The structures of the potassium and cyclohexylammonium salts of the ph
osphoglycolate trianion, 3K(+).C2H2O6P3-.2H(2)O and 3C(6)H(14)N(+).C2H
2O6P3-.3H(2)O, respectively, have been determined by X-ray analysis. T
he respective ester P-O bond lengths are 1.642 (2) and 1.628 (3) Angst
rom.