CO-ORDINATED COPPER COMPOUNDS WITH PROPYLENEDIAMINE.

Literature shows that complex propylenediamine salts of copper were unknown. In our attempts to prepare tris-propylenediamine salts with a view to their resolution into optical isomers we have discovered bis-propylenediarnine salts which were not re­solvable. These salts are violet in colour, very soluble in water yielding beautiful violet coloured solutions. The d-tartrate, d-camphor sulphonate and nitronate have been prepared and their rotations measured