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Akiko Furuhashi, Isao Ono, Akira Ouchi, Akira Yamasaki, Crystal and Molecular Structure of [2-(2-Benzoxazolyl)phenolatotetrachloroplatinum]·[2-(2-Benzoxazolyl)phenol]·Ethanol, [PtCl4-(C13H8O2N)]·(C13H9O2N)·C2H5OH: Possibly a Stable New Pentavalent Platinum Complex, Bulletin of the Chemical Society of Japan, Volume 64, Issue 1, January 1991, Pages 149–153, https://doi.org/10.1246/bcsj.64.149
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Abstract
The crystal and the molecular structures of the title complex were determined by means of the single-crystal X-ray diffraction method. The crystal of PtC28H23O5N2Cl4, F. W. 804.40, (black-violet in color) is monoclinic, with the space group of P21⁄a, a=18.293(4), b=9.682(2), c=15.797(3) Å, β=96.55(2)°, U=2779.6(9) Å3, Z=4, Dm=1.90, Dx=1.92 g cm−3, and μ (Mo Kα)=57.37 cm−1. The platinum atom is in a hexa-coordinated octahedral geometry, where one 2-(2-benzoxazolyl)phenolate (bxp−) ion is chelated with its N and phenolato O atoms. The bxp− ligand as well as the free Hbxp molecule are both approximately planar, and their planes are approximately in parallel: They are arranged alternately and are laid roughly along the a-axis. Although the overlappling areas of the neighboring rings are only 23 and 13% respectively of the whole ring area, the interplane distances are 3.42 and 3.49 Å.
