A one-dimensional chloride-bridged PtII/PtIV mixed-valence complex with a 4-[(4-hydroxyphenyl)diazenyl]benzenesulfonate counter-ion

• Published in: Acta crystallographica. Section C, Crystal structure communications Vol. 71; no. 12; p. 1033
• Main Authors: Matsushita, Nobuyuki, Taira, Ayako
• Format: Journal Article
• Language: English
• Published: Chester Wiley Subscription Services, Inc 01.12.2015
• Subjects: Chemical bonds; Chemistry; Crystallography
• ISSN: 0108-2701; 1600-5759
• DOI: 10.1107/S2053229615019877

The title compound, catena-poly[[[bis(ethylenediamine-[kappa]2N,N')platinum(II)]- µ-chlorido-[bis(ethylenediamine)platinum(IV)]-µ-chlorido] tetrakis{4-[(4-hydroxyphenyl)diazenyl]benzenesulfonate} dihydrate], {[PtIIPtIVCl2(C2H8N2)4](HOC6H4N=NC6H4SO3)4·2H2O}n, has a linear chain structure composed of square-planar [Pt(en)2]2+ (en is ethylenediamine) and elongated octahedral trans-[PtCl2(en)2]2+ cations stacked alternately, bridged by Cl atoms, along the b axis. The Pt atoms are located on an inversion centre, while the Cl atoms are disordered over two sites and form a zigzag ...Cl--PtIV--Cl...PtII... chain, with a PtIV--Cl bond length of 2.3140(14)Å, an interatomic PtII...Cl distance of 3.5969(15)Å and a PtIV--Cl...PtII angle of 170.66(6)°. The structural parameter indicating the mixed-valence state of the Pt atom, expressed by [delta] = (PtIV--Cl)/(PtII...Cl), is 0.643.