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1

Optical properties of Nd:YbVO4 crystal

Liu F Q, Sun S Q, Gao C Y, Xu J Q

Optica Applicata

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2015

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Vol. 45, nr 1

63—70

EN

Optical characteristics of a new laser crystal Nd:YbVO4 were studied. The optical parameters of a-cut and c-cut Nd:YbVO4 crystals were calculated by the Judd–Ofelt theory. The absorption crosssection of a-cut Nd:YbVO4 crystal was 5.34×10–20 cm2 at 808 nm, while it was 4.20×10–18 cm2 of c-cut Nd:YbVO4 crystal. The properties of energy transfer between Nd and Yb ions in Nd:YbVO4 crystal were discussed. In the fluorescence spectra, a peak at 472 nm appeared, which resulted from the coupling interaction between two Yb ions.

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Hydrothermal Synthesis, Structure Characterization of a New Mixed Mo/V Metal-Oxygen Cluster Compound: [Co(phen)3]2[HPMoV4 MoVI4V IV6 M2O44]×4H2O, (M = 0.78MoV + 0.22V IV)

Sun Y. H., Li X. P., Sun D. H., Niu L., Xu J. Q.

Polish Journal of Chemistry

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2007

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Vol. 81, nr 9

1567-1575

EN

A new polyoxometalat[Co(phen)3]2[HPMoV4 MoVI4V IV6 M2O44]×4H2O, (M = 0.78MoV + 0.22V IV)e 1 was hy dro ther mally syn the sized and char ac ter ized by IR, el e men tal anal y ses, X-ray pho to elec tron spec trum, ESR and sin gle crys tal X-ray dif frac tion. The ti tle com - pound is in the triclinic space group P1 with a = 12.0953(7) A, b = 14.0182(6) A, c = 14.6468(7) A, V = 2402.55(18) A3, a = 105.134(2), b = 91.841(3), g = 91.401(2), Z = 1, and R1 (wR2) = 0.0617 (0.1701). The compound was prepared from tetra-capped pseudo-Keggin with phosphorus-centered polyoxoanions [PMo8V6M2O44]5-, [Co(phen)3]2+ cations and linked through hydrogen bonds and p-p stacking inte action into three-dimensional supramolecular framework. A study of the magnetic properties of 1 demonstrates that it exhib its antiferromagnetic coupling interactions.

3

Synthesis, Crystal Structure and Magnetism of Vanadium(IV/V) Complex: K3[V2O3(nta)2]ź3H2O

Shi J. M., Xu J. Q., Yu W. T., Liu L. D., Wu C. J.

Polish Journal of Chemistry

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2001

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Vol. 75, nr 11

1695-1701

EN

The crystal of the titled vanadium(IV/V) complex K3[V2O3(nta)2]ź3H2O (nta denotes nitrilotriacetate) has been synthesized and its structure determined. The unit cell contains two different binuclear vanadium(IV/V) groups. The vanadium(IV/V) ions are coordinated by six atoms and each vanadium(IV/V) ion is located in the sphere of distorted octahedral coordination. In each dimer two vanadium ions are in exact equivalent sites and one free electron is shared equally between the two vanadium ions.

4

Synthesis and Structure of [Ni(en)2]2H{[Ni(en)2][MoV4 MoVI4 V IV8 O40(VVO4)]}x3H2O with 1-D Extended Heteronuclear Chains

Zeng Q. X., Xu J. Q., Yang G. Y., Cui X. B., Song Y. J., Zheng Z. D.

Polish Journal of Chemistry

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2001

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Vol. 75, nr 11

1791-1796

5

Hydrothermal Synthesis and Crystal Structure of Cu3I3(C12H8N2)2

Yu J. H., Shi Z., Xu J. Q., Chu D. Q., Jin W. J., Ding H., Hua J., Xu J. N., Cui X. B., Wang T. G., Zhang L. J., Li C. B.

Polish Journal of Chemistry

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2001

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Vol. 75, nr 11

1785-1789

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Synthesis and Magnetism of Cobalt(II) Complex with Two Dimensional Structure

Wu C. J., Xu J. Q., Shi J. M.

Polish Journal of Chemistry

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2000

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Vol. 74, nr 12

1789-1791