Abstract
Abstract The structure of bis(cis-1,3-diaminocyclohexane) palladium(II) chloride has been determined from X-ray diffraction data collected by the counter method. The crystal is orthorhombic with space group Pnnm, a=17.728(5), b=6.418(4), c=6.914(2) Å, and Z=2. The crystal structure has been determined by Patterson and Fourier techniques and refined by a least-squares method to R=0.026 for 1151 independent reflections for which Fo2>3σ(Fo2). The Pd atom has a planar coordination of 4N atoms and the complex cation has a crystallographically imposed C2h symmetry, the two cis-1,3-diaminocyclohexane ligands being related to each other by a two fold axis. The six-membered chelate ring (Remark: Graphics omitted.) is of the envelope conformation. The structural features of the ligating cis-1,3-diaminocyclohexane have been described. The crystal of bis(cis-1,3-diaminocyclohexane)platinum(II) (orthorhombic, a=17.727(8), b=6.371(3), c=6.965(2) Å) was found to be isomorphous with that of the palladium analogue.
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