179752-18-2Relevant academic research and scientific papers
Synthesis and structure of didysprosium complexes with a tetraketone
Yang, Luqin,Yang, Rudong
, p. 75 - 84 (1996)
Two novel didysprosium (Dy2) complexes of 1,5-bis(1′-phenyl-3′-methyl-5′-pyrazolone-4′)-l,5- pentanedione (H2L), Dy2L3·2H2O and Dy2L3·5DMF (DMF = dimethylformamide), have been synthesized. The crystal structure of Dy2L3·5DMF was determined by X-ray diffraction. Crystals are triclinic, space group P1, with a = 16.99(1), A = 17.970(9), c = 18.28(1) A, α = 110.36(4), β = 101.47(6), γ = 111.11(5)°, V = 4533(9) A3, Mr =2017.91, Z = 2, Dx = 1.48 g cm-3, μ, = 17.22 cm-1, F(000) = 2056, R =0.074 with 3804 reflections used in the refinement. In the complex, each L bonds two dysprosium atoms with its two β-diketone groups. Two DMF solvent molecules bond to each dysprosium ion. The coordination number of the two dysprosium ions is eight. The eight oxygen atoms around the dysprosium ion make up a distorted square antiprism coordination polyhedron. The resonance structures of coordinated β-diketonates are also discussed. Different lanthanide ions may stabilize the specific structure.
