title: The crystal structure and absolute configuration of the antitumor platinum complex trans(OH)-Pt(OH)2(malonato)(1R,2R-cyclohexanediamine).
abstract: The absolute configuration of the anti-tumor complex trans(OH)-Pt(OH)2(malonato)(1R,2R-cyclohexanediamine) was determined by X-ray anomalous scattering technique. The final unit cell was monoclinic, space group P2(1) with a = 9.142 A, b = 7.788 A, c = 11.946 A, beta = 96.48 degrees, Z = 2. The crystal structure was determined by direct method and difference Fourier synthesis, and refined to R = 0.025 and Rw = 0.033 based on 2768 independent reflections. The platinum atom has roughly octahedral coordination. The cyclohexane ring has the expected chair configuration, with two amino groups in equatorial positions while the malonato ligand, in contrast, shows a boat conformation for six membered Pt O-C-C-C-O ring.
authors.affiliation: Faculty of Pharmaceutical Sciences, Kumamoto University, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Goto
authors.forename: J
authors.initials: J
authors.lastname: Hirose
authors.forename: M
authors.initials: M
authors.lastname: Noji
authors.forename: K I
authors.initials: KI
authors.lastname: Lee
authors.forename: R
authors.initials: R
authors.lastname: Saito
authors.forename: Y
authors.initials: Y
authors.lastname: Kidani
mesh_terms: D000970:Antineoplastic Agents / Q000737:chemistry*; D008968:Molecular Conformation; D015394:Molecular Structure; D009944:Organoplatinum Compounds / Q000737:chemistry*; D013237:Stereoisomerism; D014961:X-Ray Diffraction
chemical_list: D000970:Antineoplastic Agents; D009944:Organoplatinum Compounds; C076710:hydroxy-platinum dihydroxy(malonato)cyclohexanediamine