High resolution 31P NMR study of octacalcium phosphate

Solid State Nucl Magn Reson. 2004 Sep;26(2):99-104. doi: 10.1016/j.ssnmr.2004.06.002.

Abstract

We have assigned the (31)P high-resolution spectrum of octacalcium phosphate by (31)P double quantum and HETCOR spectroscopy. The (31)P peaks at -0.2, 2.0, 3.3 and 3.7 ppm are assigned to P5/P6, P3, P2/P4 and P1, respectively. Our data reveal that substantial amount of the PO(4)(3-) groups at the P2 and P4 sites have been transformed to HPO(4)(2-) in our octacalcium phosphate sample.

Publication types

  • Comparative Study
  • Evaluation Study
  • Research Support, Non-U.S. Gov't
  • Validation Study

MeSH terms

  • Calcium Phosphates / analysis*
  • Calcium Phosphates / chemistry*
  • Crystallography / methods
  • Magnetic Resonance Spectroscopy / methods*
  • Molecular Conformation
  • Phosphorus Isotopes / chemistry*
  • Reproducibility of Results
  • Sensitivity and Specificity

Substances

  • Calcium Phosphates
  • Phosphorus Isotopes
  • octacalcium phosphate