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1Author    DietrichK. Breitinger, Roman BreiterRequires cookie*
 Abstract    ?ram-(NH4)2[R u (S 0 3)2(N H 3)4]-4 H 20 (1) (m onoclinic, P l x!n\ a = 629.8(3), b = 1000.6(2), c = 1345.7(5) pm, ß = 112.25(4)°, Z = 2; R = 0.021; R w = 0.017) is obtained as pale greenish-yellow crystals by reaction of /ra « s-[R u (S 0 3H)2(N H 3)4] (2) with aqueous ammonia, and crys­ tallization at +5 °C. The compound, when isolated, is stable at room temperature for only a few days even under inert gas, but persists under the mother liquor. In the centrosymmetric anion frö/?s-[Ru(S03)2(N H 3)4]2~ the bonds Ru-S = 230.5(1) pm are significantly longer than in the neutral complex 2 (227.6(1) pm), whereas the Ru-N bonds are the same in both com ­ plexes within experimental error (averages 214.1 and 214.0 pm). Hence, the mutual trans-influence of the sulfite ligands is weakened on protonation; the bonding of the co-ligands in c/s-position is not affected. The internal structure o f the sulfite ligand in 1 with long S-O bonds (average 151.2(5) pm) and small angles O-S-O (average 106.1(6)°) and the weakened Ru-S bond are a good match. The structure of 1 is held together by a complex network of hydrogen bonds, in which all potential hydrogen-bond donors (O H 2, N H 4+, N H 3) and accep­ tors (H 20 , S 0 3) are involved. The structural findings are reflected in the vibrational spectra. 
  Reference    Z. Naturforsch. 51b, 517 (1996); received August 25 1995 
  Published    1996 
  Keywords    Ruthenium(II) Sulfito Complex, Crystal Structure, m ws-Influence, Hydrogen Bonding 
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 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-0517.pdf 
 Identifier    ZNB-1996-51b-0517 
 Volume    51