The lanthanide nitrate complexes with 13-crown-4(13-C-4) have been prepared in AcOEt. These new complexes with the general formula Ln(NO
3)
3.(13-c-4) (Ln = La–Nd, Sm–Lu) have been characterized by means of elemental analysis, IR and
1H-NMR spectra, conductivity measurements, and TG-DTA techniques. The crystal and molecular structure of Nd(No
3)
3. (13-c-4) has been determined by single crystal X-ray diffraction. It crystallizes in the monoclinic space group
P2
1/a with Z = 8. Lattice parameters are a = 15.393(1), b = 12.578(1), c = 19.279(2) Å, β = 113.05(1)°, V = 3435 Å
3, D
c = 2.01 g cm
?3, μ = 31.0 cm
?1 (Mok
2), F(000) = 2056. The structure was solved by
Patterson and
Fourier techniques and refined by least-squares to a final conventional
R value of 0.032 for 5218 independent reflections with
I ? 3σ(I). There are two independent Nd(No
3)
3 · (13-C-4) monomers in one asymmetrical unit. The coordination numbers are ten in these two independent monomers.
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