Influence of outer-sphere anions in europium tetrahydrofuran-2-carboxylates on the Eu~(3+) luminescence center, analyzed by methods of X-ray diffraction and optical spectroscopy

Zhuravlev K.P.; Vologzhanina A.V.; Kudryashova V.A.; Klemenkova Z.S.; Tsaryuk V.I.

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Influence of outer-sphere anions in europium tetrahydrofuran-2-carboxylates on the Eu~(3+) luminescence center, analyzed by methods of X-ray diffraction and optical spectroscopy

机译：X射线衍射和光谱法分析四氢呋喃-2-羧酸euro中外球阴离子对Eu〜（3+）发光中心的影响

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Five new lanthanide tetrahydrofuran-2-carboxylate (THFC) complexes [Ln(THFC)_2(H_2O)_2]·L·H _2O (Ln = Eu; L = Cl~-, Br~-, NO_3 ~- and Ln = Tb; L = Cl~-, NO_3 ~-) have been synthesized. The crystal structures of four compounds were solved by the X-ray diffraction method. The Ln~(3+) ions are coordinated to eight oxygen atoms: six oxygen atoms are provided by two tridentate bridging-cyclic THFC ligands, and the other two by water molecules. The Ln~(3+) coordination polyhedron can be described as a distorted square antiprism. The structures consist of planar layers linked by hydrogen bonds through outer-sphere L anions and H_2O molecules. The influence of the L anion on the Eu~(3+) luminescence center is analyzed with the help of luminescence and IR vibrational spectroscopy. The distortions of the square antiprism increase with the size of the L outer-sphere anions. Consequently, the lowering of the symmetry of the crystal field around the Eu~(3+) ion appears as an extra splitting of the ~7F_J levels under the influence of the crystal field components of the second and fourth ranks.

机译：五个新的镧系元素四氢呋喃-2-羧酸酯（THFC）配合物[Ln（THFC）_2（H_2O）_2]·L·H _2O（Ln = Eu; L = Cl〜-，Br〜-，NO_3〜-和Ln = Tb ; L ＝ Cl〜-，NO_3〜-）已经合成。通过X射线衍射法解析了四种化合物的晶体结构。 Ln〜（3+）离子与八个氧原子配位：六个氧原子由两个三齿桥接环THFC配体提供，另外两个由水分子提供。 Ln〜（3+）配位多面体可以描述为扭曲的方形反棱镜。该结构由通过外球L阴离子和H_2O分子通过氢键连接的平面层组成。借助发光和红外振动光谱分析了L阴离子对Eu〜（3+）发光中心的影响。方形反棱镜的畸变随L个外球阴离子的大小而增加。因此，在第二和第四级的晶体场分量的影响下，Eu〜（3+）离子周围的晶体场对称性的降低表现为〜7F_J能级的额外分裂。

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《Polyhedron: The International Journal for Inorganic and Organometallic Chemistry》 |2013年第null期|共7页
作者
Zhuravlev K.P.; Vologzhanina A.V.; Kudryashova V.A.; Klemenkova Z.S.; Tsaryuk V.I.;
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正文语种 eng
中图分类无机化学;
关键词
Eu~(3+); IR spectra; Luminescence; Tb~(3+); Tetrahydrofuran-2-carboxylate; X-ray crystal structure;

机译：Eu〜（3 +）;IR光谱;发光;Tb〜（3+）;四氢呋喃-2-羧酸酯;X射线晶体结构;

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1. Influence of outer-sphere anions in europium tetrahydrofuran-2-carboxylates on the Eu~(3+) luminescence center, analyzed by methods of X-ray diffraction and optical spectroscopy [J] . Zhuravlev K.P., Vologzhanina A.V., Kudryashova V.A., Polyhedron: The International Journal for Inorganic and Organometallic Chemistry . 2013,第Null期

机译：X射线衍射和光谱法分析四氢呋喃-2-羧酸euro中外球阴离子对Eu〜（3+）发光中心的影响
2. Structures, luminescence and vibrational spectroscopy of europium and terbium nitro- and dinitro-substituted benzoates. Nitro groups as quenchers of Ln~(3+) luminescence [J] . V.Tsaryuk, V.Kudryashova, P.Gawryszewska Journal of Photochemistry and Photobiology, A. Chemistry . 2012,第Null期

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3. Variation of M center dot center dot center dot H-C Interactions in Square-Planar Complexes of Nickel(11), Palladium(II), and Platinum(II) Probed by Luminescence Spectroscopy and X-ray Diffraction at Variable Pressure [J] . Poirier Stephanie, Lynn Hudson, Reber Christian, Inorganic Chemistry: A Research Journal that Includes Bioinorganic, Catalytic, Organometallic, Solid-State, and Synthetic Chemistry and Reaction Dynamics . 2018,第13期

机译：通过在可变压力下通过发光光谱和X射线衍射探测的镍（11），钯（II）和铂（II）方形络合物中的M中心点中心点中心点H-C相互作用的变化
4. Optical absorption of Eu~(3+) and Eu~(2+) in europium oxides and europium fluorides [C] . V. F. Zinchenko, N. P. Efryushina, O. G. Eryomin Feofilov Symposium on Spectroscopy of Crystals Activated by Rare-Earth and Transition Metal Ions . 2002

机译：Eu〜（3+）和Eu〜（2+）的光学吸收氧化物和铕氟化物
5. Site selective spectroscopy of europium (3+) in the glass ceramic forming system sodium-monoxide - calcium-monoxide - aluminum-oxide - titanium-dioxide - silicon-dioxide. [D] . Belliveau, Thomas Frederick. 1988

机译：玻璃陶瓷成型体系中system（3+）的位点选择性光谱法-一氧化钠-一氧化钙-氧化铝-二氧化钛-二氧化硅。
6. Mössbauer spectroscopy of europium-containing glasses: Optical activator study for x-ray image plates [O] . C.E. Johnson, M. Vu, J.A. Johnson, -1

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7. Induced Optical Activity in Co(NH3)6(3+) and Co(en)3(3+) Upon Outer-Sphere Association with (+)-Tartarate2- and Other Chiral Anions. [O] . Bengt Nordén, S. J. Cyvin, Veikko Nurmikko, 1972

机译：在与（+） - 酒石酸盐2-和其他手性阴离子的外球关相关CO（NH3）6（3+）和CO（3+）中的CO（NH 3）6（3+）和CO（3+）的光学活性。

Influence of outer-sphere anions in europium tetrahydrofuran-2-carboxylates on the Eu~(3+) luminescence center, analyzed by methods of X-ray diffraction and optical spectroscopy

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