Abstract

Complete three-dimensional X-ray crystal structure analyses have been carried out on both compounds by identical experimental and computational methods. Observations were collected at 120°± 5°K and the intensities corrected for absorption. Hydrogen atoms were not located. After anisotropic refinement by least-squares, R is 0·091 for the cis-isomer and 0·077 for the trans-isomer. The bond lengths, corrected for rotational oscillation are Pt–Cl = 2·33 ± 0·01 Å and Pt–N = 2·01 ± 0·04 Å in the cis-compound, and Pt–Cl = 2·32 ± 0·01 Å and Pt–N = 2·05 ± 0·04 Å in the trans-compound. The only angle significantly different from 90° is Cl–Pt–Cl = 91·9°± 0·4° in the cis-compound.

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