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  • 1
    Electronic Resource
    Electronic Resource
    Crystal structure of [Co(o-SC6H4NH2){P(OMe)3}3]PF6 (1998)
    Springer
    Journal of chemical crystallography 28 (1998), S. 635-638 
    Details
    ISSN: 1572-8854
    Keywords: Cobalt(II) ; 2-aminobenzenethiol ; trimethylphosphite ; crystal structure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract A cobalt-thiolato-phosphite complex [Co(o-SC6H4NH2){P(OMe)3}3]PF6 has been prepared and characterized by X-ray crystallography. The complex crystallizes in the triclinic space group $$P\bar 1$$ with a = 10.590(4), b = 11.122(3), c = 13.577(5) Å, α = 101.85(1), β = 108.50(1), γ = 101.75(1)°, V = 1420.6(8) Å3, and Z = 2. The structure comprises discrete [Co(o-SC6H4NH2){P(OMe)3}3]+ cations and PF 6 − anions where the metal atom is coordinated in a highly distorted square-pyramidal environment by one chelate o-SC6H4NH 2 − (abt) and two P(OMe)3 ligands in the basal positions, and a third P(OMe)3 in the axial site with Co–N,, 1.847(5), Co–S, 2.166(2), Co–P, 2.157(2), 2.147(2), and 2.125(2) Å.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1022417127336
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  • 2
    Electronic Resource
    Electronic Resource
    Synthesis, crystal structure and properties of square-planar acetato{[(4-methylimidazol-5-yl)methylene]histamine} copper(II) perchlorate (1999)
    Springer
    Journal of chemical crystallography 29 (1999), S. 409-412 
    Details
    ISSN: 1572-8854
    Keywords: copper(II) ; Schiff base ; polymidazole ; crystal structure ; properties
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract The square-planar complex [Cu(MIMH)(CH3CO2)](ClO4) (1) (MIMH = [(4-methylimidazol-5-yl)methylene]histamine) was prepared and structurally characterized. Complex 1 crystallizes in the monoclinic space group P21/n with a = 10.5331(10), b = 12.6177(10), c = 12.9773(10) Å, β = 107.710(10)°, V = 1643.0(2) Å3, and Z = 4. Single-crystal X-ray analysis reveals that the copper(II) atom in 1 has a distorted square-planar environment defined by three nitrogen atoms from the Schiff base ligand and one oxygen atom from the acetate group. The Cu—N bond lengths range from 1.950(3) to 2.015(3) Å and the Cu—O(1) bond length is 1.952(2) Å. The electronic spectra of 1 in aqueous solutions indicates that 1 forms adducts of square-pyramidal geometry with H2O. Cyclic voltammetry of 1 in DMF solution shows that there is some degradation of 1 upon reduction.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1009558826050
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  • 3
    Electronic Resource
    Electronic Resource
    Metal-betaine interactions. Part 17: A study of intradimer Cu · · · Cu distance variation in copper(II) betaine complexes containing [Cu2 (carboxylato-O,O′)4L2]n+ species (1993)
    Springer
    Structural chemistry 4 (1993), S. 247-259 
    Details
    ISSN: 1572-9001
    Keywords: Copper complexes ; X-ray crystallography ; intradimer Cu ⋯ Cu distance
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Four copper(II) complexes of betaines, [Cu2(BET)4Cl2][Cu(BET)2Cl2]Cl2 (2), [Cu2(pyBET)4Cl2]3[CuCl4]2Cl2 (3), [Cu, (pyBET)4 (H2O)2] (NO3)4 · 2H2O (4), and [Cu2(ppBET)4(H2O)2](ClO4)4 · 4H2O (5), (BET = Me3N+CH2COO−; pyBET = C5H5N+CH2COO−; ppBET=C5H5N+CH2CH2COO−), have been prepared and characterized by X-ray crystallography. These complexes all contain dimeric [Cu2 (carboxylato-O,O′)4L2] structures [basal Cu-O=1.955(4) ∼ 1.991(2), Cu ⋯ Cu=2.602(1) ∼ 2.759(1) Å] with the apical ligand L=Cl− in (2) and (3) [Cu-Cl=2.415(1) ∼ 2.436(3) Å] and L = H2O in (4) and (5) [Cu-OH2=2.158(4) ∼ 2.192(3) Å]; also present are a discrete [Cu(BET)2Cl2] molecule with a compressed tetrahedral CuO2Cl2 chromophore involving two unidentate carboxylate ligands [Cu-O=1.916(2), Cu-Cl=2.254(1) Å] in (2), and a discrete C3v [CuCl4]2− anion in (3). Generally the intradimer Cu ⋯ Cu distance may be correlated to the electronic repulsion of the metal-ligand bonds in the CuO4L chromophore, as well as the steric interaction between the carboxylate moieties and the apical ligand.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00673699
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