The canonical structure and 31P nuclear magnetic resonance properties of lnorganic thiophosphate
Abstract
The broad 31P n.m.r. signal of the dianion of inorganic thiophosphate is shown to be caused by slow proton transfer which is subject to general base catalysis; the trianion shows a narrow 31P n.m.r. signal allowing the 18O isotope shift to be measured and from which it is concluded that sulphur bears a single negative charge, the other two charges being shared by the three oxygen atoms.