Assertion: citrate | /r/AtLocation | hydrated layers
Facets:
Source sentences:
text: To provide a model for such a composite structure, we explore, in detail, the characteristics of a double salt octacalcium phosphate-citrate (OCP-citrate), in which citrate resides in hydrated layers, bridging between apatitic layers; to our knowledge, we propose for the first time a quantitative structure for this material using a combination of solid-state NMR spectral parameters, powder X-ray diffraction data, and first principles electronic structure calculations.