X-ray crystallographic, luminescence and NMR studies of phenacyldiphenylphosphine oxide with the Ln(III) ions Sm, Eu, Gd, Tb and Dy,Dalton Transactions

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X-ray crystallographic, luminescence and NMR studies of phenacyldiphenylphosphine oxide with the Ln(III) ions Sm, Eu, Gd, Tb and Dy
Dalton Transactions ( IF 3.5 ) Pub Date : 2017-10-31 00:00:00 , DOI: 10.1039/c7dt02678a
Erin G. Leach _{1,

2,

3,

4} , Justin R. Shady _{1,

2,

3,

4} , Adam C. Boyden _{1,

2,

3,

4} , Anne-lise Emig _{1,

2,

3,

4} , Alyssa T. Henry _{1,

4,

5,

6,

7} , Emily K. Connor _{1,

4,

5,

6,

7} , Richard J. Staples _{1,

4,

8,

9,

10} , Stephanie Schaertel _{1,

2,

3,

4} , Eric J. Werner _{1,

4,

5,

6,

7} , Shannon M. Biros _{1,

2,

3,

4}

Affiliation

We report here the characterization in solution (NMR, luminescence, MS) and the solid-state (X-ray crystallography, IR) of complexes between phenacyldiphenylphosphine oxide and five Ln(III) ions (Sm, Eu, Gd, Tb, Dy). Four single crystal X-ray structures are described here showing a 1 : 2 ratio between the Ln³⁺ ions Eu, Dy, Sm and Gd and the ligand, where the phosphine oxide ligands are bound in a monodentate manner to the metal center. A fifth structure is reported for the 1 : 2 Eu(NO₃)₃-ligand complex showing bidentate binding between the two ligands and the metal center. The solution coordination chemistry of these metal complexes was probed by ¹H, ¹³C and ³¹P NMR, mass spectrometry, and luminescence experiments. The title ligand has the capability to sensitize Tb³⁺, Dy³⁺, Eu³⁺ and Sm³⁺ leading to metal-centered emission in solutions of acetonitrile and methanol and in the solid state.

中文翻译：

苯甲酰二苯基氧化膦与Ln（III）离子Sm，Eu，Gd，Tb和Dy的X射线晶体学，发光和NMR研究

我们在这里报告了苯甲酰二苯基氧化膦与五个Ln（III）离子（Sm，Eu，Gd，Tb，Dy）之间的络合物在溶液中的表征（NMR，发光，MS）和固态（X射线晶体学，IR ）。此处描述了四个单晶X射线结构，显示Ln ³⁺离子Eu，Dy，Sm和Gd与配体之间的比例为1：2 ，其中氧化膦配体以单齿方式结合到金属中心。报道了1：2 Eu（NO ₃）_3-配体络合物的第五种结构，显示了两个配体和金属中心之间的二齿结合。这些金属配合物的溶液配位化学由¹ H，¹³ C和³¹探测P NMR，质谱和发光实验。标题配体具有敏化Tb ³⁺，Dy ³⁺，Eu ³⁺和Sm ^{3+的能力，}从而导致在乙腈和甲醇溶液中以及处于固态时以金属为中心的发射。

更新日期：2017-11-15

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