Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Zhurnal Neorganicheskoi Khimii called Cis-bis(pyridine)dichloro derivatives of platinum(IV), Author is Chernyaev, I. I.; Zheligovskaya, N. N.; Bavina, T. V., which mentions a compound: 15227-42-6, SMILESS is [Cl-][Pt+2]([N]1=CC=CC=C1)([Cl-])[N]2=CC=CC=C2, Molecular C10H10Cl2N2Pt, Reference of cis-Dichlorobis(pyridine)platinum(II).
The complexes Pt(py)2Cl2XNO2 (X = Cl-, Br-) and Pt(py)2Cl2(OH)NO2 were precipitated by adding 5-10 ml. H2O to mixtures of equivalent amounts of Pt(py)2Cl2(NO2)NO3 (I) and KCl, KBr, or KOH, resp. I reacts with KI to give a mixture of Pt(py)2Cl2I2 and Pt(py)2Cl2INO2. Chlorination of Pt(py)2Cl2 yields [Pt(py)2Cl2]Cl2. [Pt(py)2Cl2][Pt(py)2Cl2(OH)2] was obtained from Pt(py)2Cl2 and 10% aqueous H2O2 at room temperature after standing for 24 hrs. Individual species were identified by x-ray diffraction tests. The aqueous solutions of Pt(py)2Cl2XNO2 undergo hydrolysis according to: Pt(py)2Cl2XNO2 + H2O ⇌ [Pt(py)2Cl2X(H2O)]+ + NO2-, whereas the aqueous solutions of Pt(py)2Cl2(OH)2 and [Pt(py)2Cl2]Cl2 are considerably more stable. Solutions of Pt(py)2Cl2Br2 partially decompose in light to Pt(py)2Cl2, HBrO, and HBr, resp.
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