N' loop_ _valence_ref_id _valence_ref_reference a 'Brown & Altermatt (1985), Acta Cryst. B41, 244-247' j 'Liu & Thorp (1993), Inorg. Chem. 32, 4102-4205' m 'See, Krause & Strub (1998), Inorg. Chem. 37, 5369-5375'
Example 1 - a bond valence parameter list with accompanying references.
Data items in the VALENCE_PARAM category define the parameters used for calculating bond valences from bond lengths. In addition to the parameters, a pointer is given to the reference (in VALENCE_REF) where the parameters have been published.