Acta Crystallographica Section C

Crystal Structure Communications

Volume 69, Part 2 (February 2013)


metal-organic compounds



wq3023 scheme

Acta Cryst. (2013). C69, 146-149    [ doi:10.1107/S0108270113000541 ]

A one-dimensional platinum mixed-valence complex with bridging thiocyanate S atoms: [[PtII(en)2]([mu]-SCN)[PtIV(en)2]([mu]-SCN)](ClO4)4 (en is ethane-1,2-diamine)

Y. Ozawa, M. Kim and K. Toriumi

Abstract: A new one-dimensional platinum mixed-valence complex with nonhalogen bridging ligands, namely catena-poly[[[bis(ethane-1,2-diamine-[kappa]2N,N')platinum(II)]-[mu]-thiocyanato-[kappa]2S:S-[bis(ethane-1,2-diamine-[kappa]2N,N')platinum(IV)]-[mu]-thiocyanato-[kappa]2S:S] tetrakis(perchlorate)], {[Pt2(SCN)2(C2H8N2)4](ClO4)4}n, has been isolated. The PtII and PtIV atoms are located on centres of inversion and are stacked alternately, linked by the S atoms of the thiocyanate ligands, forming an infinite one-dimensional chain. The PtIV-S and PtII...S distances are 2.3933 (10) and 3.4705 (10) Å, respectively, and the PtIV-S...PtII angle is 171.97 (4)°. The introduction of nonhalogen atoms as bridging ligands in this complex extends the chemical modifications possible for controlling the amplitude of the charge-density wave (CDW) state in one-dimensional mixed-valence complexes. The structure of a discrete PtIV thiocyanate compound, bis(ethane-1,2-diamine-[kappa]2N,N')bis(thiocyanato-[kappa]S)platinum(IV) bis(perchlorate) 1.5-hydrate, [Pt(SCN)2(C4H8N2)2](ClO4)2·1.5H2O, has monoclinic (C2) symmetry. Two S-bound thiocyanate ligands are located in trans positions, with an S-Pt-S angle of 177.56 (3)°.

Formula: [Pt2(SCN)2(C2H8N2)4](ClO4)4 and [Pt(SCN)2(C4H8N2)2](ClO4)2·1.5H2O


hkldisplay filedownload file

Structure factor file (CIF format) (163.5 kbytes)
[ doi:10.1107/S0108270113000541/wq3023Isup2.hkl ]
Contains datablock I


hkldisplay filedownload file

Structure factor file (CIF format) (261.9 kbytes)
[ doi:10.1107/S0108270113000541/wq3023IIsup3.hkl ]
Contains datablock II


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