Natural abundance 43Ca NMR study of calcium-containing organic solids: A model study for Ca-binding biomaterials

Natural abundance 43Ca NMR data of calcium-containing organic solids is reported that act as models for calcium sites in biomolecules. The 43Ca NMR interaction parameters indicate small electric field gradients and chemical shift range. A correlation of the 43Ca isotropic chemical shift with Ca-O distance is found.