Binuclear Pd(II) complexes with chiral ethylenediaminodioxime (H2L) and bis-α-thiooxime (H2L1), the derivative of monoterpenoid(+)-3-carene.: Crystal structures of [Pd2(H2L)Cl4] and [Pd2(H2L1)Cl4] • 3CDCl3

Diamagnetic Pd(II) complexes with the chiral ethylenediaminodioxime (H2L) and bis-alpha-thiooxime (H2L1), the derivatives of monoterpenoid (+)-3-carene, of the composition Pd-2(H2L)Cl-4 (I), Pd-2(H2L1)Cl-4 (II), and the solvate Pd-2(H2L1)Cl-4 center dot 3CDCl(3) (III) were synthesized. The crystal structures of complex I and solvate III were determined from X-ray diffraction data. The structures consist of acentric binuclear molecules with the coordination cores PdN2Cl2 (in I) and PdNSCl2 (in III) in the form of the distorted squares. In complex I, each I'd atom coordinates two N atoms of the tetradentate bridge-cyclic ligand H2L and two Cl atoms; in compound III, one N and one S atom of the tetradentate bridge-cyclic ligand H2L1, and 2 Cl atoms. The CDCl3 Molecules in compound III lie in the cavities formed by the molecules of complex II. In both structures, the PdCl2 fragments are in the trans-positions. The H-1 NMR spectra indicate that the structures of complexes I, II in solutions are similar to the structures of compounds I, III in the solid state.