P-31 chemical shift anisotropy and structure of thiophosphates in RbTiPS5

In the course of studying quaternary transition metal thiophosphate compoun ds, we applied P-31 NMR spectroscopic methods to RbTiPS5. NMR peak assignme nt to a specific phosphorous site in the compound brought our attention to the systematic procedure of P-31 peak assignment for thiophosphates and ort hophosphates. In this work, we correlate P-31 chemical shift parameters wit h structures of PS4 units in RbTiPS5. The possibility of an empirical metho d to assign the P-31 peaks using average P-S bond lengths and average angle S-P-S deviations from 109.5 degrees (Delta angle S-P-S) is discussed.