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| Titel: |
Synthesis, crystal structures and magnetism of lanthanide(III) binuclear complexes [Ln2(μ1,3-CH3CO2)2(SCN-)4L2(H2O)6] (Ln = Gd(III) and Eu(III), L = 4-methylpyridine N-oxide) |
| Auteur: |
Shi, J.-M. Liu, Z. Xu, H. K. Wu, C.-J. Liu, L.-D. |
| Verschenen in: |
Journal of coordination chemistry |
| Paginering: | Jaargang 60 (2007) nr. 15 pagina's 1637-1644 |
| Jaar: |
2007-08 |
| Inhoud: |
Two lanthanide(III) binuclear complexes have been synthesized with acetate as bridging ligand and 4-methylpyridine N-oxide (L), SCN- and H2O as terminal ligands and structurally determined by X-ray crystallography. Both crystals [Gd2(μ1,3-CH3CO2)2(SCN-)4(L)2(H2O6) (1) and [Eu2(μ1,3-CH3CO2)2(SCN-)4(L)2(H2O)6] (2) belong to monoclinic with space group P21/n. The relevant cell parameters are as follows: a = 9.0034(12) Å, b = 15.998(2) Å, c = 12.1277(17) Å, β = 100.625(2)° for complex 1; and a = 9.0168(18) Å, b = 15.990(3) Å, c = 12.142(2) Å, β = 100.734(3)° for complex 2; The two lanthanide(III) ions are bridged by two acetate anions forming a binuclear unit, in which L, SCN- and H2O as unidentate terminal ligands take part in the coordination. The variable-temperature magnetic susceptibility of 1 was measured in the 4-300 K range; fitting for the susceptibility data reveals that there is no magnetic interaction between the bridged Gd(III) ions. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 59 van 71 gevonden artikelen
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