AM_Cr(HP2O7)(NH3)3(H2O)2H2O_1 Formula: Cr P2 O9 N3 H18 Name: Cr(HP2O7)(NH3)3(H2O).2H2O Unit cell: 8.695 10.327 11.913 90.0 97.81 90.0 , V=1059.78 Space group: P121/C1 (14)

Haromy T P , Linck C F , Cleland W W , Sundaralingam M , Acta Crystallographica, Section C , 46 (1990) p.951-957, Structures of the meridional and facial isomers of triamminechromium, pyrophosphate dihydrate, Sample: (b), alpha,beta,beta -tridentate triammine(pyrophosphato), chromium(III)dihydrate dimer