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  • International Union of Crystallography (IUCr)  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Aqua[N-(6-carboxylato-κO-pyridine-2-carbonyl-κN)-L-histidinato-κ2N,N′]copper(II) (2001)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 57 (2001), S. 1256-1258 
    Details
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: The title compound, [Cu(C13H10N4O5)(H2O)], is an asymmetric and pentacoordinated square-pyramidal copper(II) complex, with a water molecule occupying an apical position. It consists of syn and anti isomers of the apical water molecule with respect to the metal-free carboxyl group on the equatorial ligand. The crystal structure of this complex is a rare example of conformational isomerization, in which the two isomers cocrystallize in a 1:3 ratio of syn to anti molecules in the same lattice.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108270101012331
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  • 2
    Electronic Resource
    Electronic Resource
    A novel trinuclear palladium cluster compound: di-μ3-chloro-tris[chloro(triphenylphosphine-P)palladium] acetone solvate (2000)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 56 (2000), S. 414-415 
    Details
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: The title triangular tripalladium cluster, [Pd3Cl5(C18H15P)3]·C3H6O, (I), has a trigonal-bipyramidal framework of Pd3(μ3-Cl)2, with the two Cl atoms in apical positions. Each Pd atom in the framework has two additional coordination sites to establish square-planar cis-PdL2(μ3-Cl)2 geometry. Three P atoms are located on the same side of the plane defined by the Pd3 triangle, which leads to a pseudo-C3v symmetry for the core framework of Pd3(μ3-Cl)2P3Cl3. The average Pd—Cl distance trans to PPh3 is 2.473 (8) Å, which is significantly longer than the average Pd—Cl distance of 2.294 (4) Å for those trans to terminal Cl, due to the strong trans effect of a P atom compared with a Cl atom. Compound (I) has 49 valence electrons and shows a rhombic electron-spin resonance signal, indicating an S = ½ ground state.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108270199016509
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