The title compound is orthorhombic, space group Pn21a, with a 0.9075(4), b 1.0247(4), and c 1.1394(5) nm; Z = 4. The structure was solved by Patterson and Fourier techniques and refined by least-squares to R = 0.0706. The U-B force field was used in a normal coordinate anal. The calculated frequencies agree well with the observed values, with average difference 6.67 cm-1 between them. The frequencies were assigned in terms of potential energy distributions among force constants The rationality and the reliability of the result are discussed.

Key words: CRYSTAL STRUCTURE DETERMINATION, CYCLOPROPANE P, PLATINUM COMPLEX, VIBRATIONAL SPECTRA, LEAST SQUARE METHODS, ETHANEDIAMINE P, NORMAL COORDINATE ANALYSIS