Abstract
The structures of trans-[(MeCN)2(bpy)2Ru](ClO4)2(I) andtrans-[(NH3)2(bpy)2Ru](ClO4)2(II) have been determined by single crystal X-ray diffraction methods. (I) forms monoclinic crystals in the space groupP21/c witha=8.399(2),b=10.406(2),c=15.590(3) Å,β=93.78(2)° andZ=2 atT=293 K. The final refinement gaveR=0.040 for 2448 reflections withF 2 o >3σ(F 2 o ). (II) crystallizes in the triclinic space groupP¯1 witha=1.702(1),b=8.439(2),c=10.525(2) Å,α=107.56(2),β=104.63(1), γ=100.89(2)° andZ=1 atT=293 K. Refinement using 1878 reflections withF 2 o >3σ(F 2 o ) produced a finalR value of 0.036. Both of these structures have the ruthenium atom located on a crystallographic inversion center. The bipyridine ligands in both structures are in the bowed conformation as a means of circumventing the steric problems associated with the trans arrangement of the bipyridine ligands. The Ru-N(monodentate) distance is longer for the ammonia complex (2.106(3) Å) than for the acetonitrile complex (2.008(4) Å); there are no significant differences in the distances and angles of the two Ru(bpy)2 frameworks.
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Cordes, A.W., Durham, B., Pennington, W.T. et al. Crystal and molecular structures of trans-bis(acetonitrile)bis(bipyridine)ruthenium(II) perchlorate and trans-diamminebis(bipyridine)ruthenium(II) perchlorate. Journal of Crystallographic and Spectroscopic Research 22, 699–704 (1992). https://doi.org/10.1007/BF01160989
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DOI: https://doi.org/10.1007/BF01160989