The synthesis, characterization, and X-ray crystal structure of the yellow dimorph, [Pt(terpy)Cl]Cl · 2H2O, are reported. The yellow acicular crystals are monoclinic: space group P21/n, a = 6.908(3) Å, b = 17.06700(11) Å, c = 13. 8390(10) Å, b = 98.607(4)°, and Dcalc = 2.204 Mg m-3 for Z = 4. The cation consists of platinum coordinated to tridentate terpyridine ligand and to chloride ion. The coordination geometry is essentially square-planar with distortions arising from the constraints of the terpyridine ligand. Bond distances are within the acceptable limits of predicted values. The cations stack in a head-to-tail orientation with an intermolecular Pt--Pt distance of 3.39 Å.

The synthesis, characterization, and X-ray crystal structure of the yellow dimorph, [Pt(terpy)Cl]Cl · 2H2O, are reported. The yellow acicular crystals are monoclinic: space group P21/n, a = 6.908(3) Å, b = 17.06700(11) Å, c = 13. 8390(10) Å, b = 98.607(4)°, and Dcalc = 2.204 Mg m-3 for Z = 4. The cation consists of platinum coordinated to tridentate terpyridine ligand and to chloride ion. The coordination geometry is essentially square-planar with distortions arising from the constraints of the terpyridine ligand. Bond distances are within the acceptable limits of predicted values. The cations stack in a head-to-tail orientation with an intermolecular Pt--Pt distance of 3.39 Å.