cis-[(4R,5R)-4,5-Bis­(amino­methyl)-2,2-di­methyl-1,3-dioxolane-N,N′](malonato-O,O′)­platinum(II), an anticancer agent

In the title compound, [Pt(C₃H₂O₄)(C₇H₁₆N₂O₂)], the Pt atom is coordinated to two O and two N atoms in a square-planar arrangement. The two independent mol­ecules, which have very similar structures, are approximately related by pseudo-twofold screw-axis symmetry. The six-membered chelate ring in the leaving ligand assumes a conformation intermediate between the half-chair and boat forms. The seven-membered ring in the carrier ligand assumes a twist-chair conformation and the oxolane ring assumes an envelope conformation. The crystal packing consists of extensive hydrogen-bonding networks which form two-dimensional molecular layers, and there are weak van der Waals interactions between these layers.