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International
Tables for Crystallography Volume G Definition and exchange of crystallographic data Edited by J. R. Hester and B. McMahon © International Union of Crystallography 2026 |
International Tables for Crystallography (2026). Vol. G. Early view chapter
https://doi.org/10.1107/97809553602060001011 Chapter 4.2 Core dictionary (coreCIF) |
Core dictionary version 3.3.0
_valence_param.Ro
Name:_valence_param.Ro
Alias:
_valence_param_Ro
Definition:
The bond-valence parameter Ro used in the expression
s = exp[(Ro - R)/B], where s is the valence of a bond of length R.
Type: Real
Units: angstroms
The permitted range is 0.0 → infinity
Category:
valence_param
